Added comments

modified:   ProfileAdapter.java
 modified:   TimeLineAdapter.java

app/MyHyvesBookPlusStagram/app/src/main/AndroidManifest.xml

@@ -26,6 +26,7 @@
 
 
         <activity
+            android:screenOrientation="portrait"
             android:name=".MainActivity"
             android:label="@string/app_name">
             <intent-filter>
@@ -34,7 +35,9 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
-        <activity android:name=".LoginActivity">
+        <activity
+            android:screenOrientation="portrait"
+            android:name=".LoginActivity">
 
         </activity>
     </application>

app/MyHyvesBookPlusStagram/app/src/main/java/nl/myhyvesbookplus/tagram/CameraFragment.java

@@ -1,13 +1,10 @@
 package nl.myhyvesbookplus.tagram;
 
 import android.app.Activity;
-import android.content.Context;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.hardware.Camera;
 import android.hardware.Camera.PictureCallback;
-import android.media.Image;
-import android.net.Uri;
 import android.os.Bundle;
 import android.app.Fragment;
 import android.support.design.widget.FloatingActionButton;
@@ -19,91 +16,50 @@ import android.view.ViewGroup;
 import android.view.inputmethod.InputMethodManager;
 import android.widget.EditText;
 import android.widget.ImageButton;
+import android.widget.LinearLayout;
 import android.widget.RelativeLayout;
 
 import nl.myhyvesbookplus.tagram.controller.PostUploader;
 import nl.myhyvesbookplus.tagram.model.BitmapPost;
 
-/**
- * A simple {@link Fragment} subclass.
- * Activities that contain this fragment must implement the
- * {@link CameraFragment.OnFragmentInteractionListener} interface
- * to handle interaction events.
- * Use the {@link CameraFragment#newInstance} factory method to
- * create an instance of this fragment.
- */
 public class CameraFragment extends Fragment implements PostUploader.PostUploadListener{
-    // TODO: Rename parameter arguments, choose names that match
     private static final String TAG = "CameraFragment";
-    // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
-    private static final String ARG_PARAM1 = "param1";
-    private static final String ARG_PARAM2 = "param2";
-
-    // TODO: Rename and change types of parameters
-    private String mParam1;
-    private String mParam2;
-
-    private OnFragmentInteractionListener mListener;
-
     private Camera mCamera;
     private CameraPreview mPreview;
     private Bitmap mPhoto;
     private int facing = Camera.CameraInfo.CAMERA_FACING_BACK;
 
-    public CameraFragment() {
+    /* Required empty public constructor */
-        // Required empty public constructor
+    public CameraFragment() { }
-    }
-
-    /**
-     * Use this factory method to create a new instance of
-     * this fragment using the provided parameters.
-     *
-     * @param param1 Parameter 1.
-     * @param param2 Parameter 2.
-     * @return A new instance of fragment CameraFragment.
-     */
-    // TODO: Rename and change types and number of parameters
-    public static CameraFragment newInstance(String param1, String param2) {
-        CameraFragment fragment = new CameraFragment();
-        Bundle args = new Bundle();
-        args.putString(ARG_PARAM1, param1);
-        args.putString(ARG_PARAM2, param2);
-        fragment.setArguments(args);
-        return fragment;
-    }
-
-    @Override
-    public void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        if (getArguments() != null) {
-            mParam1 = getArguments().getString(ARG_PARAM1);
-            mParam2 = getArguments().getString(ARG_PARAM2);
-        }
-    }
 
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
                              Bundle savedInstanceState) {
         // Inflate the layout for this fragment
-        ((AppCompatActivity)getActivity()).getSupportActionBar().hide();
-        getActivity().findViewById(R.id.content).setPadding(0,0,0,0);
-
         final View view = inflater.inflate(R.layout.fragment_camera, container, false);
 
+        final RelativeLayout filterButtons = (RelativeLayout) view.findViewById(R.id.filter_buttons);
+        final RelativeLayout mCameraLayout = (RelativeLayout) view.findViewById(R.id.camera_preview);
+        final LinearLayout commentBox = (LinearLayout) view.findViewById(R.id.comment_box);
+        final ImageButton pictureButton = (ImageButton) view.findViewById(R.id.picture_button);
+        final ImageButton switchButton = (ImageButton) view.findViewById(R.id.switch_camera_button);
+
+        // Hide the action bar
+        ((AppCompatActivity)getActivity()).getSupportActionBar().hide();
+
         mCamera = getCameraInstance(facing);
 
         mPreview = new CameraPreview(getActivity().getBaseContext(), mCamera);
-        final RelativeLayout filterButtons = (RelativeLayout) view.findViewById(R.id.filter_buttons);
-        final RelativeLayout mCameraLayout = (RelativeLayout) view.findViewById(R.id.camera_preview);
 
         mCameraLayout.addView(mPreview);
 
-        // Draw buttons over preview
+        // Draw initial buttons over preview
-        view.findViewById(R.id.picture_button).bringToFront();
+        pictureButton.bringToFront();
-        view.findViewById(R.id.switch_camera_button).bringToFront();
+        switchButton.bringToFront();
         filterButtons.bringToFront();
 
-        (view.findViewById(R.id.switch_camera_button)).setOnClickListener(new View.OnClickListener() {
+        /* Upon pressing the switch camera facing button: */
+        switchButton.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
                 switchFacing();
@@ -114,12 +70,13 @@ public class CameraFragment extends Fragment implements PostUploader.PostUploadL
                 mPreview = new CameraPreview(getActivity().getBaseContext(), mCamera);
                 mCameraLayout.addView(mPreview);
 
-                view.findViewById(R.id.picture_button).bringToFront();
+                pictureButton.bringToFront();
-                view.findViewById(R.id.switch_camera_button).bringToFront();
+                switchButton.bringToFront();
             }
         });
 
-        (view.findViewById(R.id.picture_button)).setOnClickListener(new View.OnClickListener() {
+         /* Upon pressing the take photo button: */
+        pictureButton.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
                 mCamera.takePicture(null, null, new PictureCallback() {
@@ -141,17 +98,19 @@ public class CameraFragment extends Fragment implements PostUploader.PostUploadL
             }
         });
 
+        /* Upon pressing the upload button: */
         (view.findViewById(R.id.upload_button)).setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
-                view.findViewById(R.id.comment_box).setClickable(true);
+                commentBox.setClickable(true);
-                view.findViewById(R.id.comment_box).setVisibility(View.VISIBLE);
+                commentBox.setVisibility(View.VISIBLE);
-                view.findViewById(R.id.comment_box).bringToFront();
+                commentBox.bringToFront();
-                view.findViewById(R.id.filter_buttons).setVisibility(View.GONE);
+                filterButtons.setVisibility(View.GONE);
                 ((FloatingActionButton)view.findViewById(R.id.upload_button)).hide();
             }
         });
 
+        /* Upon pressing the enter button on the virtual keyboard: */
         (view.findViewById(R.id.comment_submit)).setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
@@ -175,13 +134,15 @@ public class CameraFragment extends Fragment implements PostUploader.PostUploadL
                 mPreview = new CameraPreview(getActivity().getBaseContext(), mCamera);
                 mCameraLayout.addView(mPreview);
 
-                view.findViewById(R.id.picture_button).bringToFront();
+                pictureButton.bringToFront();
-                view.findViewById(R.id.switch_camera_button).bringToFront();
+                switchButton.bringToFront();
 
                 mCameraLayout.removeView(view.findViewById(R.id.pic_preview));
+                hideKeyboard();
             }
         });
 
+        /* Upon pressing the cancel button: */
         (view.findViewById(R.id.comment_cancel)).setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
@@ -199,13 +160,15 @@ public class CameraFragment extends Fragment implements PostUploader.PostUploadL
                 mPreview = new CameraPreview(getActivity().getBaseContext(), mCamera);
                 mCameraLayout.addView(mPreview);
 
-                view.findViewById(R.id.picture_button).bringToFront();
+                pictureButton.bringToFront();
-                view.findViewById(R.id.switch_camera_button).bringToFront();
+                switchButton.bringToFront();
 
                 mCameraLayout.removeView(view.findViewById(R.id.pic_preview));
+                hideKeyboard();
             }
         });
 
+        /* Upon pressing the left arrow filter change button: */
         (view.findViewById(R.id.filter_left)).setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
@@ -224,6 +187,7 @@ public class CameraFragment extends Fragment implements PostUploader.PostUploadL
             }
         });
 
+        /* Upon pressing the right arrow filter change button: */
         (view.findViewById(R.id.filter_right)).setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
@@ -242,58 +206,31 @@ public class CameraFragment extends Fragment implements PostUploader.PostUploadL
             }
         });
 
-        (view.findViewById(R.id.comment_text)).setOnFocusChangeListener(new View.OnFocusChangeListener() {
-            @Override
-            public void onFocusChange(View v, boolean hasFocus) {
-                if (!hasFocus) {
-                    hideKeyboard(v);
-                }
-            }
-        });
-
         return view;
     }
 
-    public void hideKeyboard(View view) {
+    /**
-        InputMethodManager inputMethodManager =(InputMethodManager) getActivity().getSystemService(Activity.INPUT_METHOD_SERVICE);
+     * Hides keyboard after submit, upload or cancel button gets pressed.
-        inputMethodManager.hideSoftInputFromWindow(view.getWindowToken(), 0);
+     */
-    }
+    public void hideKeyboard() {
-
+        ((InputMethodManager) getActivity().getSystemService(Activity.INPUT_METHOD_SERVICE))
-    // TODO: Rename method, update argument and hook method into UI event
+                .toggleSoftInput(InputMethodManager.SHOW_IMPLICIT, 0);
-    public void onButtonPressed(Uri uri) {
-        if (mListener != null) {
-            mListener.onFragmentInteraction(uri);
-        }
-    }
-
-    @Override
-    public void onAttach(Context context) {
-        super.onAttach(context);
-        if (context instanceof OnFragmentInteractionListener) {
-            mListener = (OnFragmentInteractionListener) context;
-        } else {
-            throw new RuntimeException(context.toString()
-                    + " must implement OnFragmentInteractionListener");
-        }
-    }
-
-    @Override
-    public void onDetach() {
-        super.onDetach();
-        mListener = null;
     }
 
+    /**
+     * Restores the action bar when exiting the fragment.
+     */
     @Override
     public void onDestroyView() {
         super.onDestroyView();
-
-        int padding = 16;
-        float scale = getResources().getDisplayMetrics().density;
-        int dp = (int) (padding * scale + 0.5f);
         ((AppCompatActivity)getActivity()).getSupportActionBar().show();
-        getActivity().findViewById(R.id.content).setPadding(dp,dp,dp,dp);
     }
 
+    /**
+     * Start the camera.
+     * @param facing The direction in which the camera should be initialized (back by default).
+     * @return the result of the opened camera, if successful.
+     */
     public static Camera getCameraInstance(int facing) {
         Camera c = null;
         try {
@@ -304,13 +241,21 @@ public class CameraFragment extends Fragment implements PostUploader.PostUploadL
         return c;
     }
 
+
+    /**
+     * Switch between front facing camera and the back camera.
+     */
     public void switchFacing() {
-        if (facing == Camera.CameraInfo.CAMERA_FACING_FRONT)
+       facing = facing == Camera.CameraInfo.CAMERA_FACING_FRONT ?
-            facing = Camera.CameraInfo.CAMERA_FACING_BACK;
+       Camera.CameraInfo.CAMERA_FACING_BACK :
-        else
+       Camera.CameraInfo.CAMERA_FACING_FRONT;
-            facing = Camera.CameraInfo.CAMERA_FACING_FRONT;
     }
 
+    /**
+     * Change which buttons are visible during the different stages on the camera fragment.
+     *
+     * @param view The current view upon which the buttons need to be placed or removed.
+     */
     public void switchButtons(View view) {
         FloatingActionButton upload = (FloatingActionButton) view.findViewById(R.id.upload_button);
         ImageButton picButton = (ImageButton) view.findViewById(R.id.picture_button);
@@ -335,34 +280,8 @@ public class CameraFragment extends Fragment implements PostUploader.PostUploadL
         }
     }
 
-    @Override
-    public void onPause() {
-        super.onPause();
-    }
-
-    @Override
-    public void onResume() {
-        super.onResume();
-    }
-
     @Override
     public void PostUploadComplete(Boolean success) {
 
     }
-
-    /**
-     * This interface must be implemented by activities that contain this
-     * fragment to allow an interaction in this fragment to be communicated
-     * to the activity and potentially other fragments contained in that
-     * activity.
-     * <p>
-     * See the Android Training lesson <a href=
-     * "http://developer.android.com/training/basics/fragments/communicating.html"
-     * >Communicating with Other Fragments</a> for more information.
-     */
-    public interface OnFragmentInteractionListener {
-        // TODO: Update argument type and name
-        void onFragmentInteraction(Uri uri);
-    }
-
 }

app/MyHyvesBookPlusStagram/app/src/main/java/nl/myhyvesbookplus/tagram/LoginActivity.java

@@ -181,7 +181,7 @@ public class LoginActivity extends AppCompatActivity implements View.OnClickList
      * @param passwordString the entered password
      */
     protected void logIn(String emailString, String passwordString) {
-        progressDialog = ProgressDialog.show(LoginActivity.this, getString(R.string.please_wait), "Logging in", true, false);
+        progressDialog = ProgressDialog.show(LoginActivity.this, getString(R.string.please_wait), getString(R.string.logging_in), true, false);
 
         mAuth.signInWithEmailAndPassword(emailString, passwordString)
                 .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
@@ -211,7 +211,7 @@ public class LoginActivity extends AppCompatActivity implements View.OnClickList
      * @param password the entered password
      */
     protected void registerUser(String email, String password) {
-        this.progressDialog = ProgressDialog.show(LoginActivity.this, getString(R.string.please_wait), "Registering", true, false);
+        this.progressDialog = ProgressDialog.show(LoginActivity.this, getString(R.string.please_wait), getString(R.string.registering), true, false);
         mAuth.createUserWithEmailAndPassword(email, password)
                 .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
                     @Override

app/MyHyvesBookPlusStagram/app/src/main/java/nl/myhyvesbookplus/tagram/MainActivity.java

@@ -20,9 +20,10 @@ import nl.myhyvesbookplus.tagram.controller.PostUploader;
 import nl.myhyvesbookplus.tagram.controller.ProfilePictureUploader;
 
 public class MainActivity extends AppCompatActivity implements
-        CameraFragment.OnFragmentInteractionListener,
         ProfilePictureUploader.ProfilePictureUpdatedListener,
-        DownloadClass.PostDownloadListener, PostUploader.PostUploadListener {
+        DownloadClass.PostDownloadListener,
+        PostUploader.PostUploadListener {
+
     final static private String TAG = "MainScreen";
 
     FirebaseAuth mAuth;
@@ -89,11 +90,6 @@ public class MainActivity extends AppCompatActivity implements
         finish();
     }
 
-    @Override
-    public void onFragmentInteraction(Uri uri) {
-
-    }
-
     public void logOutOnClick(View view) {
         FirebaseAuth.getInstance().signOut();
         goToLogin();
@@ -107,7 +103,6 @@ public class MainActivity extends AppCompatActivity implements
 
     @Override
     public void ProfilePictureUpdated(Boolean success) {
-        Log.d(TAG, "ProfilePictureUpdated: Ja ik luister naar je!");
         FragmentManager man = getFragmentManager();
         ProfileFragment frag = (ProfileFragment) man.findFragmentById(R.id.content);
         FragmentTransaction transaction = man.beginTransaction();
@@ -122,11 +117,13 @@ public class MainActivity extends AppCompatActivity implements
     public void PostDownloaded() {
         FragmentManager fragmentManager = getFragmentManager();
         Fragment frag = fragmentManager.findFragmentById(R.id.content);
-        Log.d(TAG, "PostDownloaded: " + R.id.content);
+
+
 
         if (frag instanceof ProfileFragment) {
             ((ProfileFragment) frag).startList();
         } else if (frag instanceof  TimelineFragment) {
+//            ((TimelineFragment) frag).progressDialog.dismiss();
             ((TimelineFragment) frag).startList();
         }
     }

app/MyHyvesBookPlusStagram/app/src/main/java/nl/myhyvesbookplus/tagram/PicturePreview.java

@@ -73,6 +73,7 @@ public class PicturePreview extends SurfaceView implements SurfaceHolder.Callbac
 
                 filter = new ColorMatrixColorFilter(cm);
                 paint.setColorFilter(filter);
+                saveCanvas.setBitmap(filterPicture);
                 saveCanvas.drawBitmap(rotate(picture, rotate), 0, 0, paint);
                 canvas.drawBitmap(rotate(picture, rotate), 0, 0, paint);
                 break;

app/MyHyvesBookPlusStagram/app/src/main/java/nl/myhyvesbookplus/tagram/ProfileAdapter.java

@@ -1,15 +1,19 @@
 package nl.myhyvesbookplus.tagram;
 
 import android.content.Context;
+import android.graphics.Point;
+import android.graphics.Rect;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
+import android.view.animation.DecelerateInterpolator;
 import android.widget.BaseAdapter;
-import android.widget.Button;
-import android.widget.ImageButton;
 import android.widget.ImageView;
-import android.widget.ListView;
 import android.widget.TextView;
+import android.animation.Animator;
+import android.animation.AnimatorListenerAdapter;
+import android.animation.AnimatorSet;
+import android.animation.ObjectAnimator;
 
 import com.bumptech.glide.Glide;
 import com.firebase.ui.storage.images.FirebaseImageLoader;
@@ -21,12 +25,10 @@ import java.util.ArrayList;
 import nl.myhyvesbookplus.tagram.model.UriPost;
 
 /**
- * Created by niels on 27-6-17.
+ * Class which creates views for the profile-page timeline. This is done with a ListView.
  */
 
 public class ProfileAdapter extends BaseAdapter {
-
-    private static final String TAG = "ProfileAdapter";
     private LayoutInflater mInflater;
     private Context mContext;
     private ArrayList<UriPost> mData;
@@ -34,6 +36,10 @@ public class ProfileAdapter extends BaseAdapter {
     private TextView nietSlechts;
     private ImageView photo;
 
+    /* Hold a reference to the current animator, so that it can be canceled mid-way. */
+    private Animator mCurrentAnimator;
+
+    /* ProfileAdapter constructor */
     ProfileAdapter(Context context, ArrayList<UriPost> data) {
         mContext = context;
         mInflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
@@ -55,25 +61,181 @@ public class ProfileAdapter extends BaseAdapter {
         return position;
     }
 
+    /**
+     *  Initiate a new view to be part of the ListView.
+     * @param position The position at which the view should start.
+     * @param convertView The viewconverter.
+     * @param parent The parent of the view.
+     * @return
+     */
     @Override
     public View getView(int position, View convertView, ViewGroup parent) {
         View rowView = mInflater.inflate(R.layout.list_item_timeline_profile, parent, false);
         View newRowView = findViews(rowView);
         UriPost post = (UriPost) getItem(position);
         comment.setText(post.getComment());
-        StorageReference ref = FirebaseStorage.getInstance().getReferenceFromUrl(post.getUri());
+        final StorageReference ref = FirebaseStorage.getInstance().getReferenceFromUrl(post.getUri());
         Glide.with(mContext)
                 .using(new FirebaseImageLoader())
                 .load(ref)
                 .into(photo);
 
+        photo.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                zoomImageFromThumb(photo, ref);
+            }
+        });
+
         return newRowView;
     }
 
-    protected View findViews(View rowView) {
+    /**
+     * Find all views from within the row.
+     * @param rowView The row from which views must be found.
+     * @return The rowView which contains the necessary views.
+     */
+    private View findViews(View rowView) {
         comment = (TextView) rowView.findViewById(R.id.comment_timeline_profile);
         nietSlechts = (TextView) rowView.findViewById(R.id.niet_slecht_count_profile);
         photo = (ImageView) rowView.findViewById(R.id.timeline_image_profile);
         return rowView;
     }
+
+    /**
+     * https://developer.android.com/training/animation/zoom.html
+     * "Zooms" in a thumbnail view by assigning the high resolution image to a hidden "zoomed-in"
+     * image view and animating its bounds to fit the entire activity content area.
+     *
+     * @param thumbView  The thumbnail view to zoom in.
+     * @param imageRef The high-resolution version of the image represented by the thumbnail.
+     */
+    private void zoomImageFromThumb(final View thumbView, StorageReference imageRef) {
+        // If there's an animation in progress, cancel it immediately and proceed with this one.
+        if (mCurrentAnimator != null) {
+            mCurrentAnimator.cancel();
+        }
+
+        // Load the high-resolution "zoomed-in" image.
+        final ImageView hiddenView = (ImageView) ((MainActivity) mContext).findViewById(R.id.expanded_image_profile);
+
+        Glide.with(mContext)
+                .using(new FirebaseImageLoader())
+                .load(imageRef)
+                .into(hiddenView);
+
+        // Calculate the starting and ending bounds for the zoomed-in image. This step
+        // involves lots of math. Yay, math.
+        final Rect startBounds = new Rect();
+        final Rect finalBounds = new Rect();
+        final Point globalOffset = new Point();
+
+        // The start bounds are the global visible rectangle of the thumbnail, and the
+        // final bounds are the global visible rectangle of the container view. Also
+        // set the container view's offset as the origin for the bounds, since that's
+        // the origin for the positioning animation properties (X, Y).
+        thumbView.getGlobalVisibleRect(startBounds);
+        ((MainActivity) mContext).findViewById(R.id.relative_layout_timeline_profile).getGlobalVisibleRect(finalBounds, globalOffset);
+        startBounds.offset(-globalOffset.x, -globalOffset.y);
+        finalBounds.offset(-globalOffset.x, -globalOffset.y);
+
+        // Adjust the start bounds to be the same aspect ratio as the final bounds using the
+        // "center crop" technique. This prevents undesirable stretching during the animation.
+        // Also calculate the start scaling factor (the end scaling factor is always 1.0).
+        float startScale;
+        if ((float) finalBounds.width() / finalBounds.height()
+                > (float) startBounds.width() / startBounds.height()) {
+            // Extend start bounds horizontally
+            startScale = (float) startBounds.height() / finalBounds.height();
+            float startWidth = startScale * finalBounds.width();
+            float deltaWidth = (startWidth - startBounds.width()) / 2;
+            startBounds.left -= deltaWidth;
+            startBounds.right += deltaWidth;
+        } else {
+            // Extend start bounds vertically
+            startScale = (float) startBounds.width() / finalBounds.width();
+            float startHeight = startScale * finalBounds.height();
+            float deltaHeight = (startHeight - startBounds.height()) / 2;
+            startBounds.top -= deltaHeight;
+            startBounds.bottom += deltaHeight;
+        }
+
+        // Hide the thumbnail and show the zoomed-in view. When the animation begins,
+        // it will position the zoomed-in view in the place of the thumbnail.
+        thumbView.setAlpha(0f);
+        hiddenView.setVisibility(View.VISIBLE);
+
+        // Set the pivot point for SCALE_X and SCALE_Y transformations to the top-left corner of
+        // the zoomed-in view (the default is the center of the view).
+        hiddenView.setPivotX(0f);
+        hiddenView.setPivotY(0f);
+
+        // Construct and run the parallel animation of the four translation and scale properties
+        // (X, Y, SCALE_X, and SCALE_Y).
+        AnimatorSet set = new AnimatorSet();
+        set
+                .play(ObjectAnimator.ofFloat(hiddenView, View.X, startBounds.left,
+                        finalBounds.left))
+                .with(ObjectAnimator.ofFloat(hiddenView, View.Y, startBounds.top,
+                        finalBounds.top))
+                .with(ObjectAnimator.ofFloat(hiddenView, View.SCALE_X, startScale, 1f))
+                .with(ObjectAnimator.ofFloat(hiddenView, View.SCALE_Y, startScale, 1f));
+        set.setDuration(200);
+        set.setInterpolator(new DecelerateInterpolator());
+        set.addListener(new AnimatorListenerAdapter() {
+            @Override
+            public void onAnimationEnd(Animator animation) {
+                mCurrentAnimator = null;
+            }
+
+            @Override
+            public void onAnimationCancel(Animator animation) {
+                mCurrentAnimator = null;
+            }
+        });
+        set.start();
+        mCurrentAnimator = set;
+
+        // Upon clicking the zoomed-in image, it should zoom back down to the original bounds
+        // and show the thumbnail instead of the expanded image.
+        final float startScaleFinal = startScale;
+        hiddenView.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                if (mCurrentAnimator != null) {
+                    mCurrentAnimator.cancel();
+                }
+
+                // Animate the four positioning/sizing properties in parallel, back to their
+                // original values.
+                AnimatorSet set = new AnimatorSet();
+                set
+                        .play(ObjectAnimator.ofFloat(hiddenView, View.X, startBounds.left))
+                        .with(ObjectAnimator.ofFloat(hiddenView, View.Y, startBounds.top))
+                        .with(ObjectAnimator
+                                .ofFloat(hiddenView, View.SCALE_X, startScaleFinal))
+                        .with(ObjectAnimator
+                                .ofFloat(hiddenView, View.SCALE_Y, startScaleFinal));
+                set.setDuration(200);
+                set.setInterpolator(new DecelerateInterpolator());
+                set.addListener(new AnimatorListenerAdapter() {
+                    @Override
+                    public void onAnimationEnd(Animator animation) {
+                        thumbView.setAlpha(1f);
+                        hiddenView.setVisibility(View.GONE);
+                        mCurrentAnimator = null;
+                    }
+
+                    @Override
+                    public void onAnimationCancel(Animator animation) {
+                        thumbView.setAlpha(1f);
+                        hiddenView.setVisibility(View.GONE);
+                        mCurrentAnimator = null;
+                    }
+                });
+                set.start();
+                mCurrentAnimator = set;
+            }
+        });
+    }
 }

app/MyHyvesBookPlusStagram/app/src/main/java/nl/myhyvesbookplus/tagram/ProfileFragment.java

@@ -9,7 +9,6 @@ import android.os.Environment;
 import android.provider.MediaStore;
 import android.support.annotation.NonNull;
 import android.support.v4.content.FileProvider;
-import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
@@ -17,6 +16,7 @@ import android.widget.Button;
 import android.widget.ImageButton;
 import android.widget.ImageView;
 import android.widget.ListView;
+import android.widget.ProgressBar;
 import android.widget.TextView;
 import android.widget.Toast;
 import com.bumptech.glide.Glide;
@@ -36,43 +36,63 @@ import nl.myhyvesbookplus.tagram.controller.ProfilePictureUploader;
 
 import static android.app.Activity.RESULT_OK;
 
+/**
+ * Profilefragment which holds the personal info of the user.
+ * Makes use of ProfileAdapter in order to load in the items for ListView.
+ */
+
 public class ProfileFragment extends Fragment implements View.OnClickListener {
     static final int REQUEST_TAKE_PHOTO = 1;
+    ProgressDialog progressDialog;
 
-    /// Views, buttons and other protected declarations ///
+    /* Views, buttons and other protected and private inits */
     protected Button changePwdButton;
     protected ImageButton profilePicButton;
     protected StorageReference httpsReference;
     protected TextView profileName;
     protected ImageView profilePicture;
     protected FirebaseUser user;
-    protected File photoFile = null;
+    protected File photoFile;
+
     private ListView listView;
     private DownloadClass downloadClass;
+    private View headerInflater;
+    private View timeLineInflater;
+    private ProgressBar progressBar;
 
-    ProgressDialog progressDialog;
+    /* Required empty public constructor */
-
-    /// Required empty public constructor ///
-
     public ProfileFragment() {}
 
+    /**
+     * Overridden onCreate which initializes a user and sets the default photoFile to null.
+     * @param savedInstanceState The standard return of the onCreate method.
+     */
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         user = FirebaseAuth.getInstance().getCurrentUser();
+        photoFile = null;
      }
 
     /**
-     * Assigns all views and buttons.
+     * Assigns all views and buttons for the header.
      */
-    protected void findViews(View view) {
+    protected void findHeaderViews() {
-        profilePicButton = (ImageButton) view.findViewById(R.id.profile_pic_button);
+        profilePicButton = (ImageButton) headerInflater.findViewById(R.id.profile_pic_button);
-        profilePicture = (ImageView) view.findViewById(R.id.imageView_profile_picture);
+        profilePicture = (ImageView) headerInflater.findViewById(R.id.imageView_profile_picture);
-        profileName = (TextView) view.findViewById(R.id.profile_name);
+        profileName = (TextView) headerInflater.findViewById(R.id.profile_name);
-        changePwdButton = (Button) view.findViewById(R.id.change_psw_button);
+        changePwdButton = (Button) headerInflater.findViewById(R.id.change_psw_button);
         bindOnClick();
     }
 
+    /**
+     * Assign the ListView and add the header to it.
+     */
+    protected void findTimelineViews() {
+        listView = (ListView) timeLineInflater.findViewById(R.id.list);
+        listView.addHeaderView(headerInflater);
+    }
+
     /**
      * Bind the buttons to their listeners.
      */
@@ -81,19 +101,27 @@ public class ProfileFragment extends Fragment implements View.OnClickListener {
         changePwdButton.setOnClickListener(this);
     }
 
-    /// Page setup ///
+    /**
-
+     * Overridden onCreateView which serves as a fragment content creator.
+     * Checks for user data to be displayed.
+     *
+     * @param inflater The inflater used for the fragment.
+     * @param container The container which holds this fragment.
+     * @param savedInstanceState The state which was provided by onCreate.
+     * @return the timeLineInflater View which is required for the ListView to be updated.
+     */
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
                              Bundle savedInstanceState) {
-        View viewTimeline = inflater.inflate(R.layout.fragment_profile_timeline, container, false);
 
+        timeLineInflater = inflater.inflate(R.layout.fragment_profile_timeline, container, false);
+        headerInflater = inflater.inflate(R.layout.fragment_profile_header, listView, false);
+        progressBar = (ProgressBar) timeLineInflater.findViewById(R.id.progressbar_timeline);
+        progressBar.setVisibility(View.VISIBLE);
+        findHeaderViews();
+        findTimelineViews();
 
-
+        profilePicture.invalidate();
-        listView = (ListView) viewTimeline.findViewById(R.id.listview_profile);
-        View viewHeader = inflater.inflate(R.layout.fragment_profile_header, listView, false);
-        findViews(viewHeader);
-        listView.addHeaderView(viewHeader);
 
         if (user != null) {
             if(user.getPhotoUrl() != null) {
@@ -109,22 +137,19 @@ public class ProfileFragment extends Fragment implements View.OnClickListener {
             Glide.with(this).using(new FirebaseImageLoader()).load(httpsReference).into(profilePicture);
         }
 
-        profilePicture.invalidate();
-
         downloadClass = new DownloadClass(getActivity());
         downloadClass.getPostsFromServer();
-
+        return timeLineInflater;
-        return viewTimeline;
     }
 
     /**
      * Called when a view has been clicked.
      *
-     * @param v The view that was clicked.
+     * @param view The view that was clicked.
      */
     @Override
-    public void onClick(View v) {
+    public void onClick(View view) {
-        switch (v.getId()) {
+        switch (view.getId()) {
             case R.id.profile_pic_button:
                 profilePicOnClick();
                 break;
@@ -139,13 +164,13 @@ public class ProfileFragment extends Fragment implements View.OnClickListener {
      */
     private void profilePicOnClick() {
         Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
-        /* Ensure that there's a camera activity to handle the intent */
+
         if (takePictureIntent.resolveActivity(getActivity().getPackageManager()) != null) {
-            /* Create the File where the photo should go */
             try {
                 photoFile = createImageFile();
             } catch (IOException ex) {
-                Toast.makeText(getActivity(), getString(R.string.image_save_error), Toast.LENGTH_LONG).show();
+                Toast.makeText(getActivity(), getString(R.string.image_save_error),
+                                Toast.LENGTH_LONG).show();
             }
             if (photoFile != null) {
                 Uri photoURI = FileProvider.getUriForFile(getActivity(),
@@ -157,13 +182,18 @@ public class ProfileFragment extends Fragment implements View.OnClickListener {
         }
     }
 
+    /**
+     * Start display of the list; uses an adapter and listener in the main activity.
+     */
     public void startList() {
-        ProfileAdapter adapter = new ProfileAdapter(getActivity(), downloadClass.getmList());
+        ProfileAdapter adapter = new ProfileAdapter(getActivity(), downloadClass.getOwnPosts());
-            listView.setAdapter(adapter);
+        listView.setAdapter(adapter);
+        progressBar.setVisibility(View.GONE);
      }
 
     /**
      * Grabs the image just taken by the built-in camera and pushes this image to the user account.
+     *
      * @param requestCode The code which corresponds to REQUEST_TAKE_PHOTO. Used as indicator.
      * @param resultCode Code should be RESULT_OK to allow camera to proceed.
      * @param data The image data from the camera.
@@ -177,8 +207,13 @@ public class ProfileFragment extends Fragment implements View.OnClickListener {
         }
     }
 
+    /**
+     * Create the file which the camera requires to save a proper quality picture to.
+     *
+     * @return The new file.
+     * @throws IOException when insufficient permission or storage available.
+     */
     private File createImageFile() throws IOException {
-        // Create an image file name
         String imageFileName = "JPEG_" + user.getUid();
         File storageDir = getActivity().getExternalFilesDir(Environment.DIRECTORY_PICTURES);
             return File.createTempFile(
@@ -188,9 +223,6 @@ public class ProfileFragment extends Fragment implements View.OnClickListener {
             );
         }
 
-
-
-    // TODO Make this function into its own class for modularity.
     /**
      * Performs password reset action.
      */
@@ -206,8 +238,8 @@ public class ProfileFragment extends Fragment implements View.OnClickListener {
                                     Toast.LENGTH_SHORT).show();
                         }
                     });
-        } else {
-            // TODO Add code here for when there is no currently active user.
         }
     }
 }
+
+

app/MyHyvesBookPlusStagram/app/src/main/java/nl/myhyvesbookplus/tagram/TimeLineAdapter.java

@@ -1,16 +1,23 @@
 package nl.myhyvesbookplus.tagram;
 
 import android.content.Context;
+import android.graphics.Point;
+import android.graphics.Rect;
 import android.support.annotation.NonNull;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
+import android.view.animation.DecelerateInterpolator;
 import android.widget.AdapterView;
 import android.widget.BaseAdapter;
 import android.widget.ImageButton;
 import android.widget.ImageView;
 import android.widget.TextView;
+import android.animation.Animator;
+import android.animation.AnimatorListenerAdapter;
+import android.animation.AnimatorSet;
+import android.animation.ObjectAnimator;
 
 import com.bumptech.glide.Glide;
 import com.firebase.ui.storage.images.FirebaseImageLoader;
@@ -26,7 +33,7 @@ import java.util.ArrayList;
 import nl.myhyvesbookplus.tagram.model.UriPost;
 
 /**
- * Created by marijnjansen on 26/06/2017.
+ * Class which creates views for the home-page timeline. This is done with a ListView.
  */
 
 public class TimeLineAdapter extends BaseAdapter implements AdapterView.OnItemClickListener {
@@ -36,6 +43,10 @@ public class TimeLineAdapter extends BaseAdapter implements AdapterView.OnItemCl
     private ArrayList<UriPost> mData;
     private DatabaseReference mRef;
 
+    /* Hold a reference to the current animator, so that it can be canceled mid-way. */
+    private Animator mCurrentAnimator;
+
+    /* TimeLineAdapter constructor */
     TimeLineAdapter(Context context, ArrayList<UriPost> data) {
         mContext = context;
         mInflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
@@ -58,15 +69,21 @@ public class TimeLineAdapter extends BaseAdapter implements AdapterView.OnItemCl
         return position;
     }
 
+    /**
+     *  Initiate a new view to be part of the ListView.
+     * @param position The position at which the view should start.
+     * @param convertView The viewconverter.
+     * @param parent The parent of the view.
+     * @return
+     */
     @Override
     public View getView(final int position, View convertView, ViewGroup parent) {
         View rowView = mInflater.inflate(R.layout.list_item_timeline, parent, false);
 
-//        TextView userName = (TextView) rowView.findViewById(R.id.username_timeline);
         TextView comment = (TextView) rowView.findViewById(R.id.comment_timeline);
         final TextView nietSlechts = (TextView) rowView.findViewById(R.id.niet_slecht_count);
         TextView dateTime = (TextView) rowView.findViewById(R.id.timeline_date);
-        ImageView photo = (ImageView) rowView.findViewById(R.id.timeline_image);
+        final ImageView photo = (ImageView) rowView.findViewById(R.id.timeline_image);
         final ImageButton nietSlechtButton = (ImageButton) rowView.findViewById(R.id.niet_slecht_button);
 
         final UriPost post = (UriPost) getItem(position);
@@ -91,12 +108,18 @@ public class TimeLineAdapter extends BaseAdapter implements AdapterView.OnItemCl
 
         dateTime.setText(post.getDate().toString());
 
-        StorageReference ref = FirebaseStorage.getInstance().getReferenceFromUrl(post.getUri());
+        final StorageReference ref = FirebaseStorage.getInstance().getReferenceFromUrl(post.getUri());
         Glide.with(mContext)
                 .using(new FirebaseImageLoader())
                 .load(ref)
                 .into(photo);
 
+        photo.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                zoomImageFromThumb(photo, ref);
+            }
+        });
 
         return rowView;
     }
@@ -119,4 +142,140 @@ public class TimeLineAdapter extends BaseAdapter implements AdapterView.OnItemCl
         Log.d(TAG, "onItemClick: rowNumber! "+ position);
     }
 
+    /**
+     * https://developer.android.com/training/animation/zoom.html
+     * "Zooms" in a thumbnail view by assigning the high resolution image to a hidden "zoomed-in"
+     * image view and animating its bounds to fit the entire activity content area.
+     *
+     * @param thumbView  The thumbnail view to zoom in.
+     * @param imageRef The high-resolution version of the image represented by the thumbnail.
+     */
+    private void zoomImageFromThumb(final View thumbView, StorageReference imageRef) {
+        // If there's an animation in progress, cancel it immediately and proceed with this one.
+        if (mCurrentAnimator != null) {
+            mCurrentAnimator.cancel();
+        }
+
+        // Load the high-resolution "zoomed-in" image.
+        final ImageView hiddenView = (ImageView) ((MainActivity) mContext).findViewById(R.id.expanded_image);
+
+        Glide.with(mContext)
+                .using(new FirebaseImageLoader())
+                .load(imageRef)
+                .into(hiddenView);
+
+        // Calculate the starting and ending bounds for the zoomed-in image. This step
+        // involves lots of math. Yay, math.
+        final Rect startBounds = new Rect();
+        final Rect finalBounds = new Rect();
+        final Point globalOffset = new Point();
+
+        // The start bounds are the global visible rectangle of the thumbnail, and the
+        // final bounds are the global visible rectangle of the container view. Also
+        // set the container view's offset as the origin for the bounds, since that's
+        // the origin for the positioning animation properties (X, Y).
+        thumbView.getGlobalVisibleRect(startBounds);
+        ((MainActivity) mContext).findViewById(R.id.relative_layout_timeline).getGlobalVisibleRect(finalBounds, globalOffset);
+        startBounds.offset(-globalOffset.x, -globalOffset.y);
+        finalBounds.offset(-globalOffset.x, -globalOffset.y);
+
+        // Adjust the start bounds to be the same aspect ratio as the final bounds using the
+        // "center crop" technique. This prevents undesirable stretching during the animation.
+        // Also calculate the start scaling factor (the end scaling factor is always 1.0).
+        float startScale;
+        if ((float) finalBounds.width() / finalBounds.height()
+                > (float) startBounds.width() / startBounds.height()) {
+            // Extend start bounds horizontally
+            startScale = (float) startBounds.height() / finalBounds.height();
+            float startWidth = startScale * finalBounds.width();
+            float deltaWidth = (startWidth - startBounds.width()) / 2;
+            startBounds.left -= deltaWidth;
+            startBounds.right += deltaWidth;
+        } else {
+            // Extend start bounds vertically
+            startScale = (float) startBounds.width() / finalBounds.width();
+            float startHeight = startScale * finalBounds.height();
+            float deltaHeight = (startHeight - startBounds.height()) / 2;
+            startBounds.top -= deltaHeight;
+            startBounds.bottom += deltaHeight;
+        }
+
+        // Hide the thumbnail and show the zoomed-in view. When the animation begins,
+        // it will position the zoomed-in view in the place of the thumbnail.
+        thumbView.setAlpha(0f);
+        hiddenView.setVisibility(View.VISIBLE);
+
+        // Set the pivot point for SCALE_X and SCALE_Y transformations to the top-left corner of
+        // the zoomed-in view (the default is the center of the view).
+        hiddenView.setPivotX(0f);
+        hiddenView.setPivotY(0f);
+
+        // Construct and run the parallel animation of the four translation and scale properties
+        // (X, Y, SCALE_X, and SCALE_Y).
+        AnimatorSet set = new AnimatorSet();
+        set
+                .play(ObjectAnimator.ofFloat(hiddenView, View.X, startBounds.left,
+                        finalBounds.left))
+                .with(ObjectAnimator.ofFloat(hiddenView, View.Y, startBounds.top,
+                        finalBounds.top))
+                .with(ObjectAnimator.ofFloat(hiddenView, View.SCALE_X, startScale, 1f))
+                .with(ObjectAnimator.ofFloat(hiddenView, View.SCALE_Y, startScale, 1f));
+        set.setDuration(200);
+        set.setInterpolator(new DecelerateInterpolator());
+        set.addListener(new AnimatorListenerAdapter() {
+            @Override
+            public void onAnimationEnd(Animator animation) {
+                mCurrentAnimator = null;
+            }
+
+            @Override
+            public void onAnimationCancel(Animator animation) {
+                mCurrentAnimator = null;
+            }
+        });
+        set.start();
+        mCurrentAnimator = set;
+
+        // Upon clicking the zoomed-in image, it should zoom back down to the original bounds
+        // and show the thumbnail instead of the expanded image.
+        final float startScaleFinal = startScale;
+        hiddenView.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                if (mCurrentAnimator != null) {
+                    mCurrentAnimator.cancel();
+                }
+
+                // Animate the four positioning/sizing properties in parallel, back to their
+                // original values.
+                AnimatorSet set = new AnimatorSet();
+                set
+                        .play(ObjectAnimator.ofFloat(hiddenView, View.X, startBounds.left))
+                        .with(ObjectAnimator.ofFloat(hiddenView, View.Y, startBounds.top))
+                        .with(ObjectAnimator
+                                .ofFloat(hiddenView, View.SCALE_X, startScaleFinal))
+                        .with(ObjectAnimator
+                                .ofFloat(hiddenView, View.SCALE_Y, startScaleFinal));
+                set.setDuration(200);
+                set.setInterpolator(new DecelerateInterpolator());
+                set.addListener(new AnimatorListenerAdapter() {
+                    @Override
+                    public void onAnimationEnd(Animator animation) {
+                        thumbView.setAlpha(1f);
+                        hiddenView.setVisibility(View.GONE);
+                        mCurrentAnimator = null;
+                    }
+
+                    @Override
+                    public void onAnimationCancel(Animator animation) {
+                        thumbView.setAlpha(1f);
+                        hiddenView.setVisibility(View.GONE);
+                        mCurrentAnimator = null;
+                    }
+                });
+                set.start();
+                mCurrentAnimator = set;
+            }
+        });
+    }
 }

app/MyHyvesBookPlusStagram/app/src/main/java/nl/myhyvesbookplus/tagram/TimelineFragment.java

@@ -2,37 +2,99 @@ package nl.myhyvesbookplus.tagram;
 
 import android.app.Fragment;
 import android.os.Bundle;
+import android.os.Handler;
+import android.support.v4.widget.SwipeRefreshLayout;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
+import android.widget.AbsListView;
 import android.widget.ListView;
+import android.widget.ProgressBar;
+import android.widget.Toast;
 
 import nl.myhyvesbookplus.tagram.controller.DownloadClass;
 
 
 public class TimelineFragment extends Fragment {
 
+    /* Some protected and private inits */
     private ListView listView;
     private DownloadClass downloadClass;
+    private ProgressBar progressBar;
 
-    public TimelineFragment() {
+    /* Required empty public constructor */
-        // Required empty public constructor
+    public TimelineFragment() {}
+
+    /**
+     * Overridden onCreate which also starts a progress dialog for the posts being downloaded.
+     * @param savedInstanceState The standard return of the onCreate method.
+     */
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+//        progressDialog = ProgressDialog.show(getActivity(), getString(R.string.please_wait), getString(R.string.downloading_posts), false, false);
     }
 
+    /**
+     * Overridden onCreateView method which creates the ListView and contains a possible refresh
+     * functionality (swipe down page for result).
+     *
+     * https://www.survivingwithandroid.com/2014/05/android-swiperefreshlayout-tutorial-2.html
+     * Above reference was largely copied from.
+     * @param inflater The inflater used for the fragment.
+     * @param container The container which holds this fragment.
+     * @param savedInstanceState The state which was provided by onCreate.
+     * @return  the timeLineInflater View which is required for the ListView to be updated.
+     */
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
                              Bundle savedInstanceState) {
-        View view = inflater.inflate(R.layout.fragment_timeline, container, false);
+        View timeLineInflater = inflater.inflate(R.layout.fragment_timeline, container, false);
-        listView = (ListView) view.findViewById(R.id.list);
+        listView = (ListView) timeLineInflater.findViewById(R.id.list);
+        final SwipeRefreshLayout swipeView = (SwipeRefreshLayout) timeLineInflater.findViewById(R.id.swipe);
 
+        progressBar = (ProgressBar) timeLineInflater.findViewById(R.id.progressbar_timeline);
+        progressBar.setVisibility(View.VISIBLE);
+
+        swipeView.setEnabled(false);
         downloadClass = new DownloadClass(getActivity());
         downloadClass.getPostsFromServer();
 
-        return view;
+        swipeView.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
+            @Override
+            public void onRefresh() {
+                downloadClass.getPostsFromServer();
+                Toast.makeText(getActivity(), R.string.refreshing,
+                        Toast.LENGTH_LONG).show();
+                swipeView.setRefreshing(true);
+                ( new Handler()).postDelayed(new Runnable() {
+                    @Override
+                    public void run() {
+                        swipeView.setRefreshing(false);
+                    }
+                }, 1000);
+            }
+        });
+
+        listView.setOnScrollListener(new AbsListView.OnScrollListener() {
+            @Override
+            public void onScrollStateChanged(AbsListView absListView, int i) {
+            }
+
+            @Override
+            public void onScroll(AbsListView absListView, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
+                swipeView.setEnabled(firstVisibleItem == 0);
+            }
+        });
+        return timeLineInflater;
     }
 
+    /**
+     * Start display of the list; uses an adapter and listener in the main activity.
+     */
     public void startList() {
         TimeLineAdapter adapter = new TimeLineAdapter(getActivity(), downloadClass.getmList());
         listView.setAdapter(adapter);
+        progressBar.setVisibility(View.GONE);
     }
 }

app/MyHyvesBookPlusStagram/app/src/main/java/nl/myhyvesbookplus/tagram/controller/DownloadClass.java

@@ -33,10 +33,11 @@ public class DownloadClass {
                     + " must implement PostDownloadListener");
         }
         mDataRef = FirebaseDatabase.getInstance().getReference();
-        mList = new ArrayList<>();
     }
 
     public void getPostsFromServer() {
+        mList = new ArrayList<>();
+
         mDataRef.child("posts").addListenerForSingleValueEvent(new ValueEventListener() {
             @Override
             public void onDataChange(DataSnapshot dataSnapshot) {
@@ -47,6 +48,7 @@ public class DownloadClass {
                     mList.add(tempPost);
                 }
                 Collections.reverse(mList);
+
                 mListener.PostDownloaded();
             }
 
@@ -63,13 +65,14 @@ public class DownloadClass {
 
     public ArrayList<UriPost> getOwnPosts() {
         String currentUid = FirebaseAuth.getInstance().getCurrentUser().getUid();
-        ArrayList<UriPost> posts = new ArrayList<UriPost>();
+        ArrayList<UriPost> posts = new ArrayList<>();
 
         for (UriPost post : mList) {
             if (post.getPoster().equals(currentUid)) {
                 posts.add(post);
             }
         }
+
         return posts;
     }
 

app/MyHyvesBookPlusStagram/app/src/main/res/layout/fragment_camera.xml

@@ -36,14 +36,6 @@
             android:background="@android:color/transparent"
             android:src="@drawable/ic_switch_camera_black_24dp"/>
 
-        <ProgressBar
-            android:id="@+id/load_bar"
-            android:visibility="gone"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:indeterminate="true"
-            android:layout_centerInParent="true"/>
-
         <RelativeLayout
             android:id="@+id/filter_buttons"
             android:layout_width="match_parent"

app/MyHyvesBookPlusStagram/app/src/main/res/layout/fragment_profile_timeline.xml

@@ -1,14 +1,35 @@
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/relative_layout_timeline_profile"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical"
     tools:context="nl.myhyvesbookplus.tagram.TimelineFragment">
 
-    <ListView
+    <RelativeLayout
-        android:id="@+id/listview_profile"
         android:layout_width="match_parent"
         android:layout_height="match_parent">
-    </ListView>
 
-</LinearLayout>
+        <ProgressBar
+            android:id="@+id/progressbar_timeline"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_centerInParent="true"
+            android:indeterminate="true"
+            android:visibility="gone"/>
+
+        <ListView
+            android:id="@+id/list"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent">
+        </ListView>
+
+    </RelativeLayout>
+
+    <ImageView
+        android:id="@+id/expanded_image_profile"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:visibility="invisible" />
+
+</RelativeLayout>

app/MyHyvesBookPlusStagram/app/src/main/res/layout/fragment_timeline.xml

@@ -1,23 +1,43 @@
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/relative_layout_timeline"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical"
     tools:context="nl.myhyvesbookplus.tagram.TimelineFragment">
 
-    <android.support.v4.widget.SwipeRefreshLayout
+    <RelativeLayout
-        xmlns:android="http://schemas.android.com/apk/res/android"
-        android:id="@+id/swiperefresh"
         android:layout_width="match_parent"
         android:layout_height="match_parent">
 
-        <ListView
+        <ProgressBar
-            android:id="@+id/list"
+            android:id="@+id/progressbar_timeline"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_centerInParent="true"
+            android:indeterminate="true"
+            android:visibility="gone"/>
+
+        <android.support.v4.widget.SwipeRefreshLayout
+            xmlns:android="http://schemas.android.com/apk/res/android"
+            android:id="@+id/swipe"
             android:layout_width="match_parent"
             android:layout_height="match_parent">
-        </ListView>
 
-    </android.support.v4.widget.SwipeRefreshLayout>
+            <ListView
+                android:id="@+id/list"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent">
+            </ListView>
+        </android.support.v4.widget.SwipeRefreshLayout>
+
+    </RelativeLayout>
 
 
-</LinearLayout>
+    <ImageView
+        android:id="@+id/expanded_image"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:visibility="invisible" />
+
+</RelativeLayout>

app/MyHyvesBookPlusStagram/app/src/main/res/layout/list_item_timeline.xml

@@ -8,13 +8,11 @@
         android:layout_width="match_parent"
         android:layout_height="15dp" />
 
-    <!--
     <TextView
         android:id="@+id/username_timeline"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_gravity="center"/>
-    -->
 
     <ImageView
         android:id="@+id/timeline_image"
@@ -22,6 +20,15 @@
         android:layout_height="250dp"
         android:layout_gravity="center" />
 
+    <TextView
+        android:id="@+id/timeline_date"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center_horizontal"
+        android:paddingBottom="5dp"
+        android:textColor="#AAAAAA"
+        android:text="date/time" />
+
     <TextView
         android:id="@+id/comment_timeline"
         android:layout_width="wrap_content"
@@ -29,28 +36,27 @@
         android:layout_gravity="center_horizontal"
         android:text="Hallo Ik ben een comment!" />
 
-    <TextView
+    <LinearLayout
-        android:id="@+id/timeline_date"
+        android:padding="5dp"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:text="date/time" />
+        android:gravity="center_horizontal"
-    <LinearLayout
+        android:orientation="horizontal">
-        android:layout_width="match_parent"
+
-        android:layout_height="40dp">
         <ImageButton
             android:id="@+id/niet_slecht_button"
-            android:layout_width="200dp"
+            android:layout_width="150dp"
-            android:layout_height="match_parent" />
+            android:layout_height="40dp"
-        <TextView
+            android:scaleType="centerInside"
-            android:layout_width="wrap_content"
+            android:background="@android:color/transparent"
-            android:layout_height="match_parent"
+            android:src="@drawable/niet_slecht"/>
-            android:gravity="center"
+
-            android:text="@string/niet_slecht" />
         <TextView
             android:id="@+id/niet_slecht_count"
             android:layout_width="wrap_content"
             android:layout_height="match_parent"
             android:gravity="center"
+            android:textSize="20sp"
             android:text="10" />
     </LinearLayout>
 

app/MyHyvesBookPlusStagram/app/src/main/res/layout/list_item_timeline_profile.xml

@@ -18,26 +18,29 @@
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:gravity="center_horizontal"
-        android:text="Hallo Ik ben een comment!" />
+        android:text="@string/comment_placeholder" />
+
 
     <LinearLayout
+        android:gravity="center"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:gravity="center_horizontal"
         android:orientation="horizontal">
 
-        <Button
+        <ImageButton
-            android:layout_width="wrap_content"
+            android:id="@+id/niet_slecht_button"
-            android:layout_height="wrap_content"
+            android:layout_width="150dp"
-            android:clickable="false"
+            android:layout_height="40dp"
-            android:text="@string/niet_slecht"/>
+            android:scaleType="centerInside"
+            android:background="@android:color/transparent"
+            android:src="@drawable/niet_slecht"/>
+
         <TextView
             android:id="@+id/niet_slecht_count_profile"
             android:layout_width="wrap_content"
             android:layout_height="match_parent"
             android:gravity="center"
-            android:textSize="20dp"
+            android:textSize="20sp"
-            android:padding="10dp"
             android:text="10" />
     </LinearLayout>
 

app/MyHyvesBookPlusStagram/app/src/main/res/values-nl/strings.xml

@@ -11,27 +11,28 @@
     <string name="title_home">Tijdlijn</string>
     <string name="title_notifications">Profiel</string>
     <string name="username">Gebruikersnaam</string>
-    <string name="confirm_password_hint">bevestig wachtwoord</string>
     <string name="logo_text">MyHyvesBookPlusTagram logo</string>
     <string name="logout_button">Uitloggen</string>
     <string name="profile_picture_button">Wijzig Profiel Foto</string>
     <string name="profile_picture_description">profiel foto</string>
     <string name="change_psw_button">Wachtwoord wijzigen</string>
     <string name="please_wait">Momentje</string>
-    <string name="hello_blank_fragment">Hallo leeg fragment</string>
-    <string name="hello_camera">Hallo Camera fragment</string>
     <string name="login_error">Voer alstublieft email en wachtwoord in</string>
     <string name="mail_failed">Er is een fout opgetreden. Controleer internetverbinding.</string>
     <string name="mail_successful">Er is een e-mail verzonden. Volg a.u.b. de instructies.</string>
-    <string name="password_match_error">Wachtwoorden komen niet overeen</string>
+    <string name="password_match_error">Wachtwoorden komoen niet overeen</string>
     <string name="register_error">Vul alstublieft alle velden in</string>
     <string name="save">Opslaan</string>
     <string name="upload">Uploaden</string>
     <string name="image_save_error">Foto opslaan mislukt. Zorg a.u.b. dat er genoeg ruimte op uw telefoon beschikbaar is.</string>
     <string name="update_profile_pic_error">Het updaten van de profielfoto is mislukt. Controleer uw internetverbinding.</string>
     <string name="upload_profile_pic">Profielfoto aan het uploaden…</string>
-    <string name="niet_slecht">\"\"Niet slecht.\"s: \"</string>
+    <string name="niet_slecht">Niet Slecht.</string>
-    <string name="mail_success">An e-mail was sent, please follow its instructions.</string>
     <string name="comment">Bijschrift:</string>
     <string name="cancel">Annuleer</string>
+    <string name="comment_placeholder">Hallo Ik ben een comment!</string>
+    <string name="refreshing">Verversen…</string>
+    <string name="downloading_posts">Posts worden gedownload…</string>
+    <string name="logging_in">Aan het inloggen</string>
+    <string name="registering">Aan het registreren</string>
 </resources>

app/MyHyvesBookPlusStagram/app/src/main/res/values/strings.xml

@@ -6,7 +6,6 @@
     <string name="username">Username</string>
     <string name="password">Password</string>
     <string name="confirm_password">Confirm Password</string>
-    <string name="confirm_password_hint">confirm password</string>
     <string name="login_button">Login</string>
     <string name="register">Register</string>
     <string name="back_to_login">back to Login</string>
@@ -14,8 +13,6 @@
     <string name="login_error">Please fill in email and password</string>
     <string name="password_match_error">Passwords do not match</string>
     <string name="register_error">Please fill in all the fields</string>
-    <string name="hello_blank_fragment">Hello blank fragment</string>
-    <string name="hello_camera">Hello Camera</string>
     <string name="logo_text">MyHyvesBookPlusTagram logo</string>
     <string name="logout_button">Logout</string>
     <string name="profile_picture_button">Change Profile Picture</string>
@@ -32,4 +29,9 @@
     <string name="upload_profile_pic">Uploading profile picture…</string>
     <string name="comment">Comment:</string>
     <string name="cancel">Cancel</string>
+    <string name="comment_placeholder">Hello, I am a comment!</string>
+    <string name="refreshing">Refreshing…</string>
+    <string name="downloading_posts">Downloading posts…</string>
+    <string name="registering">Registering</string>
+    <string name="logging_in">Logging in</string>
 </resources>