Why do the transitions no longer work?

Question

When I initially entered the transitions they worked fine. When more code was added the lyrics no longer show. Only the animations.

Here is my code:

public class AlbumDetailActivity extends Activity {

public static final String EXTRA_ALBUM_ART_RESID = "EXTRA_ALBUM_ART_RESID";

@Bind(R.id.album_art) ImageView albumArtView;
@Bind(R.id.fab) ImageButton fab;
@Bind(R.id.title_panel) ViewGroup titlePanel;
@Bind(R.id.track_panel) ViewGroup trackPanel;
@Bind(R.id.detail_container) ViewGroup detailContainer;

private TransitionManager mTransitionManager;
private Scene mExpandedScene;
private Scene mCollapsedScene;
private Scene mCurrentScene;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_album_detail);
    ButterKnife.bind(this);
    populate();
    setupTransitions();
}

private void animate() {

// ObjectAnimator scalex = ObjectAnimator.ofFloat(fab, "scaleX", 0, 1); // ObjectAnimator scaley = ObjectAnimator.ofFloat(fab, "scaleY", 0, 1); // AnimatorSet scaleFab = new AnimatorSet(); // scaleFab.playTogether(scalex, scaley); Animator scaleFab = AnimatorInflater.loadAnimator(this, R.animator.scale); scaleFab.setTarget(fab);

    int titleStartValue = titlePanel.getTop();
    int titleEndValue = titlePanel.getBottom();
    ObjectAnimator animatorTitle = ObjectAnimator.ofInt(titlePanel, "bottom", titleStartValue, titleEndValue);
    animatorTitle.setInterpolator(new AccelerateInterpolator());

    int trackStartValue = trackPanel.getTop();
    int trackEndValue = trackPanel.getBottom();
    ObjectAnimator animatorTrack = ObjectAnimator.ofInt(trackPanel, "bottom", trackStartValue, trackEndValue);
    animatorTrack.setInterpolator(new DecelerateInterpolator());

    titlePanel.setBottom(titleStartValue);
    trackPanel.setBottom(titleStartValue);
    fab.setScaleX(0);
    fab.setScaleY(0);

// animatorTitle.setDuration(1000); // animatorTrack.setDuration(1000); // animatorTitle.setStartDelay(1000);

    AnimatorSet set = new AnimatorSet();
    set.playSequentially(animatorTitle, animatorTrack, scaleFab);
    set.start();
}

@OnClick(R.id.album_art)
public void onAlbumArtClick(View view) { animate(); }

@OnClick(R.id.track_panel)
public void onTrackPanelClicked(View view) {
    if (mCurrentScene == mExpandedScene) {
        mCurrentScene = mCollapsedScene;
    }
    else {
        mCurrentScene = mExpandedScene;
    }
    mTransitionManager.transitionTo(mCurrentScene);
}

private void setupTransitions() {
    mTransitionManager = new TransitionManager();
    ViewGroup transitionRoot = detailContainer;

    //Expanded scene
    mExpandedScene = Scene.getSceneForLayout(transitionRoot,
            R.layout.activity_album_detail_expanded, this);

    mExpandedScene.setEnterAction(new Runnable() {
        @Override
        public void run() {
            ButterKnife.bind(AlbumDetailActivity.this);
            populate();
            mCurrentScene = mExpandedScene;
        }
    });

    TransitionSet expandTransitionSet = new TransitionSet();
    expandTransitionSet.setOrdering(TransitionSet.ORDERING_SEQUENTIAL);
    ChangeBounds changeBounds = new ChangeBounds();
    changeBounds.setDuration(200);
    expandTransitionSet.addTransition(changeBounds);

    Fade fadeLyrics = new Fade();
    fadeLyrics.addTarget(R.id.lyrics);
    fadeLyrics.setDuration(150);
    expandTransitionSet.addTransition(fadeLyrics);


    //Collapsed scene
    mCollapsedScene = Scene.getSceneForLayout(transitionRoot,
            R.layout.activity_album_detail, this);

    mCollapsedScene.setEnterAction(new Runnable() {
        @Override
        public void run() {
            ButterKnife.bind(AlbumDetailActivity.this);
            populate();
            mCurrentScene = mCollapsedScene;
        }
    });

    TransitionSet collapseTransitionSet = new TransitionSet();
    collapseTransitionSet.setOrdering(TransitionSet.ORDERING_SEQUENTIAL);

    Fade fadeOutLyrics = new Fade();
    fadeOutLyrics.addTarget(R.id.lyrics);
    fadeOutLyrics.setDuration(150);
    collapseTransitionSet.addTransition(fadeOutLyrics);

    ChangeBounds resetBounds = new ChangeBounds();
    resetBounds.setDuration(200);
    collapseTransitionSet.addTransition(resetBounds);

    mTransitionManager.setTransition(mExpandedScene, mCollapsedScene, collapseTransitionSet);
    mTransitionManager.setTransition(mCollapsedScene, mExpandedScene, expandTransitionSet);
    mCollapsedScene.enter();


}

private void populate() {
    int albumArtResId = getIntent().getIntExtra(EXTRA_ALBUM_ART_RESID, R.drawable.mean_something_kinder_than_wolves);
    albumArtView.setImageResource(albumArtResId);

    Bitmap albumBitmap = getReducedBitmap(albumArtResId);
    colorizeFromImage(albumBitmap);
}


private Bitmap getReducedBitmap(int albumArtResId) {
    // reduce image size in memory to avoid memory errors
    final BitmapFactory.Options options = new BitmapFactory.Options();
    options.inJustDecodeBounds = false;
    options.inSampleSize = 8;
    return BitmapFactory.decodeResource(getResources(), albumArtResId, options);
}

private void colorizeFromImage(Bitmap image) {
    Palette palette = Palette.from(image).generate();

    // set panel colors
    int defaultPanelColor = 0xFF808080;
    int defaultFabColor = 0xFFEEEEEE;
    titlePanel.setBackgroundColor(palette.getDarkVibrantColor(defaultPanelColor));
    trackPanel.setBackgroundColor(palette.getLightMutedColor(defaultPanelColor));

    // set fab colors
    int[][] states = new int[][]{
            new int[]{android.R.attr.state_enabled},
            new int[]{android.R.attr.state_pressed}
    };

    int[] colors = new int[]{
            palette.getVibrantColor(defaultFabColor),
            palette.getLightVibrantColor(defaultFabColor)
    };
    fab.setBackgroundTintList(new ColorStateList(states, colors));
}

}

Welcome to the Treehouse Community

Looking to learn something new?

Christina Campbell

Christina Campbell

Why do the transitions no longer work?