Glide Crash

gistfile1.txt

public class CrossFade
{
	private int     mDuration   = 1500;

	private ViewPropertyAnimator alphaAnim;

	public CrossFade(int duration)
	{
		mDuration = duration;
	}

	public void crossFadeImage(final ImageView newView, final ImageView oldView, final Drawable newImage, boolean fadeIn)
	{
		if (alphaAnim != null)
		{
			// Cancel previous animation so there isn't a flicker when you start the new one
			alphaAnim.cancel();
		}

		if (fadeIn)
		{
			setImage(newView, newImage, 0f);

			// Cross fade image
			alphaAnim = AnimationHelper.prepareFadeView(newView, 0f, 1f, 0, mDuration, new AnimatorListenerAdapter()
			{
				@Override
				public void onAnimationEnd(Animator animator)
				{
					setImage(oldView, newImage);
					newView.setVisibility(View.GONE);
				}
			});

			alphaAnim.start();
		}
		else
		{
			setImage(oldView, newImage);
		}
	}

	private void setImage(ImageView view, Drawable image)
	{
		setImage(view, image, 1f);
	}

	private void setImage(ImageView view, Drawable image, float alpha)
	{
		view.setAlpha(alpha);
		view.setImageDrawable(image);
	}
}

// Load all 3 images immediately after crossfade finishes, start new batch on 6 sec timer.
private class SplashboardPostcards
{
	private CrossFadePostcard mMainPostcard;
	private CrossFadePostcard mTopRightPostcard;
	private CrossFadePostcard mBottomRightPostcard;

	private int mDownloadSize = 0;

	private int mSize = 0;

	public SplashboardPostcards(View view)
	{
		mMainPostcard = new CrossFadePostcard((ImageView)view.findViewById(R.id.sb_postcard_main), (ImageView)view.findViewById(R.id.sb_postcard_main_old));
		mTopRightPostcard = new CrossFadePostcard((ImageView)view.findViewById(R.id.sb_postcard_top_right), (ImageView)view.findViewById(R.id.sb_postcard_top_right_old));
		mBottomRightPostcard = new CrossFadePostcard((ImageView)view.findViewById(R.id.sb_postcard_bottom_right), (ImageView)view.findViewById(R.id.sb_postcard_bottom_right_old));
	}

	private void updatePhotos(List<String> photos)
	{
		mSize = photos.size();

		if (mDownloadSize == 0)
		{
			Activity activity = getActivity();
			mDownloadSize = Math.max(ScreenSizeHelper.getScreenHeight(activity),
									 ScreenSizeHelper.getScreenWidth(activity)) / 2;
		}

		// Load 1, 2 or 3 images based on size
		switch (mSize)
		{
			case 3:
				loadImage(mBottomRightPostcard, photos.get(2));
				//fallthrough
			case 2:
				loadImage(mTopRightPostcard, photos.get(1));
				//fallthrough
			case 1:
				loadImage(mMainPostcard, photos.get(0));
		}
	}

	private void loadImage(final CrossFadePostcard postcard, String photo)
	{
		Glide.with(SplashboardFragment.this)
			 .load(photo)
			 .override(mDownloadSize, mDownloadSize)
			 .centerCrop()
			 .into(new GlideDrawableImageViewTarget(postcard.mNewImageView)
			 {
				 @Override
				 public void onResourceReady(GlideDrawable drawable, GlideAnimation anim)
				 {
					 crossFadeWhenReady(postcard, drawable);
				 }
			 });
	}

	// This method synchronizes the cross fade for all images
	private void crossFadeWhenReady(CrossFadePostcard postcard, Drawable drawable)
	{
		postcard.mDrawable = drawable;

		boolean performedCrossFade = false;

		if (mSize >= 3 && mMainPostcard.isReady() && mTopRightPostcard.isReady() && mBottomRightPostcard.isReady())
		{
			mMainPostcard.performCrossFade();
			mTopRightPostcard.performCrossFade();
			mBottomRightPostcard.performCrossFade();
			performedCrossFade = true;
		}
		else if (mSize == 2 && mMainPostcard.isReady() && mTopRightPostcard.isReady())
		{
			mMainPostcard.performCrossFade();
			mTopRightPostcard.performCrossFade();
			performedCrossFade = true;
		}
		else if (mSize == 1 && mMainPostcard.isReady())
		{
			mMainPostcard.performCrossFade();
			performedCrossFade = true;
		}

		// Only queue up next image load, after previous one has finished (prevent race condition)
		if (performedCrossFade)
		{
			mHandler.postDelayed(nextPostcardUpdate, FEED_DELAY);
		}
	}

	private class CrossFadePostcard
	{
		private ImageView mNewImageView;
		private ImageView mOldImageView;
		private CrossFade mCrossFade = new CrossFade(800);
		private Drawable  mDrawable  = null;

		CrossFadePostcard(ImageView newImageView, ImageView oldImageView)
		{
			mNewImageView = newImageView;
			mOldImageView = oldImageView;
		}

		boolean isReady()
		{
			return mDrawable != null;
		}

		void performCrossFade()
		{
			mCrossFade.crossFadeImage(mNewImageView, mOldImageView, mDrawable, true);
			mDrawable = null;
		}
	}
}


private Runnable nextPostcardUpdate = new Runnable()
{
	@Override
	public void run()
	{
		if (isAdded())
		{
			mPostcards.updatePhotos(mRandomImages.getNextImages());
		}
		else
		{
			mHandler.postDelayed(nextPostcardUpdate, FEED_DELAY);
		}
	}
};

// return 3 random images, different than the currently displayed ones
public List<String> getNextImages() { ... }

Fragment's onResume()
	mHandler.removeCallbacks(nextPostcardUpdate);
	mHandler.post(nextPostcardUpdate);

Fragment's onPause()
	if (mHandler != null)
	{
		mHandler.removeCallbacks(nextPostcardUpdate);
	}