Android Custom ImageView for animating frame by frame some bitmap or ressources

FrameAnimatedImageView.java

/**
 * <h1>FrameAnimatedImageView</h1>
 * View class to handle several images into an {@link android.widget.ImageView}
 * <p>
 *
 * @author  Florian ALONSO
 * @see     BitmapDrawable
 * @see     AnimationDrawable
 * @see     ContextCompat
 */
public class FrameAnimatedImageView extends android.support.v7.widget.AppCompatImageView {

    private AnimationDrawable animationDrawable;

    public FrameAnimatedImageView(Context context) {
        super(context);
    }

    public FrameAnimatedImageView(Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
    }

    public FrameAnimatedImageView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    /**
     * Start an animation with the list of resources given
     *
     * @param resourcesList the list of images to display in the specified order
     */
    public void startAnimatedResources(final @DrawableRes int... resourcesList) {
        this.startAnimatedResources(777, resourcesList);
    }

    /**
     * Start an animation with the list of resources given with a defined time of animation in ms
     *
     * @param resourcesList the list of images to display in the specified order
     * @param loopDurationMs the total time of the animation required in ms
     */
    public void startAnimatedResources(final int loopDurationMs, final @DrawableRes int... resourcesList) {
        final BitmapDrawable[] drawablesList = new BitmapDrawable[resourcesList.length];
        for (int i = 0; i < resourcesList.length; i++) {
            Drawable drawable = ContextCompat.getDrawable(getContext(), resourcesList[i]);
            if (drawable != null && drawable instanceof BitmapDrawable) {
                drawablesList[i] = (BitmapDrawable) drawable;
            }
        }
        this.startAnimatedDrawable(drawablesList, loopDurationMs);
    }

    /**
     * Start an animation with the list of images given with a defined time of animation in ms
     *
     * @param drawablesList the list of images to display in the specified order
     */
    public void startAnimatedDrawable(final BitmapDrawable[] drawablesList) {
        this.startAnimatedDrawable(drawablesList, getContext().getResources().getInteger(R.integer.animation_duration_framed_image));
    }

    /**
     * Start an animation with the list of images given with a defined time of animation in ms
     *
     * @param drawablesList the list of images to display in the specified order
     * @param loopDurationMs the total time of the animation required in ms
     */
    public void startAnimatedDrawable(final BitmapDrawable[] drawablesList, final int loopDurationMs) {
        if (animationDrawable != null) {
            stopAnimatedFrames();
        }
        if (drawablesList.length == 0) {
            return;
        }
        animationDrawable = new AnimationDrawable();

        int singleImageDurationMs = loopDurationMs / drawablesList.length;

        for (BitmapDrawable bitmapDrawable : drawablesList) {
            animationDrawable.addFrame(bitmapDrawable, singleImageDurationMs);
        }
        animationDrawable.setOneShot(false);
        this.setImageDrawable(animationDrawable);
        animationDrawable.start();
    }

    /**
     * Stops all animations in the view
     */
    public void stopAnimatedFrames() {
        if (animationDrawable != null) {
            animationDrawable.stop();
            animationDrawable = null;
        }
    }
}