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我已经在这个问题上工作了几天，但一直无法解决这个问题。

我有许多动画都实现为 Runnables，当用户使用应用程序时，它们将持续运行。从 logo_animation000 到 115 和 z_animation000 到 515 有 4 种不同的动画：

  • ConnectingAnimation（在应用程序连接到设备时运行）
  • ConnectingCompleteAnimation（连接完成时运行一次）
  • TransitiontoSleepingAnimation(当应用状态改变时运行一次)
  • SleepingAnimation（在应用程序状态为：“Sleeping”时运行

这些动画太大而无法使用常规动画列表来工作，因此我被迫使用自己的实现。我用以下课程“解决”了这个问题：

    abstract class MyAnimationRunnable implements Runnable {
        protected final int interval;
        protected final String pattern;
        protected final OptimisedImageView view;
        protected long firstFrameAt;
        protected int current;
        protected Drawable drawable;
        protected int frameCounter = 0;

        public MyAnimationRunnable(int interval, int firstFrame, String pattern, OptimisedImageView view) {
            this.interval = interval;
            this.pattern = pattern;
            this.view = view;
            this.current = firstFrame;
            this.firstFrameAt = SystemClock.elapsedRealtime();
            handler.post(this);
        }

        @Override
        public void run() {
            final String name = String.format(Locale.ENGLISH, pattern, current);
            final int id = getResources().getIdentifier(name, "drawable", getPackageName());
            if (id != 0) {
                final Drawable drawable = getResources().getDrawable(id);
                view.setImageDrawable(drawable);
            }
            current++;
            if (runAgain()) {
                frameCounter++;
                long nextAt = firstFrameAt + (frameCounter * interval);
                long delay = nextAt - SystemClock.elapsedRealtime() - 1;
                if (delay > 0) {
                    handler.postDelayed(this, delay);
                } else {
                    this.run();
                }
            }
        }

        protected abstract boolean runAgain();
    };

   private void startSleepingAnimation() 
    {

        zzzAnimation = new MyAnimationRunnable(50, 1, "z_animation%04d", zzzImageView) {
            @Override
            protected boolean runAgain() {
                if (current == 510) {
                    current = 470; // this seems to fit into the infinite loop.
                }
                return true;
            }
        };
    }

    private void startConnectingAnimation() {
        handler.removeCallbacks(connectingCompleteAnimation);
        handler.removeCallbacks(zzzAnimation);
        handler.removeCallbacks(transitionToSleepingAnimation);
        connectingResourceCount = 1;
        zzzImageView.setImageBitmap(null);
        connectingAnimation = new MyAnimationRunnable(50, connectingResourceCount, "logo_animation%04d", babyImageView) {
            @Override
            protected boolean runAgain() {
                if (current == 30) {
                    current = 1;
                }
                connectingResourceCount = current;
                return true;
            }
        };
    }

    // The remaining two animations have been left out since this oughta be sufficient for understanding the code.

这在我的三星 Galaxy S3 上运行良好。然而，在旧手机上，这会在 20-30 秒后导致崩溃。关于如何使这段代码更轻、更高效的任何想法？

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