Stopping animations in Android Studio

I am trying to make an animation in android studio that will start when I double click the screen. Since I am using a scroll view and that takes up the whole screen I used that as the view to detect the double tap.

I wanted 2 things to happen: 1. When ever I double tap the screen, the animation should start and stop. And 2. When I play with the volume rockers it will speed up the animation, even if the animation already started.

So far here is my code for the double tap method:

private void doubleTapToScroll() { findViewById(R.id.minchaScroll).setOnTouchListener(new View.OnTouchListener() { private GestureDetector gestureDetector = new GestureDetector(new GestureDetector.SimpleOnGestureListener() { @Override public boolean onDoubleTap(MotionEvent e) {

                mScrollView.post(new Runnable() {

                    @Override
                    public void run() {

//                            while(mScrollView.getScrollY() <= findViewById(R.id.alenuPart3).getBottom()){
//
//                                audio = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
//                                int currentVolume = audio.getStreamVolume(AudioManager.STREAM_RING);
//
//
//                                ObjectAnimator.ofInt(mScrollView, "scrollY", (findViewById(R.id.minchaLinearLayout)).getBottom()).setDuration(currentVolume*100000).start();
//
//                            }
                        audio = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
                        int currentVolume = audio.getStreamVolume(AudioManager.STREAM_RING);
                        ObjectAnimator animator = ObjectAnimator.ofInt(mScrollView, "scrollY", (findViewById(R.id.minchaLinearLayout)).getBottom()).setDuration(currentVolume * 10000);

                        autoScrollOn = !autoScrollOn;

                        if (animator.isRunning()) {
                            animator.start();
                        } else {
                            animator.cancel();
                        }

                        Log.d("In Run Method", String.valueOf(autoScrollOn));
                    }
                });
                return super.onDoubleTap(e);
            }
        });

I am working on part 1 for now, for some reason the animation will not pause.

Also for part 2, I already take in the volume level and if I change it before the animation starts it works at different speeds, I am in the process of trying to make the speed change while the animation is on with a while loop and restarting the animation, but I don't think that would be the ideal way, any ideas?

Thanks!

Update: I tried, .pause, .end and mScrollView.clearAnimation(); (not sure if that is even a good thought)

---

I figured it out.

It was because in the line of :

 ObjectAnimator animator = ObjectAnimator.ofInt(mScrollView, "scrollY", (findViewById(R.id.minchaLinearLayout)).getBottom()).setDuration(currentVolume * 10000);

I was creating a new animator object every single double click, so when I went to pause the animator on the second double click. I was creating a new animator object and pauseing that one.

I fixed it by making a boolean of firstDoubleClick and then making it false right there after. The next time around, it didn't make a new object rather paused the old one.

链接地址: http://www.djcxy.com/p/91202.html

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