Clever Geek Handbook

Android is waiting for the animation to complete

I move the image and I want to play the sound file after the animation of the object finishes.
The image is moving, but I tried to use Threads to wait until it continues, but it didn't work.

Animation animationFalling = AnimationUtils.loadAnimation(this, R.anim.falling);
iv.startAnimation(animationFalling);
MediaPlayer mp_file = MediaPlayer.create(this, R.raw.s1);
duration = animationFalling.getDuration();
mp_file.pause();
new Thread(new Runnable() {
    public void run() {
        try {
            Thread.sleep(duration);
            mp_file.start();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
  }).start();

Thank.

+3


source to share


2 answers


you can register a delegate for animation:

animationFalling.setAnimationListener(new AnimationListener() {

     @Override
     public void onAnimationStart(Animation animation) {    
     }

     @Override
     public void onAnimationRepeat(Animation animation) {
     }

     @Override
     public void onAnimationEnd(Animation animation) {
           // here you can play your sound
     }
);


you can read more about AnimationListener here

+7


source


Suggest you

  • Create an object to encapsulate the animation lifecycle
  • In an object you will have a thread or a timer
  • Provide methods to start () the animation and awaitCompletion()

  • Use a private target Object completionMonitor

    to track completion, sync on it, and use wait() and notifyAll()

    to coordinate waitingCompletion ()

Snippet of code:



final class Animation {

    final Thread animator;

    public Animation()
    {
      animator = new Thread(new Runnable() {
        // logic to make animation happen
       });

    }

    public void startAnimation()
    {
      animator.start();
    }

    public void awaitCompletion() throws InterruptedException
    {
      animator.join();
    }
}

You can also use ThreadPoolExecutor

with a single thread or ScheduledThreadPoolExecutor

and capture each frame of the animation as Callable. Sending a Callables sequence and using invokeAll() or a CompletionService

it to block your thread of interest until the animation finishes.

-1


source






More articles:


All Articles