Java – How to stop the animation when needed and start it instantly in android

I’m new to android and I need help.

When I click on a button on my keyboard that has the same label as the image, I expect the image that falls from the top of the screen to become invisible. Although I have implemented the above points, the problem arises when I want to show the next animation again immediately after the previous image is not visible. Here is my animation code.

public void startAnimation(final ImageView aniView) 
{

animator= ValueAnimator.ofFloat(0 ,.85f);
    animator.setDuration(Constants.ANIM_DURATION);
    animator.setInterpolator(null);

generation of random values
    Random rand = new Random();
    index = rand.nextInt((int) metrics.widthPixels);
    for debugging
    i = Integer.toString(index);
    Log.e(" index is :", i);
    animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener()
    {       

@Override
        public void onAnimationUpdate(ValueAnimator animation)
        {
            float value = ((Float) (animation.getAnimatedValue())).floatValue();

aniView.setTranslationX(index);

aniView.setTranslationY((height+ (50*mScale))*value);
            aniView.setTranslationY(height);
        }
    });
    animator.start();
}

keyboard methods goes here

@Override
public void onClick(View v)
{
    gettext(v);
}

private void gettext(View v)
{
    try
    {
        String b = "";
        b = (String) v.getTag();

String img_val = map.get(b);
        int  imgid = (Integer) imageView.getTag();

Log.e("img values=:", img_val+"  "+imgid);
        if(img_val.equals(ALPHABETS[imgid]))
        {
            imageView.setVisibility(View.INVISIBLE);

animator.start();
            trying to start the animation again 
        }   

I’m using animation.addupdateListener to invoke the animation again and again, but it only calls when the .ofFloat completes the value. When I click the appropriate button, the animation becomes invisible, but the next animation starts again at the same time. I want to start right away.

Basically calling start() again won’t work. You need to somehow “reset” the animation, have you tried calling end() before?

animator.end();
animator.start();