Value Animator android

Question

我正在尝试用value animator一个接一个地制作3个图像的动画，但是在常规的intervals..Suppose之后，我无法决定如何调用这三个处理程序。有3个图像，我正在制作三个用于动画them.But的处理程序。在常规的intervals.Please帮助中，我能够一次处理这三个图像，但不能一个接一个地执行。

这是我从我的处理程序调用的UpdateListener

public void startAnimation_image(final ImageView aniView) {

    animator = ValueAnimator.ofFloat(0, .8f);
    animator.setDuration(Constants.ANIM_DURATION);

    animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {

        int Low = 10;
        int High = width-150;
        int R = (int) ((Math.random() * (High - Low)) + Low);

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

             Log.e("mscale",150*mScale +"");
             Log.e("value is", value+"");

            aniView.setTranslationY((mDisplaySize.bottom + (150*mScale))*value);

            x_point = aniView.getTranslationX();
            y_point = aniView.getTranslationY();
        }
    });

    animator.addListener(new AnimatorListener() {

        @Override
        public void onAnimationStart(Animator arg0) {

        }
        @Override
        public void onAnimationRepeat(Animator arg0) {

        }
        @Override
        public void onAnimationEnd(Animator arg0) {

            startAnimation();
        }
        @Override
        public void onAnimationCancel(Animator arg0) {

        }
    });

    animator.start();
}

这是我的一个训练员

@Override
    public void handleMessage(Message msg) {
        super.handleMessage(msg);

        //int viewId = new Random().nextInt(STARS.length);

         id =   getApplicationContext().getResources().getIdentifier(STARS[0], "drawable", 
          getApplicationContext().getPackageName());

         inflate = LayoutInflater.from(StarsActivity2.this);


        img[0].setVisibility(ImageView.VISIBLE);
        img[0].setImageResource(id);

        mAllImageViews.add(img[0]);         

        LayoutParams animationLayout = (LayoutParams) img[0].getLayoutParams();
        img[0].setLayoutParams(animationLayout);
        Log.e("mHandler",img[0]+ "");
        startAnimation_image(img[0]);           
    }
};

类似地，有三个处理程序和三个更新侦听器。请帮帮我。

Answer 1

可以通过调用offset ms来延迟动画

animation.setStartOffset(offset);

因此，对于三个持续时间为ANIM_DURATION的图像，您可以使用以下值按顺序启动它们(可能需要将它们作为参数传递给startAnimation_image())

// note: this is for illustrative purposes. You should put this in a loop
int firstOffset = 0 * ANIM_DURATION; // starts immediately
int secondOffset = 1 * ANIM_DURATION; // starts after the first animation is finished
int thirdOffset = 2 * ANIM_DURATION; // starts after the second animation is finished
// ... and so on.