android 添加到购物车动画

今天做添加到购物车的动画，之前有做过，只是拷贝被人的代码而已，今天想起来自己整理了一下，没相当这么简单，下面就是我封装的代码，只需要简单的操作就可以完成加入购物车动画。

先来一张效果图：



代码只复制了一部分，用起来方便灵活

/**
* @param from:点击位置的view
* @param to：终点位置的view
*/
private void showAssignView(View from, View to) {

// 一个整型数组，用来存储按钮的在屏幕的X、Y坐标
final int[] startLocation = new int[2];
// 这是获取购买按钮的在屏幕的X、Y坐标（这也是动画开始的坐标）
from.getLocationInWindow(startLocation);

final int[] endLocation = new int[2];
to.getLocationInWindow(endLocation);

final int moveX = endLocation[0] - startLocation[0];
final int moveY = endLocation[1] - startLocation[1];

final ViewGroup rootView = (ViewGroup) this.getWindow().getDecorView();
final View addView = getAssignView(startLocation, rootView);

//水平方向动画
ObjectAnimator animatorX = ObjectAnimator.ofFloat(addView, "translationX", 0, moveX);
animatorX.setDuration(1000);

//竖直方向动画
ObjectAnimator animatorY = new ObjectAnimator();
animatorY.setInterpolator(new AccelerateInterpolator());
animatorY.setPropertyName("translationY");
animatorY.setTarget(addView);
animatorY.setFloatValues(0, moveY);
animatorY.setDuration(1000);

// animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
// @Override
// public void onAnimationUpdate(ValueAnimator animation) {
//
// int move = (int) animation.getAnimatedValue();
// int tempX = (int) (moveX / 300f * move);
// int tempY = (int) (moveY / 300f * move);
// addView.setTranslationX(tempX);
// addView.setTranslationY(tempY);
// }
// });
// animator.addListener(new Animator.AnimatorListener() {
// @Override
// public void onAnimationStart(Animator animation) {
//
// }
//
// @Override
// public void onAnimationEnd(Animator animation) {
//
// if (addView != null)
// rootView.removeView(addView);
// }
//
// @Override
// public void onAnimationCancel(Animator animation) {
//
// }
//
// @Override
// public void onAnimationRepeat(Animator animation) {
//
// }
// });
// animator.start();
AnimatorSet animatorSet
4000
= new AnimatorSet();
animatorSet.playTogether(animatorX, animatorY);
animatorSet.addListener(new Animator.AnimatorListener() {
@Override
public void onAnimationStart(Animator animation) {

}

@Override
public void onAnimationEnd(Animator animation) {

if (addView != null)
rootView.removeView(addView);
}

@Override
public void onAnimationCancel(Animator animation) {

}

@Override
public void onAnimationRepeat(Animator animation) {

}
});
animatorSet.start();

}

private View getAssignView(int[] startLocation, ViewGroup rootView) {
ImageView imageView = new ImageView(this);
rootView.addView(imageView);

//显示动画的图片，这里设置添加到购物车的图片
Drawable drawable = getResources().getDrawable(leftImage[leftPosition]);
FrameLayout.LayoutParams layoutParams = new FrameLayout.LayoutParams(
drawable.getMinimumWidth() * 2,
drawable.getMinimumHeight() * 2);

imageView.setImageDrawable(drawable);
layoutParams.leftMargin = startLocation[0] + 50;
layoutParams.topMargin = startLocation[1] + 50;
imageView.setLayoutParams(layoutParams);

return imageView;
}