本文主要是记录开发过程中遇到的坑
动画是为了提高交互性而在应用里增加的，单个动画的实现有好几种方式，比如
(View).animate().scaleY(0.5f).alpha(0.5f).translationX(100f).setDuration(500).start();
这是单个view属性动画的两种实现 要实现多个view 同时动画，也提供了方法 AnimatorSet，比如这样的效果
文章图片
先说坑，两个view，上面一个叫top，上移，变小；下面一个叫bottom，只有上移
首先，top 和 bottom 是两个单独的view，不能bottom里包含top，我一开始就是这么干的，结果无法实现同时动画。
上面的view黑色部分，如果没有view（view没有初始化，没有显示出来）top 在移上去后会有一个闪动，给加个背景，不让其消失就好了
android:background="@drawable/border_top"
布局文件（测试）
动画
AnimatorSet animatorSet;
int drawableId;
// 两个动画同时 TODO
protected void showDynamic(int id) {drawableId = id;
animatorSet = new AnimatorSet();
dynamicRecycleView.setVisibility(View.VISIBLE);
dynamicRecycleView.post(new Runnable() {
@Override
public void run() {
int height = dynamicRecycleView.getMeasuredHeight();
// view 移动
ObjectAnimator animator = ObjectAnimator.ofFloat(dynamicRecycleView, "translationY", height, 0f);
// 移动 + 缩小
ObjectAnimator animator1 = ObjectAnimator.ofFloat(cameraView, "translationY", -(height - 10));
ObjectAnimator animator2 = ObjectAnimator.ofFloat(bigCameraView, "scaleX", 0.73f);
ObjectAnimator animator3 = ObjectAnimator.ofFloat(bigCameraView, "scaleY", 0.73f);
// 缩放中心
bigCameraView.setPivotX(bigCameraView.getMeasuredWidth() / 2);
bigCameraView.setPivotY(bigCameraView.getMeasuredHeight());
bigCameraView.invalidate();
//显示的调用invalidateanimatorSet.play(animator1).with(animator2).with(animator3)// ;
.with(animator);
animatorSet.setDuration(600);
//animatorSet.setInterpolator(new AccelerateDecelerateInterpolator());
animatorSet.addListener(showListener);
animatorSet.start();
}
});
}Animator.AnimatorListener showListener = new Animator.AnimatorListener() {
@Override
public void onAnimationStart(Animator animation) {}@Override
public void onAnimationEnd(Animator animation) {
if(drawableId != -1) {
bigCameraView.setImageResource(drawableId);
}
}@Override
public void onAnimationCancel(Animator animation) {}@Override
public void onAnimationRepeat(Animator animation) {}
};
protected void dismissDynamic(int id) {
animatorSet = new AnimatorSet();
int height = dynamicRecycleView.getMeasuredHeight();
// 相对位置
ObjectAnimator animator = ObjectAnimator.ofFloat(dynamicRecycleView, "translationY", 0f, height);
ObjectAnimator animator1 = ObjectAnimator.ofFloat(cameraView, "translationY", -height, 0f);
ObjectAnimator animator2 = ObjectAnimator.ofFloat(bigCameraView, "scaleX", 0.73f, 1f);
ObjectAnimator animator3 = ObjectAnimator.ofFloat(bigCameraView, "scaleY", 0.73f, 1f);
animatorSet.play(animator1).with(animator2).with(animator3).with(animator);
animatorSet.setDuration(600);
animatorSet.setInterpolator(new AccelerateDecelerateInterpolator());
animatorSet.addListener(dismissListener);
animatorSet.start();
if (id != -1) {
bigCameraView.setImageResource(id);
}}Animator.AnimatorListener dismissListener = new Animator.AnimatorListener() {
@Override
public void onAnimationStart(Animator animation) {}@Override
public void onAnimationEnd(Animator animation) {
dynamicRecycleView.setVisibility(View.GONE);
}@Override
public void onAnimationCancel(Animator animation) {}@Override
public void onAnimationRepeat(Animator animation) {}
};
【android|Android之多个View同时动画】
