给控件添加炫酷的动画效果

1.先上工具类

import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.view.View;

import java.util.ArrayList;
import java.util.List;

/**
* Created by zhengyongbo on 2017/6/15.
*/

public class AnimationUtil {
private static AnimationUtil instance;
private  List<ObjectAnimator> animators;
private  AnimatorSet mAnimatorSet;

public static AnimationUtil getInstance() {
if(null==instance) {
synchronized (AnimationUtil.class) {
if (null==instance ) {
instance = new AnimationUtil();
}
}
}
return instance;
}
public  void init() {
animators = new ArrayList<>();
mAnimatorSet = new AnimatorSet();
}

public List<ObjectAnimator> getAnimators() {
return animators;
}

// 停止动画
public void stopAnimation() {
try {
if (mAnimatorSet != null) {
mAnimatorSet.cancel();
if (animators.size() > 0) {
for (int i = 0; i < animators.size(); i++) {
animators.get(i).cancel();
}
animators.clear();
}
}
} catch (Exception e) {

}
}

/**
* target: View animators： 动画，可以是一个效果，也可以多个效果，这些效果依次顺序执行 duration：多长时间内动画执行完
* repeatCount:动画循环播放次数
*/
public void startAnimation(View target, List<ObjectAnimator> animators, long duration, int repeatCount) {
try {
if (animators.size() <= 0) {
return;
}
for (int i = 0; i < animators.size(); i++) {
// 动画效果不限，依次执行
mAnimatorSet.playTogether(animators.get(i));
// 设置动画循环播放次数
animators.get(i).setRepeatCount(repeatCount);
}
// 设置动画再多长时间内播完
mAnimatorSet.setDuration(duration);
// 开始动画
mAnimatorSet.start();
} catch (Exception e) {

}
}

}

2.使用

import android.animation.ObjectAnimator;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.ImageView;

public class MainActivity extends AppCompatActivity {
private ImageView imageView;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
imageView = (ImageView) findViewById(R.id.tv);

//      https://github.com/daimajia/AndroidViewAnimations //      根据上面的项目改编，需要的animator参数在上面查找
AnimationUtil.getInstance().init();
//       添加动画效果参数，可以是一个也可以是多个
ObjectAnimator animator = ObjectAnimator.ofFloat(imageView, "scaleX", 1, 1.25f, 0.75f, 1.15f, 1);
AnimationUtil.getInstance().getAnimators().add(an
157eb
imator);
ObjectAnimator animator1 = ObjectAnimator.ofFloat(imageView, "scaleY", 1, 0.75f, 1.25f, 0.85f, 1);
AnimationUtil.getInstance().getAnimators().add(animator1);
//      开始动画
AnimationUtil.getInstance().startAnimation(imageView,AnimationUtil.getInstance().getAnimators(), 1200, 9);

findViewById(R.id.button).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//               停止动画
AnimationUtil.getInstance().stopAnimation();
}
});
}

}