protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState)
;
setContentView(R.layout.
activity_main)
;
icon = (ImageView) findViewById(R.id.cion)
;
container = (LinearLayout) findViewById(R.id.container)
;
}
public void onClick(View v) {
//属性动画 ValueAnimator 的用法 ,属性动画本质是值动画
// ValueAnimator valueAnimator = ValueAnimator.ofFloat(0f, 1f);
// valueAnimator.setDuration(2000);
// valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
// @Override
// public void onAnimationUpdate(ValueAnimator animation) {
// float animatedValue = (float) animation.getAnimatedValue();
// Log.e("TAG", "=========== animatedValue == " + animatedValue);
// ViewGroup.LayoutParams layoutParams = icon.getLayoutParams();
// layoutParams.width = (int) (animatedValue * 1000);
// layoutParams.height = (int) (animatedValue * 1000);
// icon.setLayoutParams(layoutParams);
// icon.setAlpha(animatedValue);
// }
// });
// valueAnimator.start();
//ObjectAnimator的用法
//透明度变化
// ObjectAnimator alphaObjectAnimator = ObjectAnimator.ofFloat(icon, "alpha", 0f, 1f, 0.5f);
// alphaObjectAnimator.setDuration(2000)
// .start();
//
// ObjectAnimator scaleXObjectAnimator = ObjectAnimator.ofFloat(icon, "scaleX",0f,1f,0.5f);
// scaleXObjectAnimator.setDuration(2000)
// .start();
//
// ObjectAnimator translationXObjectAnimator = ObjectAnimator.ofFloat(icon, "translationX",0f,1000f);
// translationXObjectAnimator.setDuration(2000)
// .start();
//
// ObjectAnimator rotationObjectAnimator = ObjectAnimator.ofFloat(icon, "rotation",0f,-360f);
// rotationObjectAnimator.setDuration(2000);
// rotationObjectAnimator.setRepeatCount(3);
// rotationObjectAnimator.setRepeatMode(ValueAnimator.REVERSE);
// rotationObjectAnimator.addListener(new Animator.AnimatorListener() {
// @Override
// public void onAnimationStart(Animator animation) {
//
// }
//
// @Override
// public void onAnimationEnd(Animator animation) {
//
// }
//
// @Override
// public void onAnimationCancel(Animator animation) {
//
// }
//
// @Override
// public void onAnimationRepeat(Animator animation) {
//
// }
// });
// rotationObjectAnimator.start();
//ViewPropertyAnimator的用法
// icon.animate().alpha(0.5f)
// .translationX(100f)
// .rotation(180)
// .scaleX(2)
// .scaleY(2)
// .setStartDelay(2000)
// .setDuration(3000);
//AnimatorSet 组合动画
// AnimatorSet animatorSet = new AnimatorSet();
// ObjectAnimator alphaObjectAnimator = ObjectAnimator.ofFloat(icon, "alpha", 0f, 1f, 0.5f);
// ObjectAnimator scaleXObjectAnimator = ObjectAnimator.ofFloat(icon, "scaleX", 0f, 1f, 0.5f);
// animatorSet.play(alphaObjectAnimator).with(scaleXObjectAnimator);
// animatorSet.playTogether(alphaObjectAnimator,scaleXObjectAnimator);
// animatorSet.playSequentially(alphaObjectAnimator, scaleXObjectAnimator);
// animatorSet.setDuration(3000);
// animatorSet.start();
//ObjectAnimator也可以来实现组合动画
// PropertyValuesHolder alphaXPropertyValuesHolder = PropertyValuesHolder.ofFloat("alpha", 0f, 1f, 0.5f);
// PropertyValuesHolder scaleXPropertyValuesHolder = PropertyValuesHolder.ofFloat("scaleX", 1f, 2f);
// ObjectAnimator rotationObjectAnimator = ObjectAnimator.ofPropertyValuesHolder(icon, alphaXPropertyValuesHolder, scaleXPropertyValuesHolder);
// rotationObjectAnimator.setDuration(2000);
// rotationObjectAnimator.start();
//用valueAnimator实现组合动画
// ValueAnimator valueAnimator = ValueAnimator.ofFloat(0f, 1f);
// valueAnimator.setDuration(2000);
// valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
// @Override
// public void onAnimationUpdate(ValueAnimator animation) {
// float animatedValue = (float) animation.getAnimatedValue();
// ViewGroup.LayoutParams layoutParams = icon.getLayoutParams();
// layoutParams.width = (int) (animatedValue * 300);
// layoutParams.height = (int) (animatedValue * 300);
// icon.setLayoutParams(layoutParams);
// icon.setAlpha(animatedValue);
// }
// });
// valueAnimator.start();
//用AnimatorInflater去加载ValueAnimator对应的xml文件
// ValueAnimator valueAnimator = (ValueAnimator)AnimatorInflater.loadAnimator(this, R.animator.value_animator);
// valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
// @Override
// public void onAnimationUpdate(ValueAnimator animation) {
// float animatedValue = (float) animation.getAnimatedValue();
// icon.setAlpha(animatedValue);
// }
// });
// valueAnimator.setDuration(3000);
// valueAnimator.start();
//用AnimatorInflater去加载ObjectAnimator对应的xml文件
// ObjectAnimator objectAnimator = (ObjectAnimator)AnimatorInflater.loadAnimator(this, R.animator.object_animator);
// objectAnimator.setDuration(3000);
// objectAnimator.setTarget(icon);
// objectAnimator.start();
//用AnimatorInflater去加载AnimatorSet对应的xml文件
// Animator animator = AnimatorInflater.loadAnimator(this, R.animator.animator_set);
// animator.setTarget(icon);
// animator.start();
//利用ValueAnimator进行颜色变化动画
// ValueAnimator valueAnimator;
// if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP) {
// valueAnimator = ValueAnimator.ofArgb(0xffff0000, 0xff0000ff, 0xff00ff00);
// valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
// @Override
// public void onAnimationUpdate(ValueAnimator animation) {
// int colorValue = (int) animation.getAnimatedValue();
// container.setBackgroundColor(colorValue);
// }
// });
// valueAnimator.setDuration(2000);
// valueAnimator.start();
// }
Point startPoint =
new Point(
0, 0)
;
Point endPoint =
new Point(
1000, 1000)
;
//fraction是一个从0到1变化的值
ValueAnimator valueAnimator = ValueAnimator.ofObject(
new TypeEvaluator<Point>() {
@Override
public Point
evaluate(
float fraction
, Point startValue
, Point endValue) {
float startX = startValue.getX()
;
float endX = endValue.getX()
;
float currentX = startX + fraction * (endX - startX)
;
float startY = startValue.getY()
;
float endY = endValue.getY()
;
float currentY = startY + fraction * (endY - startY)
;
return new Point(currentX
, currentY)
;
}
}
, startPoint
, endPoint)
;
valueAnimator.addUpdateListener(
new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
Point point = (Point) animation.getAnimatedValue()
;
}
})
;
}
}
