Android动画 之 Tween Animation(ScaleAnimation 大小渐变)

public class

ScaleAnimation

extends Animation

java.lang.Object
↳	android.view.animation.Animation
	↳	android.view.animation.ScaleAnimation

 

一、创建xml配置文件

<?xml version="1.0" encoding="utf-8"?>
<scale xmlns:android="http://schemas.android.com/apk/res/android"
	android:fromXScale="0.0"
	android:toXScale="1.0"
	android:fromYScale="0.0"
	android:toYScale="1.0"
	android:duration="500"
	android:fillAfter="true"
	android:repeatCount="20"
>
</scale>

二、开启动画（Tween Animation开启基本一致）

iv_show = (ImageView) findViewById(R.id.iv_show);
final ScaleAnimation aa = (ScaleAnimation) AnimationUtils
	.loadAnimation(this, R.anim.anim_scale);
iv_show.startAnimation(aa);

附：动画属性设置

From class android.view.animation.Animation

Attribute Name	Related Method	Description
android:detachWallpaper	setDetachWallpaper(boolean)	Special option for window animations: if this window is on top of a wallpaper, don't animate the wallpaper with it.
android:duration	setDuration(long)	Amount of time (in milliseconds) for the animation to run.
android:fillAfter	setFillAfter(boolean)	When set to true, the animation transformation is applied after the animation is over.
android:fillBefore	setFillBefore(boolean)	When set to true, the animation transformation is applied before the animation has started.
android:fillEnabled	setFillEnabled(boolean)	When set to true, fillAfter is taken into account.
android:interpolator	setInterpolator(Interpolator)	Defines the interpolator used to smooth the animation movement in time.
android:repeatCount	setRepeatCount(int)	Defines how many times the animation should repeat.
android:repeatMode	setRepeatMode(int)	Defines the animation behavior when it reaches the end and the repeat count is greater than 0 or infinite.
android:startOffset	setStartOffset(long)	Delay in milliseconds before the animation runs, once start time is reached.
android:zAdjustment	setZAdjustment(int)	Allows for an adjustment of the Z ordering of the content being animated for the duration of the animation.