Android动画之 Tween Animation(RotateAnimation 旋转动画)

最新推荐文章于 2024-04-06 16:30:53 发布

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#animation #android #transformation #encoding #behavior #delay

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本文深入解析Android RotateAnimation的配置方法及其实现步骤，包括XML文件配置和代码启动动画的过程，同时提供了关键属性设置的指导，帮助开发者高效地应用此动画效果。

public class

RotateAnimation

extends Animation

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

一、配置xml文件

<?xml version="1.0" encoding="utf-8"?>
<rotate xmlns:android="http://schemas.android.com/apk/res/android"
	android:fromDegrees="0.0"
	android:toDegrees="360.0"
	android:repeatCount="20"
	android:duration="500"
	android:pivotX="160.0"
	android:pivotY="240.0"
>
</rotate>

fromDegrees 起始图片的角度

toDegrees 结束时图片的角度

pivotX pivotY 旋转的环绕坐标

二、开启动画

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

附：animation公共属性设置

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.