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【转】setAnimation和startAnimation区别

2015-11-19 13:57 246 查看
http://stackoverflow.com/questions/10909865/setanimation-vs-startanimation-in-android

/article/2402842.html

设置一个动画播放这一观点。如果你想立即播放的动画,使用startAnimation这种方法提供了允许细粒度控制的起始时间和失效,

但你必须确保:1)动画开始时间 2)动画应该开始时的观点,将被视为无效。

[java] view plaincopyprint?

<span id="result_box" lang="zh-CN"></span>

/**

* Sets the next animation to play for this view.

* If you want the animation to play immediately, use

* startAnimation. This method provides allows fine-grained

* control over the start time and invalidation, but you

* must make sure that 1) the animation has a start time set, and

* 2) the view will be invalidated when the animation is supposed to

* start.

*

* @param animation The next animation, or null.

*/

public void setAnimation(Animation animation) {

mCurrentAnimation = animation;

if (animation != null) {

animation.reset();

}

}

现在开始指定的动画。

[java] view plaincopyprint?

/**

* Start the specified animation now.

*

* @param animation the animation to start now

*/

public void startAnimation(Animation animation) {

animation.setStartTime(Animation.START_ON_FIRST_FRAME);

setAnimation(animation);

invalidateParentCaches();

invalidate(true);

}

建议使用

startAnimation来启动动画,setAnimation启动动画是需要条件的
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