这两天查cts 的fail， android.animation中有3个fail。

分别为testCurrentPlayTime，testCancel，testSetCurrentPlayTime，在此对着三个fail我的跟踪解析情况做一说明。

1.      testCancel：如前一封mail说的，是testCode本身有点问题，后来我改了testcode验证：按照4.1的写法，我写了脚本跑整个包10遍，测了两遍脚本，相当于20遍，未重现。注：按ICS的testcode，跑完10遍这个会fail2～3遍的。

2.      testCurrentPlayTime：其测试用例如下：

public void testCurrentPlayTime()throws Throwable {

startAnimation(mValueAnimator);

Thread.sleep(200);

这里的值原来是100，我改成了200进行测试，也是用刚才的脚本共跑了20遍未出错。

long currentPlayTime = mValueAnimator.getCurrentPlayTime();

assertTrue(currentPlayTime  >  0);

}

我简单说明为什么我把上面的100改成了200就ok了。因为startAnimation(mValueAnimator);会在UI线程去调用\framework\base\core\java\android\animation\ValueAnimator.java中的start函数，这个函数会进行一系列的处理，包括发送消息出去等。

mValueAnimator.getCurrentPlayTime();这个函数如下：    public long getCurrentPlayTime() {

if(!mInitialized) Log.d(TAG,"mInitialized is false!!!");

if(mPlayingState ==STOPPED) Log.d(TAG, "mPlayingState == STOPPED!!!");

if (!mInitialized || mPlayingState ==STOPPED) {

Log.d(TAG,"getCurrentPlayTime");

return 0;

}

longcurrentTime=AnimationUtils.currentAnimationTimeMillis();

Log.d(TAG,"getCurrentPlayTime,currentTime is "+currentTime);

return currentTime - mStartTime;

}

其中的mPlayingState如果是STOPPED的话，就会返回0.而这个mPlayingState的初始值是STOPPED，是在上面所说的start函数中会发消息出去，然后有handler去处理。如果在100ms内处理的话，就不会fail，但是若getCurrentPlayTime在处理完之前调用，就会得到0，所以就fail。

错误时打的log：(getCurrentPlayTime在handleMessage之前)

D/ValueAnimator( 3336):  animationHandler.sendEmptyMessage(ANIMATION_START)

D/ValueAnimator( 3336): Start the animation playing

D/ValueAnimator( 3336):  This sets the initial value of the animation, prior to actually starting it running

D/ValueAnimator( 3336): mInitialized is false!!!

D/ValueAnimator( 3336): mPlayingState == STOPPED!!!

D/ValueAnimator( 3336): getCurrentPlayTime

D/ValueAnimator( 3336): setCurrentPlayTime!!!currentTime is 4215917

D/ValueAnimator( 3336): before animationFrame-----------mStartTime is 4215917

D/ValueAnimator( 3336): after animationFrame-----------mStartTime is 4215917

D/ValueAnimator( 3336):  onAnimationStart

D/ValueAnimator( 3336):  animationHandler.sendEmptyMessage(ANIMATION_START)

I/TAG     ( 1828): sync time from stream----------------------@@@

D/ValueAnimator( 3336): mPlayingState == STOPPED!!!

D/ValueAnimator( 3336): getCurrentPlayTime

D/ValueAnimator( 3336): handleMessage:ANIMATION_START

D/ValueAnimator( 3336): startAnimation----Called internally to start an animation by adding it to the active animations list. Must be called on the UI thread

D/ValueAnimator( 3336): anim.startAnimation-----------

D/ValueAnimator( 3336): startAnimation----Called internally to start an animation by adding it to the active animations list. Must be called on the UI thread

D/ValueAnimator( 3336): anim.startAnimation-----------

D/ValueAnimator( 3336): handleMessage:ANIMATION_START

正确时打的log：(getCurrentPlayTime在handleMessage之后)

D/ValueAnimator( 3305):  animationHandler.sendEmptyMessage(ANIMATION_START)

D/ValueAnimator( 3305): Start the animation playing

D/ValueAnimator( 3305):  This sets the initial value of the animation, prior to actually starting it running

D/ValueAnimator( 3305): mInitialized is false!!!

D/ValueAnimator( 3305): mPlayingState == STOPPED!!!

D/ValueAnimator( 3305): getCurrentPlayTime

D/ValueAnimator( 3305): setCurrentPlayTime!!!currentTime is 4213321

D/ValueAnimator( 3305): before animationFrame-----------mStartTime is 4213321

D/ValueAnimator( 3305): after animationFrame-----------mStartTime is 4213321

D/ValueAnimator( 3305):  onAnimationStart

D/ValueAnimator( 3305):  animationHandler.sendEmptyMessage(ANIMATION_START)

D/ValueAnimator( 3305): handleMessage:ANIMATION_START

D/ValueAnimator( 3305): startAnimation----Called internally to start an animation by adding it to the active animations list. Must be called on the UI thread

D/ValueAnimator( 3305): anim.startAnimation-----------

D/ValueAnimator( 3305): startAnimation----Called internally to start an animation by adding it to the active animations list. Must be called on the UI thread

D/ValueAnimator( 3305): anim.startAnimation-----------

D/ValueAnimator( 3305): handleMessage:ANIMATION_S