這兩天查cts 的fail， android.animation中有3個fail。

分別為testCurrentPlayTime，testCancel，testSetCurrentPlayTime，在此對著三個fail我的跟蹤解析情況做一說明。

1.??????testCancel：如前一封mail說的，是testCode本身有點問題，后來我改了testcode驗證：按照4.1的寫法，我寫了腳本跑整個包10遍，測了兩遍腳本，相當于20遍，未重現。注：按ICS的testcode，跑完10遍這個會fail2～3遍的。

2.??????testCurrentPlayTime：其測試用例如下：

public void testCurrentPlayTime()throws Throwable {

startAnimation(mValueAnimator);

Thread.sleep(200);

這里的值原來是100，我改成了200進行測試，也是用剛才的腳本共跑了20遍未出錯。

long currentPlayTime = mValueAnimator.getCurrentPlayTime();

assertTrue(currentPlayTime? >? 0);

}

我簡單說明為什么我把上面的100改成了200就ok了。因為startAnimation(mValueAnimator);會在UI線程去調用\framework\base\core\java\android\animation\ValueAnimator.java中的start函數，這個函數會進行一系列的處理，包括發送消息出去等。

mValueAnimator.getCurrentPlayTime();這個函數如下：?? ?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的話，就會返回0.而這個mPlayingState的初始值是STOPPED，是在上面所說的start函數中會發消息出去，然后有handler去處理。如果在100ms內處理的話，就不會fail，但是若getCurrentPlayTime在處理完之前調用，就會得到0，所以就fail。

錯誤時打的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

正確時打的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

總結

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