FATAL EXCEPTION: Timer-0 java.lang.IllegalArgumentException

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#exception #playback #timer #video

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本文记录了一次在Android设备上进行视频播放时遇到的错误，该错误与SurfaceView和MediaPlayer有关，具体表现为IllegalArgumentException异常。文章探讨了两种可能的原因：一是由于Android版本升级导致的问题；二是关于如何正确使用Timer及避免在UI线程中执行长时间任务的方法。

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描述：

01-21 07:00:40.523: E/AndroidRuntime(717): FATAL EXCEPTION: Timer-0

01-21 07:00:40.523: E/AndroidRuntime(717): java.lang.IllegalArgumentException

01-21 07:00:40.523: E/AndroidRuntime(717): at android.view.Surface.unlockCanvasAndPost(Native Method)

01-21 07:00:40.523: E/AndroidRuntime(717): at android.view.SurfaceView$3.unlockCanvasAndPost(SurfaceView.java:793)

01-21 07:00:40.523: E/AndroidRuntime(717): at com.testSurfaceView.TestSurfaceView.SimpleDraw(TestSurfaceView.java:217)

01-21 07:00:40.523: E/AndroidRuntime(717): at com.testSurfaceView.TestSurfaceView$MyTimerTask.run(TestSurfaceView.java:163)

01-21 07:00:40.523: E/AndroidRuntime(717): at java.util.Timer$TimerImpl.run(Timer.java:284)

搜索到的解释：

(1) 版本问题

Iam getting this error at the time of video playback and the platform
is Moto Droid with Froyo. Have to tell you, this has started ever
since my Droid got upgraded to 2.2.

(2) timer和AndroidUI的操作问题

KK wrote:

> hi,

> Seems the logcat

>> 11-26 13:32:06.727: ERROR/AndroidRuntime(10779): FATAL EXCEPTION: Timer-0

> 11-26 13:32:06.727: ERROR/AndroidRuntime(10779):> java.lang.IllegalStateException

> 11-26 13:32:06.727: ERROR/AndroidRuntime(10779): at> android.media.MediaPlayer.getCurrentPosition(Native Method)

> 11-26 13:32:06.727: ERROR/AndroidRuntime(10779): at> com.infineon.musicplayer4mNet.MusicPlayerActivity$2.run(MusicPlayerActivity.java:174)

> 11-26 13:32:06.727: ERROR/AndroidRuntime(10779): at> java.util.Timer$TimerImpl.run(Timer.java:284)

>>Try to cancel() the timer before releazing media player. Also try to avoid Timer/TimerTask, use Handler insteadpskink.

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