應用程序myapp（process com.example.package）已經意外停止，請再試一次

Question

我的android應用程序有很多麻煩。它不能運行，但現在我能做到，不幸的是，我收到錯誤消息」應用的myapp（過程com.example.package）已意外停止，請重試） 這裏是我的日誌文件

12-02 11:25:11.980: E/MediaPlayer(278): Unable to to create media player 
12-02 11:25:12.290: D/MediaPlayer(278): create failed: 
12-02 11:25:12.290: D/MediaPlayer(278): java.io.IOException: setDataSourceFD failed.: status=0x80000000 
12-02 11:25:12.290: D/MediaPlayer(278):  at android.media.MediaPlayer.setDataSource(Native Method) 
12-02 11:25:12.290: D/MediaPlayer(278):  at android.media.MediaPlayer.create(MediaPlayer.java:645) 
12-02 11:25:12.290: D/MediaPlayer(278):  at com.mohammed.watzIslam.Mymain.onCreate(Mymain.java:27) 
12-02 11:25:12.290: D/MediaPlayer(278):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 
12-02 11:25:12.290: D/MediaPlayer(278):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627) 
12-02 11:25:12.290: D/MediaPlayer(278):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679) 
12-02 11:25:12.290: D/MediaPlayer(278):  at android.app.ActivityThread.access$2300(ActivityThread.java:125) 
12-02 11:25:12.290: D/MediaPlayer(278):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033) 
12-02 11:25:12.290: D/MediaPlayer(278):  at android.os.Handler.dispatchMessage(Handler.java:99) 
12-02 11:25:12.290: D/MediaPlayer(278):  at android.os.Looper.loop(Looper.java:123) 
12-02 11:25:12.290: D/MediaPlayer(278):  at android.app.ActivityThread.main(ActivityThread.java:4627) 
12-02 11:25:12.290: D/MediaPlayer(278):  at java.lang.reflect.Method.invokeNative(Native Method) 
12-02 11:25:12.290: D/MediaPlayer(278):  at java.lang.reflect.Method.invoke(Method.java:521) 
12-02 11:25:12.290: D/MediaPlayer(278):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 
12-02 11:25:12.290: D/MediaPlayer(278):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 
12-02 11:25:12.290: D/MediaPlayer(278):  at dalvik.system.NativeStart.main(Native Method) 
12-02 11:25:12.290: D/AndroidRuntime(278): Shutting down VM 
12-02 11:25:12.290: W/dalvikvm(278): threadid=1: thread exiting with uncaught exception (group=0x4001d800) 
12-02 11:25:12.300: E/AndroidRuntime(278): FATAL EXCEPTION: main 
12-02 11:25:12.300: E/AndroidRuntime(278): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.mohammed.watzIslam/com.mohammed.watzIslam.Mymain}: java.lang.NullPointerException 
12-02 11:25:12.300: E/AndroidRuntime(278): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663) 
12-02 11:25:12.300: E/AndroidRuntime(278): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679) 
12-02 11:25:12.300: E/AndroidRuntime(278): at android.app.ActivityThread.access$2300(ActivityThread.java:125) 
12-02 11:25:12.300: E/AndroidRuntime(278): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033) 
12-02 11:25:12.300: E/AndroidRuntime(278): at android.os.Handler.dispatchMessage(Handler.java:99) 
12-02 11:25:12.300: E/AndroidRuntime(278): at android.os.Looper.loop(Looper.java:123) 
12-02 11:25:12.300: E/AndroidRuntime(278): at android.app.ActivityThread.main(ActivityThread.java:4627) 
12-02 11:25:12.300: E/AndroidRuntime(278): at java.lang.reflect.Method.invokeNative(Native Method) 
12-02 11:25:12.300: E/AndroidRuntime(278): at java.lang.reflect.Method.invoke(Method.java:521) 
12-02 11:25:12.300: E/AndroidRuntime(278): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 
12-02 11:25:12.300: E/AndroidRuntime(278): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 
12-02 11:25:12.300: E/AndroidRuntime(278): at dalvik.system.NativeStart.main(Native Method) 
12-02 11:25:12.300: E/AndroidRuntime(278): Caused by: java.lang.NullPointerException 
12-02 11:25:12.300: E/AndroidRuntime(278): at com.mohammed.watzIslam.Mymain.onCreate(Mymain.java:28) 
12-02 11:25:12.300: E/AndroidRuntime(278): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 
12-02 11:25:12.300: E/AndroidRuntime(278): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627) 
12-02 11:25:12.300: E/AndroidRuntime(278): ... 11 more 

Answer 1

12-02 11:25:11.980: E/MediaPlayer(278): Unable to to create media player 
12-02 11:25:12.290: D/MediaPlayer(278): create failed: 
12-02 11:25:12.290: D/MediaPlayer(278): java.io.IOException: setDataSourceFD failed.: status=0x80000000 
12-02 11:25:12.290: D/MediaPlayer(278):  at android.media.MediaPlayer.setDataSource(Native Method) 

我的猜測是，你試圖加載媒體文件，該文件不存在，或文件名就是不正確。