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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應用程序myapp（process com.example.package）已經意外停止，請再試一次
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
發佈您的代碼的一部分，導致該錯誤 – jcw
我怎麼能知道哪一個。 ...因爲在問題標籤我沒有錯誤 – user1794499
行28在Mymain.java - 引起：java.lang.NullPointerException 12-02 11：25：12.300：E/AndroidRuntime（278）：在com.mohammed.watzIslam.Mymain.onCreate（Mymain.java:28）請發佈您的onCreate（） – Simon