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我在這個問題上工作了一個星期，但沒有找到任何。請幫幫我。任何人。一切都很受歡迎。 應用程序運行，播放第一個視頻，然後崩潰。它可以在模擬器（andoid 3.2）中正常工作，HTC手機與android 2.3，但在Android 2.2的Dreambook w7上崩潰。視頻完成後媒體播放器崩潰
我建議這是因爲Android 2.2版和更高版本之間的VideoView類有所不同。可能有人知道我在哪裏可以找到VideoView源代碼？我會將其納入我的項目。或者可能有一些開源視頻播放器，不基於VideoView？
這裏是我的代碼：
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFormat(PixelFormat.TRANSLUCENT);
setContentView(R.layout.main);
video=(VideoView)findViewById(R.id.video);
/*some code for downloading playlist and missed videos here*/
/*Then, launches some background theards for updating tham*/
/*Then, downloading some picture from URL and setting it to image view*/
/*Then, setting up another background theard for setting current time to text view*/
//So, here is player:
File clip=new File(Environment.getExternalStorageDirectory(),
playList[FLcurrentVideo].substring(2, playList[FLcurrentVideo].length()-1)+".mp4");
if (FLReady[FLcurrentVideo]==1) {
video.setVideoPath(clip.getAbsolutePath());
video.requestFocus();
video.start();
sendLog(); //send some info to web server
}
else { //if video didn't exists
if (FLReady[FLcurrentVideo] == 0) {
new CheckOutVideos(false).execute(FLcurrentVideo);
}
}
/*Setting completion, for starting play next video after previous done...*/
video.setOnCompletionListener(new OnCompletionListener(){
@Override
public void onCompletion(MediaPlayer mp) {
Log.d ("111", "on Completion"); //... but, this NEVER colled
int FL = 1;
while (FL == 1) {
if (FLcurrentVideo<count-1) FLcurrentVideo++;
else FLcurrentVideo = 0;
File clip=new File(Environment.getExternalStorageDirectory(),
playList[FLcurrentVideo].substring(2, playList[FLcurrentVideo].length()-1)+".mp4");
if (FLReady[FLcurrentVideo]==1) {
FL=0;
video=(VideoView)findViewById(R.id.video);
video.setVideoPath(clip.getAbsolutePath());
video.requestFocus();
video.start();
}
else {
FL = 1;
if (FLReady[FLcurrentVideo] == 0) {
new CheckOutVideos(false).execute(FLcurrentVideo);
}
}
}
}
});
}
有 「空指針異常」 高林OnCompletion後：
09-22 11:50:54.553: ERROR/AndroidRuntime(4529): FATAL EXCEPTION: main
09-22 11:50:54.553: ERROR/AndroidRuntime(4529): java.lang.NullPointerException
09-22 11:50:54.553: ERROR/AndroidRuntime(4529): at android.widget.VideoView$3.onCompletion(VideoView.java:347)
09-22 11:50:54.553: ERROR/AndroidRuntime(4529): at android.media.MediaPlayer$EventHandler.handleMessage(MediaPlayer.java:1304)
09-22 11:50:54.553: ERROR/AndroidRuntime(4529): at android.os.Handler.dispatchMessage(Handler.java:99)
09-22 11:50:54.553: ERROR/AndroidRuntime(4529): at android.os.Looper.loop(Looper.java:123)
09-22 11:50:54.553: ERROR/AndroidRuntime(4529): at android.app.ActivityThread.main(ActivityThread.java:4627)
09-22 11:50:54.553: ERROR/AndroidRuntime(4529): at java.lang.reflect.Method.invokeNative(Native Method)
09-22 11:50:54.553: ERROR/AndroidRuntime(4529): at java.lang.reflect.Method.invoke(Method.java:521)
09-22 11:50:54.553: ERROR/AndroidRuntime(4529): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
09-22 11:50:54.553: ERROR/AndroidRuntime(4529): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
09-22 11:50:54.553: ERROR/AndroidRuntime(4529): at dalvik.system.NativeStart.main(Native Method)