Question

我发现了几个相关问题，但找不到我的具体问题的答案。

我试图发起视频活动，播放下载到SD卡的视频。它会抛出一个错误，说'＃34;无法播放此视频＆＃34;。当我在没有应用程序的情况下启动视频时它可以正常播放。

我在这里创建活动：

VideoView mVideoView;

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.videoview);

    Intent intent = getIntent();
    String url = intent.getStringExtra(MainActivity.EXTRA_MESSAGE);
    setJsonData(url);
    Log.d("URL VID",url);
    Uri uri = Uri.parse(url); //Declare your url here.
    mVideoView = (VideoView) findViewById(R.id.videoview);
    mVideoView.setVideoURI(uri);
    MediaController vidControl = new MediaController(this);
    vidControl.setAnchorView(mVideoView);
    mVideoView.setMediaController(vidControl);
    mVideoView.requestFocus();
    mVideoView.start();
}

当我这样做时，在尝试启动视频后出现此错误：

06-19 16:57:24.921 26033-26033/com.csform.android.uiapptemplate W/VideoView: Unable to open content: /storage/emulated/0/Nokia%20AirFrame.mp4
java.io.IOException: setDataSource failed.
    at android.media.MediaPlayer.setDataSource(MediaPlayer.java:1120)
    at android.media.MediaPlayer.setDataSource(MediaPlayer.java:1066)
    at android.media.MediaPlayer.setDataSource(MediaPlayer.java:1003)
    at android.widget.VideoView.openVideo(VideoView.java:437)
    at android.widget.VideoView$7.surfaceCreated(VideoView.java:742)
    at android.view.SurfaceView.updateWindow(SurfaceView.java:730)
    at android.view.SurfaceView$3.onPreDraw(SurfaceView.java:211)
    at android.view.ViewTreeObserver.dispatchOnPreDraw(ViewTreeObserver.java:944)
    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2420)
    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1324)
    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6712)
    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:894)
    at android.view.Choreographer.doCallbacks(Choreographer.java:696)
    at android.view.Choreographer.doFrame(Choreographer.java:631)
    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:880)
    at android.os.Handler.handleCallback(Handler.java:815)
    at android.os.Handler.dispatchMessage(Handler.java:104)
    at android.os.Looper.loop(Looper.java:207)
    at android.app.ActivityThread.main(ActivityThread.java:5728)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:679)

我的权限设置如下：

  <uses-permission android:name="android.permission.INTERNET" />
  <uses-permission android:name="android.permission.CAMERA" />
  <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
  <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
  <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
  <uses-permission android:name="android.permission.WAKE_LOCK" />

Answer 1

mVideoView.setVideoURI(uri);方法需要由mVideoView.setVideoPath(uri);方法替换。此处uri指定SDCARD上的视频文件的路径。

当我们想要从setVideoURI加载视频时，

SDCARD无效，您必须使用setVideoPath。 setVideoURI仅适用于来自互联网的视频流。

Answer 2

这似乎是一个文件名问题。我更改了名称，因此它不再有空格或大写字符，错误消失了，我可以播放视频。

Android说＆＃34;无法播放此视频＆＃34;尝试从本地存储启动mp4时

2 个答案: