我无法播放来自URL的视频

我已经制作了一个应用程序，它可以从解析JSON中填充listview，当我点击listview时，新的活动完全打开，我想从前一个活动中获得的所有变量都被传输并显示目前的活动无懈可击，但视频不播放。我无法播放来自URL的视频

这里是日志猫;

10-28 15:01:01.547: V/VideoViewDemo(18257): path: http://www.example.com/mov.wmv 
10-28 15:01:01.597: E/VideoViewDemo(18257): error: null 
10-28 15:01:01.597: E/VideoViewDemo(18257): android.os.NetworkOnMainThreadException 
10-28 15:01:01.597: E/VideoViewDemo(18257):  at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1118) 
10-28 15:01:01.597: E/VideoViewDemo(18257):  at java.net.InetAddress.lookupHostByName(InetAddress.java:385) 
10-28 15:01:01.597: E/VideoViewDemo(18257):  at java.net.InetAddress.getAllByNameImpl(InetAddress.java:236) 
10-28 15:01:01.597: E/VideoViewDemo(18257):  at java.net.InetAddress.getAllByName(InetAddress.java:214) 
10-28 15:01:01.597: E/VideoViewDemo(18257):  at libcore.net.http.HttpConnection.<init>(HttpConnection.java:70) 
10-28 15:01:01.597: E/VideoViewDemo(18257):  at libcore.net.http.HttpConnection.<init>(HttpConnection.java:50) 
10-28 15:01:01.597: E/VideoViewDemo(18257):  at libcore.net.http.HttpConnection$Address.connect(HttpConnection.java:340) 
10-28 15:01:01.597: E/VideoViewDemo(18257):  at libcore.net.http.HttpConnectionPool.get(HttpConnectionPool.java:87) 
10-28 15:01:01.597: E/VideoViewDemo(18257):  at libcore.net.http.HttpConnection.connect(HttpConnection.java:128) 
10-28 15:01:01.597: E/VideoViewDemo(18257):  at libcore.net.http.HttpEngine.openSocketConnection(HttpEngine.java:315) 
10-28 15:01:01.597: E/VideoViewDemo(18257):  at libcore.net.http.HttpEngine.connect(HttpEngine.java:310) 
10-28 15:01:01.597: E/VideoViewDemo(18257):  at libcore.net.http.HttpEngine.sendSocketRequest(HttpEngine.java:289) 
10-28 15:01:01.597: E/VideoViewDemo(18257):  at libcore.net.http.HttpEngine.sendRequest(HttpEngine.java:239) 
10-28 15:01:01.597: E/VideoViewDemo(18257):  at libcore.net.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:80) 
10-28 15:01:01.597: E/VideoViewDemo(18257):  at info.androidhive.jsonparsing.VideoViewDemo.getDataSource(VideoViewDemo.java:143) 
10-28 15:01:01.597: E/VideoViewDemo(18257):  at info.androidhive.jsonparsing.VideoViewDemo.playVideo(VideoViewDemo.java:124) 
10-28 15:01:01.597: E/VideoViewDemo(18257):  at info.androidhive.jsonparsing.VideoViewDemo.access$0(VideoViewDemo.java:108) 
10-28 15:01:01.597: E/VideoViewDemo(18257):  at info.androidhive.jsonparsing.VideoViewDemo$5.run(VideoViewDemo.java:101) 
10-28 15:01:01.597: E/VideoViewDemo(18257):  at android.app.Activity.runOnUiThread(Activity.java:4755) 
10-28 15:01:01.597: E/VideoViewDemo(18257):  at info.androidhive.jsonparsing.VideoViewDemo.onCreate(VideoViewDemo.java:99) 
10-28 15:01:01.597: E/VideoViewDemo(18257):  at android.app.Activity.performCreate(Activity.java:5177) 
10-28 15:01:01.597: E/VideoViewDemo(18257):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1094) 
10-28 15:01:01.597: E/VideoViewDemo(18257):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2074) 
10-28 15:01:01.597: E/VideoViewDemo(18257):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2135) 
10-28 15:01:01.597: E/VideoViewDemo(18257):  at android.app.ActivityThread.access$700(ActivityThread.java:143) 
10-28 15:01:01.597: E/VideoViewDemo(18257):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1241) 
10-28 15:01:01.597: E/VideoViewDemo(18257):  at android.os.Handler.dispatchMessage(Handler.java:99) 
10-28 15:01:01.597: E/VideoViewDemo(18257):  at android.os.Looper.loop(Looper.java:137) 
10-28 15:01:01.597: E/VideoViewDemo(18257):  at android.app.ActivityThread.main(ActivityThread.java:4950) 
10-28 15:01:01.597: E/VideoViewDemo(18257):  at java.lang.reflect.Method.invokeNative(Native Method) 
10-28 15:01:01.597: E/VideoViewDemo(18257):  at java.lang.reflect.Method.invoke(Method.java:511) 
10-28 15:01:01.597: E/VideoViewDemo(18257):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1004) 
10-28 15:01:01.597: E/VideoViewDemo(18257):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:771) 
10-28 15:01:01.597: E/VideoViewDemo(18257):  at dalvik.system.NativeStart.main(Native Method) 
10-28 15:01:01.627: D/dalvikvm(18257): GC_CONCURRENT freed 292K, 15% free 9978K/11651K, paused 15ms+35ms, total 179ms 
10-28 15:01:01.727: I/Adreno200-EGLSUB(18257): <ConfigWindowMatch:2087>: Format RGBA_8888. 
10-28 15:01:01.897: E/SpannableStringBuilder(18257): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length 
10-28 15:01:01.897: E/SpannableStringBuilder(18257): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length

这是我的课;

package info.androidhive.jsonparsing; 

import java.io.File; 
import java.io.FileOutputStream; 
import java.io.IOException; 
import java.io.InputStream; 
import java.net.URL; 
import java.net.URLConnection; 
import android.app.Activity; 
import android.content.Intent; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.webkit.URLUtil; 
import android.widget.EditText; 
import android.widget.ImageButton; 
import android.widget.TextView; 
import android.widget.Toast; 
import android.widget.VideoView; 

public class VideoViewDemo extends Activity { 
    private static final String TAG = "VideoViewDemo"; 

private VideoView mVideoView; 
private EditText mPath; 
private ImageButton mPlay; 
private ImageButton mPause; 
private ImageButton mReset; 
private ImageButton mStop; 
private String current; 
private static final String TAG_NAME = "name"; 
private static final String TAG_EMAIL = "email"; 
private static final String TAG_PHONE_MOBILE = "mobile"; 
@Override 
public void onCreate(Bundle icicle) { 
    super.onCreate(icicle); 
    setContentView(R.layout.main); 
    mVideoView = (VideoView) findViewById(R.id.surface_view); 
    // getting intent data 
    Intent in = getIntent(); 

    // Get JSON values from previous intent 
    String name = in.getStringExtra(TAG_NAME); 
    String email = in.getStringExtra(TAG_EMAIL); 
    String mobile = in.getStringExtra(TAG_PHONE_MOBILE); 

    // Displaying all values on the screen 
    // TextView lblName = (TextView) findViewById(R.id.name_label); 
    TextView lblEmail = (TextView) findViewById(R.id.email_label); 
    TextView lblMobile = (TextView) findViewById(R.id.mobile_label); 

    // lblName.setText(name); 
    lblEmail.setText(email); 
    lblMobile.setText(mobile); 

    mPath = (EditText) findViewById(R.id.path); 
    mPath.setText(name); 

    // mPath.setText("http://daily3gp.com/vids/747.3gp"); 

    mPlay = (ImageButton) findViewById(R.id.play); 
    mPause = (ImageButton) findViewById(R.id.pause); 
    mReset = (ImageButton) findViewById(R.id.reset); 
    mStop = (ImageButton) findViewById(R.id.stop); 

    mPlay.setOnClickListener(new OnClickListener() { 
     public void onClick(View view) { 
      playVideo(); 
     } 
    }); 
    mPause.setOnClickListener(new OnClickListener() { 
     public void onClick(View view) { 
      if (mVideoView != null) { 
       mVideoView.pause(); 
      } 
     } 
    }); 
    mReset.setOnClickListener(new OnClickListener() { 
     public void onClick(View view) { 
      if (mVideoView != null) { 
       mVideoView.seekTo(0); 
      } 
     } 
    }); 
    mStop.setOnClickListener(new OnClickListener() { 
     public void onClick(View view) { 
      if (mVideoView != null) { 
       current = null; 
       mVideoView.stopPlayback(); 
      } 
     } 
    }); 
    runOnUiThread(new Runnable(){ 
     public void run() { 
      playVideo(); 

     } 

    }); 
} 

private void playVideo() { 
    try { 
     final String path = mPath.getText().toString(); 
     Log.v(TAG, "path: " + path); 
     if (path == null || path.length() == 0) { 
      Toast.makeText(VideoViewDemo.this, "File URL/path is empty", 
        Toast.LENGTH_LONG).show(); 

     } else { 
      // If the path has not changed, just start the media player 
      if (path.equals(current) && mVideoView != null) { 
       mVideoView.start(); 
       mVideoView.requestFocus(); 
       return; 
      } 
      current = path; 
      mVideoView.setVideoPath(getDataSource(path)); 
      mVideoView.start(); 
      mVideoView.requestFocus(); 

     } 
    } catch (Exception e) { 
     Log.e(TAG, "error: " + e.getMessage(), e); 
     if (mVideoView != null) { 
      mVideoView.stopPlayback(); 
     } 
    } 
} 

private String getDataSource(String path) throws IOException { 
    if (!URLUtil.isNetworkUrl(path)) { 
     return path; 
    } else { 
     URL url = new URL(path); 
     URLConnection cn = url.openConnection(); 
     cn.connect(); 
     InputStream stream = cn.getInputStream(); 
     if (stream == null) 
      throw new RuntimeException("stream is null"); 
     File temp = File.createTempFile("mediaplayertmp", "dat"); 
     temp.deleteOnExit(); 
     String tempPath = temp.getAbsolutePath(); 
     FileOutputStream out = new FileOutputStream(temp); 
     byte buf[] = new byte[128]; 
     do { 
      int numread = stream.read(buf); 
      if (numread <= 0) 
       break; 
      out.write(buf, 0, numread); 
     } while (true); 
     try { 
      stream.close(); 
     } catch (IOException ex) { 
      Log.e(TAG, "error: " + ex.getMessage(), ex); 
     } 
     return tempPath; 
    } 
} 
}

来源

2014-10-28 raklar