我有一个可以播放RAW文件夹中的视频文件的VideoActivity，
我还希望能够播放Assets文件夹中的文件及其子文件夹
让我们说Assets / Media / file01.mp4
我知道我需要实现自定义内容提供程序才能这样做..
任何人都可以告诉我如何这样做的方式？
由于
我的视频活动：
package com.qualcomm.QCARSamples.ImageTargets;
import java.io.IOException;
import com.vstory.R;
import com.vstory.util.ResourcesLoader;
import com.vstory.util.MediaManager;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.DialogInterface.OnKeyListener;
import android.content.res.AssetFileDescriptor;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnCompletionListener;
import android.media.MediaPlayer.OnErrorListener;
import android.media.MediaPlayer.OnPreparedListener;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.view.KeyEvent;
import android.view.SurfaceHolder;
import android.view.View;
import android.widget.MediaController;
import android.widget.VideoView;
public class VideoActivity extends Activity {
private VideoView _videoView;
private String value;
ProgressDialog _dialog;
private String titleFolder;
private SurfaceHolder holder;
protected void onCreate(Bundle savedInstanceState)
{
Log.d("VideoActivity::onCreate","Started");
super.onCreate(savedInstanceState);
View myPreview = new View(this);
// Create Loading Box
try
{
myPreview.setBackgroundColor(android.R.color.black);
_dialog = ProgressDialog.show(this, "",
"Loading. Please wait...", true);
setContentView(myPreview);
}
catch(Exception e)
{
Log.e("VideoActivity::onCreate",e.getMessage());
}
// Add Back Button Event While Loading
_dialog.setOnKeyListener(new OnKeyListener() {
public boolean onKey(DialogInterface dialog, int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK )
finish();
// TODO Auto-generated method stub
return false;
}
});
// Add Video layout
setContentView(R.layout.video);
Log.d("VideoActivity::onCreate","Created");
_videoView = (VideoView)findViewById(R.id.video_view);
// Init Player
InitializeVideoPlayer();
final Bundle extras = getIntent().getExtras();
if (extras == null)
{
Log.e("VideoActivity","extras == null");
super.finish();
return;
}
titleFolder = extras.getString("titleFolder");
value = extras.getString("value");
if (value == null)
{
Log.e("VideoActivity","value == null");
super.finish();
return;
}
if ( value.contains("http"))
{
Log.d("VideoActivity::onCreate","Url Video");
Uri uri = Uri.parse(value);
_videoView.setVideoURI(uri);
Play();
}
else
{
// Local Resource
Log.d("VideoActivity::onCreate","Local Video");
if (titleFolder == null)
{
Log.e("VideoActivity","titleFolder == null");
super.finish();
return;
}
// ----------------------
/*
this.setContentView(R.layout.video);
// mVideoView = (VideoView) this.findViewById(R.id.surface_view);
holder = _videoView.getHolder();
holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
MediaPlayer player = new MediaPlayer();
//player.setDisplay(holder);
AssetFileDescriptor afd;
try {
afd = getAssets().openFd(titleFolder+"/"+value);
player.setDataSource(afd.getFileDescriptor(),afd.getStartOffset(), afd.getLength());
player.prepareAsync();
player.setOnPreparedListener(new OnPreparedListener() {
public void onPrepared(MediaPlayer mp) {
_dialog.cancel();
mp.start();
}
});
} catch (Exception e) { e.printStackTrace();}
*/
// ----------------------
//player = new MediaPlayer();
//player.setDataSource(afd.getFileDescriptor());
//player.prepare();
//player.start();
String path;
value = value.substring(0, value.lastIndexOf('.'));
int id = getResources().getIdentifier(getPackageName()+":raw/"+value.toLowerCase(), null, null);
path = "android.resource://" + getPackageName() + "/" + id ;
//path = loader.LoadFile(value, true);
_videoView.setVideoPath(path);
Play();
}
}
private void InitializeVideoPlayer() {
_videoView.setOnCompletionListener(new OnCompletionListener() {
public void onCompletion(MediaPlayer mp) {
finish();
}
});
_videoView.setOnPreparedListener(new OnPreparedListener() {
public void onPrepared(MediaPlayer mp) {
_dialog.cancel();
}
});
_videoView.setOnErrorListener(new OnErrorListener() {
public boolean onError(MediaPlayer mp, int what, int extra) {
Log.e("VideoActivity::onError","Error in loading movie looking for another source");
return false;
}
});
}
public void Play(){
try{
_videoView.setMediaController(new MediaController(this));
_videoView.requestFocus();
_videoView.postInvalidateDelayed(100);
_videoView.start();
}
catch(Exception e){
Log.e("Video::Play",e.getMessage());
}
}
@Override
protected void onPause() {
// TODO Auto-generated method stub
Log.d("VideoActivitiy","onPause");
super.onPause();
finish();
}
@Override
protected void onStop() {
// TODO Auto-generated method stub
Log.d("VideoActivitiy","onStop");
super.onStop();
finish();
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK){
if (_videoView.isPlaying() )
_videoView.stopPlayback();
}
this.finish();
return false;
}
}
答案 0 :(得分：1)