Android播放視頻的三種方式_Android

來源:互聯網
上載者:User

在Android中,我們有三種方式來實現視頻的播放:

1)、使用其內建的播放器。指定Action為ACTION_VIEW,Data為Uri,Type為其MIME類型。

2)、使用VideoView來播放。在布局檔案中使用VideoView結合MediaController來實現對其控制。

3)、使用MediaPlayer類和SurfaceView來實現,這種方式很靈活。

1、調用其內建的播放器:

Uriuri = Uri.parse(Environment.getExternalStorageDirectory().getPath()+"/Test_Movie.m4v"); //調用系統內建的播放器  Intentintent = new Intent(Intent.ACTION_VIEW);  Log.v("URI:::::::::", uri.toString());  intent.setDataAndType(uri, "video/mp4");  startActivity(intent);

2、使用VideoView來實現:

Uriuri = Uri.parse(Environment.getExternalStorageDirectory().getPath()+"/Test_Movie.m4v"); VideoViewvideoView = (VideoView)this.findViewById(R.id.video_view); videoView.setMediaController(new MediaController(this)); videoView.setVideoURI(uri); videoView.start(); videoView.requestFocus();

3、使用MediaPlayer:

package demo.camera; import java.io.IOException; import android.app.Activity; import android.media.MediaPlayer; import android.media.MediaPlayer.OnCompletionListener; import android.media.MediaPlayer.OnErrorListener; import android.media.MediaPlayer.OnInfoListener; import android.media.MediaPlayer.OnPreparedListener; import android.media.MediaPlayer.OnSeekCompleteListener; import android.media.MediaPlayer.OnVideoSizeChangedListener; import android.os.Bundle; import android.os.Environment; import android.util.Log; import android.view.Display; import android.view.SurfaceHolder; import android.view.SurfaceView; import android.widget.LinearLayout; /** * 該執行個體中使用MediaPlayer完成播放,同時介面使用SurfaceView來實現 * * 這裡我們實現MediaPlayer中很多狀態變化時的監聽器 * * 使用Mediaplayer時,也可以使用MediaController類,但是需要實現MediaController.mediaController介面 * 實現一些控制方法。 * * 然後,設定controller.setMediaPlayer(),setAnchorView(),setEnabled(),show()就可以了,這裡不再實現 * @author Administrator * */ public class VideoSurfaceDemoextends Activityimplements OnCompletionListener,OnErrorListener,OnInfoListener,  OnPreparedListener, OnSeekCompleteListener,OnVideoSizeChangedListener,SurfaceHolder.Callback{  private DisplaycurrDisplay;  private SurfaceViewsurfaceView;  private SurfaceHolderholder;  private MediaPlayerplayer;  private int vWidth,vHeight;  //private boolean readyToPlay = false;     public void onCreate(BundlesavedInstanceState){   super.onCreate(savedInstanceState);   this.setContentView(R.layout.video_surface);        surfaceView = (SurfaceView)this.findViewById(R.id.video_surface);   //給SurfaceView添加CallBack監聽   holder = surfaceView.getHolder();   holder.addCallback(this);   //為了可以播放視頻或者使用Camera預覽,我們需要指定其Buffer類型   holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);      //下面開始執行個體化MediaPlayer對象   player = new MediaPlayer();   player.setOnCompletionListener(this);   player.setOnErrorListener(this);   player.setOnInfoListener(this);   player.setOnPreparedListener(this);   player.setOnSeekCompleteListener(this);   player.setOnVideoSizeChangedListener(this);   Log.v("Begin:::", "surfaceDestroyed called");   //然後指定需要播放檔案的路徑,初始化MediaPlayer   String dataPath = Environment.getExternalStorageDirectory().getPath()+"/Test_Movie.m4v";   try {    player.setDataSource(dataPath);    Log.v("Next:::", "surfaceDestroyed called");   } catch (IllegalArgumentException e) {    e.printStackTrace();   } catch (IllegalStateException e) {    e.printStackTrace();   } catch (IOException e) {    e.printStackTrace();   }   //然後,我們取得當前Display對象   currDisplay = this.getWindowManager().getDefaultDisplay();  }    @Override  public void surfaceChanged(SurfaceHolderarg0, int arg1, int arg2, int arg3) {   // 當Surface尺寸等參數改變時觸發   Log.v("Surface Change:::", "surfaceChanged called");  }  @Override  public void surfaceCreated(SurfaceHolderholder) {   // 當SurfaceView中的Surface被建立的時候被調用   //在這裡我們指定MediaPlayer在當前的Surface中進行播放   player.setDisplay(holder);   //在指定了MediaPlayer播放的容器後,我們就可以使用prepare或者prepareAsync來準備播放了   player.prepareAsync();     }  @Override  public void surfaceDestroyed(SurfaceHolderholder) {      Log.v("Surface Destory:::", "surfaceDestroyed called");  }  @Override  public void onVideoSizeChanged(MediaPlayerarg0, int arg1, int arg2) {   // 當video大小改變時觸發   //這個方法在設定player的source後至少觸發一次   Log.v("Video Size Change", "onVideoSizeChanged called");     }  @Override  public void onSeekComplete(MediaPlayerarg0) {   // seek操作完成時觸發   Log.v("Seek Completion", "onSeekComplete called");     }  @Override  public void onPrepared(MediaPlayerplayer) {   // 當prepare完成後,該方法觸發,在這裡我們播放視頻      //首先取得video的寬和高   vWidth = player.getVideoWidth();   vHeight = player.getVideoHeight();      if(vWidth > currDisplay.getWidth() || vHeight > currDisplay.getHeight()){    //如果video的寬或者高超出了當前螢幕的大小,則要進行縮放    float wRatio = (float)vWidth/(float)currDisplay.getWidth();    float hRatio = (float)vHeight/(float)currDisplay.getHeight();        //選擇大的一個進行縮放    float ratio = Math.max(wRatio, hRatio);        vWidth = (int)Math.ceil((float)vWidth/ratio);    vHeight = (int)Math.ceil((float)vHeight/ratio);        //設定surfaceView的布局參數    surfaceView.setLayoutParams(new LinearLayout.LayoutParams(vWidth, vHeight));        //然後開始播放視頻        player.start();   }  }  @Override  public boolean onInfo(MediaPlayerplayer, int whatInfo, int extra) {   // 當一些特定資訊出現或者警告時觸發   switch(whatInfo){   case MediaPlayer.MEDIA_INFO_BAD_INTERLEAVING:    break;   case MediaPlayer.MEDIA_INFO_METADATA_UPDATE:     break;   case MediaPlayer.MEDIA_INFO_VIDEO_TRACK_LAGGING:    break;   case MediaPlayer.MEDIA_INFO_NOT_SEEKABLE:    break;   }   return false;  }  @Override  public boolean onError(MediaPlayerplayer, int whatError, int extra) {   Log.v("Play Error:::", "onError called");   switch (whatError) {   case MediaPlayer.MEDIA_ERROR_SERVER_DIED:    Log.v("Play Error:::", "MEDIA_ERROR_SERVER_DIED");    break;   case MediaPlayer.MEDIA_ERROR_UNKNOWN:    Log.v("Play Error:::", "MEDIA_ERROR_UNKNOWN");    break;   default:    break;   }   return false;  }  @Override  public void onCompletion(MediaPlayerplayer) {   // 當MediaPlayer播放完成後觸發   Log.v("Play Over:::", "onComletion called");   this.finish();  } }

以上就是本文的全部內容,希望對大家的學習有所協助,也希望大家多多支援雲棲社區。

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