Android三种播放视频的方式-阿里云开发者社区

在Android中，我们有三种方式来实现视频的播放：

1、使用其自带的播放器。指定Action为ACTION_VIEW,Data为Uri，Type为其MIME类型。

2、使用VideoView来播放。在布局文件中使用VideoView结合MediaController来实现对其控制。

3、使用MediaPlayer类和SurfaceView来实现，这种方式很灵活。

1、调用其自带的播放器：

 
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Uri uri = Uri.parse(Environment.getExternalStorageDirectory().getPath()+"/Test_Movie.m4v");      
//调用系统自带的播放器    
    Intent intent = new Intent(Intent.ACTION_VIEW);     
    Log.v("URI:::::::::", uri.toString());     
    intent.setDataAndType(uri, "video/mp4");     
    startActivity(intent);    

2、使用VideoView来实现：

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

3、使用MediaPlayer：

 
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1. package demo.camera;
2. import java.io.IOException;
3. import android.app.Activity;
4. import android.media.MediaPlayer;
5. import android.media.MediaPlayer.OnCompletionListener;
6. import android.media.MediaPlayer.OnErrorListener;
7. import android.media.MediaPlayer.OnInfoListener;
8. import android.media.MediaPlayer.OnPreparedListener;
9. import android.media.MediaPlayer.OnSeekCompleteListener;
10. import android.media.MediaPlayer.OnVideoSizeChangedListener;
11. import android.os.Bundle;
12. import android.os.Environment;
13. import android.util.Log;
14. import android.view.Display;
15. import android.view.SurfaceHolder;
16. import android.view.SurfaceView;
17. import android.widget.LinearLayout;
18. /**
19. * 该实例中使用MediaPlayer完成播放，同时界面使用SurfaceView来实现
20. *
21. * 这里我们实现MediaPlayer中很多状态变化时的监听器
22. *
23. * 使用Mediaplayer时，也可以使用MediaController类，但是需要实现MediaController.mediaController接口
24. * 实现一些控制方法。
25. *
26. * 然后，设置controller.setMediaPlayer(),setAnchorView(),setEnabled(),show()就可以了，这里不再实现
27. * @author Administrator
28. *
29. */
30. public class VideoSurfaceDemo extends Activity implements OnCompletionListener,OnErrorListener,OnInfoListener,
31. OnPreparedListener, OnSeekCompleteListener,OnVideoSizeChangedListener,SurfaceHolder.Callback{
32. private Display currDisplay;
33. private SurfaceView surfaceView;
34. private SurfaceHolder holder;
35. private MediaPlayer player;
36. private int vWidth,vHeight;
37. //private boolean readyToPlay = false;
39. public void onCreate(Bundle savedInstanceState){
40. super.onCreate(savedInstanceState);
41. this.setContentView(R.layout.video_surface);
43. surfaceView = (SurfaceView)this.findViewById(R.id.video_surface);
44. //给SurfaceView添加CallBack监听
45. holder = surfaceView.getHolder();
46. holder.addCallback(this);
47. //为了可以播放视频或者使用Camera预览，我们需要指定其Buffer类型
48. holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
50. //下面开始实例化MediaPlayer对象
51. player = new MediaPlayer();
52. player.setOnCompletionListener(this);
53. player.setOnErrorListener(this);
54. player.setOnInfoListener(this);
55. player.setOnPreparedListener(this);
56. player.setOnSeekCompleteListener(this);
57. player.setOnVideoSizeChangedListener(this);
58. Log.v("Begin:::", "surfaceDestroyed called");
59. //然后指定需要播放文件的路径，初始化MediaPlayer
60. String dataPath = Environment.getExternalStorageDirectory().getPath()+"/Test_Movie.m4v";
61. try {
62. player.setDataSource(dataPath);
63. Log.v("Next:::", "surfaceDestroyed called");
64. } catch (IllegalArgumentException e) {
65. e.printStackTrace();
66. } catch (IllegalStateException e) {
67. e.printStackTrace();
68. } catch (IOException e) {
69. e.printStackTrace();
70. }
71. //然后，我们取得当前Display对象
72. currDisplay = this.getWindowManager().getDefaultDisplay();
73. }
75. @Override
76. public void surfaceChanged(SurfaceHolder arg0, int arg1, int arg2, int arg3) {
77. // 当Surface尺寸等参数改变时触发
78. Log.v("Surface Change:::", "surfaceChanged called");
79. }
80. @Override
81. public void surfaceCreated(SurfaceHolder holder) {
82. // 当SurfaceView中的Surface被创建的时候被调用
83. //在这里我们指定MediaPlayer在当前的Surface中进行播放
84. player.setDisplay(holder);
85. //在指定了MediaPlayer播放的容器后，我们就可以使用prepare或者prepareAsync来准备播放了
86. player.prepareAsync();
88. }
89. @Override
90. public void surfaceDestroyed(SurfaceHolder holder) {
92. Log.v("Surface Destory:::", "surfaceDestroyed called");
93. }
94. @Override
95. public void onVideoSizeChanged(MediaPlayer arg0, int arg1, int arg2) {
96. // 当video大小改变时触发
97. //这个方法在设置player的source后至少触发一次
98. Log.v("Video Size Change", "onVideoSizeChanged called");
100. }
101. @Override
102. public void onSeekComplete(MediaPlayer arg0) {
103. // seek操作完成时触发
104. Log.v("Seek Completion", "onSeekComplete called");
106. }
107. @Override
108. public void onPrepared(MediaPlayer player) {
109. // 当prepare完成后，该方法触发，在这里我们播放视频
111. //首先取得video的宽和高
112. vWidth = player.getVideoWidth();
113. vHeight = player.getVideoHeight();
115. if(vWidth > currDisplay.getWidth() || vHeight > currDisplay.getHeight()){
116. //如果video的宽或者高超出了当前屏幕的大小，则要进行缩放
117. float wRatio = (float)vWidth/(float)currDisplay.getWidth();
118. float hRatio = (float)vHeight/(float)currDisplay.getHeight();
120. //选择大的一个进行缩放
121. float ratio = Math.max(wRatio, hRatio);
123. vWidth = (int)Math.ceil((float)vWidth/ratio);
124. vHeight = (int)Math.ceil((float)vHeight/ratio);
126. //设置surfaceView的布局参数
127. surfaceView.setLayoutParams(new LinearLayout.LayoutParams(vWidth, vHeight));
129. //然后开始播放视频
131. player.start();
132. }
133. }
134. @Override
135. public boolean onInfo(MediaPlayer player, int whatInfo, int extra) {
136. // 当一些特定信息出现或者警告时触发
137. switch(whatInfo){
138. case MediaPlayer.MEDIA_INFO_BAD_INTERLEAVING:
139. break;
140. case MediaPlayer.MEDIA_INFO_METADATA_UPDATE:
141. break;
142. case MediaPlayer.MEDIA_INFO_VIDEO_TRACK_LAGGING:
143. break;
144. case MediaPlayer.MEDIA_INFO_NOT_SEEKABLE:
145. break;
146. }
147. return false;
148. }
149. @Override
150. public boolean onError(MediaPlayer player, int whatError, int extra) {
151. Log.v("Play Error:::", "onError called");
152. switch (whatError) {
153. case MediaPlayer.MEDIA_ERROR_SERVER_DIED:
154. Log.v("Play Error:::", "MEDIA_ERROR_SERVER_DIED");
155. break;
156. case MediaPlayer.MEDIA_ERROR_UNKNOWN:
157. Log.v("Play Error:::", "MEDIA_ERROR_UNKNOWN");
158. break;
159. default:
160. break;
161. }
162. return false;
163. }
164. @Override
165. public void onCompletion(MediaPlayer player) {
166. // 当MediaPlayer播放完成后触发
167. Log.v("Play Over:::", "onComletion called");
168. this.finish();
169. }
170. }
  
  http://blog.csdn.net/itachi85/article/details/7216962