SurfaceView之视频刻录

一般播放动态的画面就可以用到该控件SurfaceView：
视频刻录和音频的刻录用的都是同一个MediaRecorder的类具体代码如下：
 1 package com.android.hzy.videorecoder;
 2 
 3 import java.io.File;
 4 
 5 import android.app.Activity;
 6 import android.media.MediaRecorder;
 7 import android.os.Bundle;
 8 import android.os.Environment;
 9 import android.view.SurfaceHolder;
10 import android.view.SurfaceView;
11 import android.view.View;
12 import android.view.Window;
13 import android.view.WindowManager;
14 import android.widget.Button;
15 
16 public class MainActivity extends Activity {
17 
18     private SurfaceView surfaceview;
19     private MediaRecorder mr;
20     private Button bt_start;
21     private Button bt_stop;
22     
23     @Override
24     protected void onCreate(Bundle savedInstanceState) {
25         super.onCreate(savedInstanceState);
26         requestWindowFeature(Window.FEATURE_NO_TITLE); // 去除标题  必须在setContentView()方法之前调用
27         setContentView(R.layout.activity_main);
28         
29         getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); // 设置全屏
30         
31         surfaceview = (SurfaceView) findViewById(R.id.surfaceview);
32         SurfaceHolder holder = surfaceview.getHolder();
33         holder.setFixedSize(176, 154);
34         holder.setKeepScreenOn(true);
35         holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
36         
37         bt_start = (Button) findViewById(R.id.bt_start);
38         bt_stop = (Button) findViewById(R.id.bt_stop);
39         
40         
41     }
42     
43     /**
44      * 开始刻录
45      * @param v
46      */
47     public void shoot(View v){
48         try {
49             mr = new MediaRecorder();
50             mr.reset(); // 重置
51             mr.setAudioSource(MediaRecorder.AudioSource.MIC); // 设置声音的来源
52             mr.setVideoSource(MediaRecorder.VideoSource.CAMERA); // 视频的来源是相机
53             mr.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
54             mr.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); // 设置音频编码格式
55             mr.setVideoEncoder(MediaRecorder.VideoEncoder.H264);
56             File file = new File(Environment.getExternalStorageDirectory(),System.currentTimeMillis()+".3gp");
57             mr.setOutputFile(file.getAbsolutePath());
58             // 设置预览显示
59             mr.setPreviewDisplay(surfaceview.getHolder().getSurface());
60             mr.prepare();
61             mr.start();
62             
63             bt_start.setEnabled(false);
64             bt_stop.setEnabled(true);
65             
66         } catch (Exception e) {
67             // TODO Auto-generated catch block
68             e.printStackTrace();
69         }
70     }
71     
72     /**
73      * 停止刻录
74      * @param v
75      */
76     public void stopvideo(View v){
77         mr.stop();
78         bt_start.setEnabled(true);
79         bt_stop.setEnabled(false);
80         mr.release();
81         mr = null;
82     }
83     
84     
85     
86 }