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：

package com.android.hzy.videorecoder;

import java.io.File;

import android.app.Activity;
import android.media.MediaRecorder;
import android.os.Bundle;
import android.os.Environment;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;

public class MainActivity extends Activity {

    private SurfaceView surfaceview;
    private MediaRecorder mr;
    private Button bt_start;
    private Button bt_stop;
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE); // 去除标题  必须在setContentView()方法之前调用
        setContentView(R.layout.activity_main);
        
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); // 设置全屏
        
        surfaceview = (SurfaceView) findViewById(R.id.surfaceview);
        SurfaceHolder holder = surfaceview.getHolder();
        holder.setFixedSize(176, 154);
        holder.setKeepScreenOn(true);
        holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
        
        bt_start = (Button) findViewById(R.id.bt_start);
        bt_stop = (Button) findViewById(R.id.bt_stop);
        
        
    }
    
    /**
     * 开始刻录
     * @param v
     */
    public void shoot(View v){
        try {
            mr = new MediaRecorder();
            mr.reset(); // 重置
            mr.setAudioSource(MediaRecorder.AudioSource.MIC); // 设置声音的来源
            mr.setVideoSource(MediaRecorder.VideoSource.CAMERA); // 视频的来源是相机
            mr.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
            mr.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); // 设置音频编码格式
            mr.setVideoEncoder(MediaRecorder.VideoEncoder.H264);
            File file = new File(Environment.getExternalStorageDirectory(),System.currentTimeMillis()+".3gp");
            mr.setOutputFile(file.getAbsolutePath());
            // 设置预览显示
            mr.setPreviewDisplay(surfaceview.getHolder().getSurface());
            mr.prepare();
            mr.start();
            
            bt_start.setEnabled(false);
            bt_stop.setEnabled(true);
            
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
    
    /**
     * 停止刻录
     * @param v
     */
    public void stopvideo(View v){
        mr.stop();
        bt_start.setEnabled(true);
        bt_stop.setEnabled(false);
        mr.release();
        mr = null;
    }
    
    
    
}