android 音视频录制

<!--音频录制权限-->     
 <uses-permission android:name="android.permission.RECORD_AUDIO"></uses-permission>   
<!--视频录制权限-->   
     <uses-permission android:name="android.permission.CAMERA"/>            
     <uses-permission android:name="android.permission.RECORD_AUDIO"/>            
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>    

视频录制

<pre name="code" class="java">package cn.media;   
   
import java.io.File;   
import java.io.IOException;   
   
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.View.OnClickListener;   
import android.widget.Button;   
   
//视频录制：</pre><pre name="code" class="java">public class MediaConnection extends Activity {   
    private File myRecAudioFile;   
    private SurfaceView mSurfaceView;   
    private SurfaceHolder mSurfaceHolder;   
    private Button buttonStart;   
    private Button buttonStop;   
    private File dir;   
    private MediaRecorder recorder;   
   
    @Override   
    public void onCreate(Bundle savedInstanceState) {   
        super.onCreate(savedInstanceState);   
        setContentView(R.layout.video);   
        mSurfaceView = (SurfaceView) findViewById(R.id.videoView);   
        mSurfaceHolder = mSurfaceView.getHolder();   
   
        mSurfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);   
        buttonStart = (Button) findViewById(R.id.start);   
        buttonStop = (Button) findViewById(R.id.stop);   
        File defaultDir = Environment.getExternalStorageDirectory();   
        String path = defaultDir.getAbsolutePath() + File.separator + "V"   
                + File.separator;   
        // 创建文件夹存放视频   
        dir = new File(path);   
        if (!dir.exists()) {   
            dir.mkdir();   
        }   
        recorder = new MediaRecorder();   
        buttonStart.setOnClickListener(new OnClickListener() {   
            @Override   
            public void onClick(View v) {   
                recorder();   
            }   
        });   
   
        buttonStop.setOnClickListener(new OnClickListener() {   
            @Override   
            public void onClick(View v) {   
                recorder.stop();   
                recorder.reset();   
                recorder.release();   
                recorder = null;   
            }   
        });   
    }   
   
    public void recorder() {   
        try {   
            myRecAudioFile = File.createTempFile("video", ".3gp", dir);// 创建临时文件   
            recorder.setPreviewDisplay(mSurfaceHolder.getSurface());// 预览   
   
            recorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);// 视频源   
            recorder.setAudioSource(MediaRecorder.AudioSource.MIC);   
            // 录音源为麦克风   
   
            recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);   
            // 输出格式为3gp   
            recorder.setVideoSize(800, 480);// 视频尺寸   
            recorder.setVideoFrameRate(15);// 视频帧频率   
            recorder.setVideoEncoder(MediaRecorder.VideoEncoder.H263);// 视频编码   
            recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);   
            // 音频编码   
            recorder.setMaxDuration(10000);// 最大期限   
            recorder.setOutputFile(myRecAudioFile.getAbsolutePath());   
            // 保存路径   
            recorder.prepare();   
            recorder.start();   
        } catch (IOException e) {   
            e.printStackTrace();   
        }   
    }   
}   
</pre>    

音频录制：

package cn.media;   
   
import java.io.File;   
import java.io.IOException;   
   
import android.app.Activity;   
import android.content.ContentResolver;   
import android.content.ContentValues;   
import android.content.Intent;   
import android.media.MediaRecorder;   
import android.net.Uri;   
import android.os.Environment;   
import android.provider.MediaStore;   
import android.util.Log;   
/**  
 * 音频录制  
 * @author Administrator  
 *  
 */   
public class MyMediaRecoder extends Activity {   
   
    MediaRecorder mrec;   
    File audiofile=null;   
    private static final String TAG="SoundRecordingDemo";   
    protected void startRecording() throws IOException   
    {   
//      设置音频源   
        mrec.setAudioSource(MediaRecorder.AudioSource.MIC);   
//      设置文件输出格式   
        mrec.setOutputFormat(MediaRecorder.AudioEncoder.AMR_NB);   
        if(audiofile==null){   
            File sampleDir=Environment.getExternalStorageDirectory();   
            try{   
                audiofile=File.createTempFile("ibm", ".3gp",sampleDir);   
            }   
            catch(IOException e){   
                Log.e(TAG,"sdcard access error");   
                return;   
            }   
        }   
//      文件输出路径   
        mrec.setOutputFile(audiofile.getAbsolutePath());   
           
        mrec.prepare();   
        mrec.start();   
    }   
    protected void stopRecording(){   
        mrec.stop();   
        mrec.release();   
        processAudiofile(audiofile);   
    }   
    protected void processAudiofile(File audiofile){   
        ContentValues values=new ContentValues(3);   
        long current=System.currentTimeMillis();   
        values.put(MediaStore.Audio.Media.TITLE,"audio"+audiofile.getName());   
        values.put(MediaStore.Audio.Media.TITLE, "audio" + audiofile.getName());    
        values.put(MediaStore.Audio.Media.DATE_ADDED, (int) (current / 1000));    
        values.put(MediaStore.Audio.Media.MIME_TYPE, "audio/3gpp");    
        values.put(MediaStore.Audio.Media.DATA, audiofile.getAbsolutePath());    
        ContentResolver contentResolver=getContentResolver();   
        Uri base=MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;   
        Uri newUri=contentResolver.insert(base,values);   
        sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE,newUri));   
    }   
}   

调用系统录音机：

Intent intent=new Intent(android.content.Intent.ACTION_VIEW);   
      File sdcardPath=Environment.getExternalStorageDirectory();   
      Uri audioFileUri=Uri.fromFile(sdcardPath);   
      intent.setDataAndType(audioFileUri,"audio/mp3");   
      startActivity(intent);  

权限：