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：