android-录像

package com.example.android_camera;

import android.media.MediaRecorder;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.SurfaceView;
import android.view.View;

import java.io.IOException;

public class MediaRecorderActivity extends AppCompatActivity {

private SurfaceView sv_recorder_surface;
private MediaRecorder mediaRecorder;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_media_recorder);
sv_recorder_surface = (SurfaceView) findViewById(R.id.sv_recorder_surface);

//实例化媒体录制器
mediaRecorder = new MediaRecorder();
}

public void start(View view){
mediaRecorder.reset();

mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);

//设置格式
mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);

mediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H263);
mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);

//设置保存路径
mediaRecorder.setOutputFile("/mnt/sdcard/000"+System.currentTimeMillis()+".mp4");

mediaRecorder.setPreviewDisplay(sv_recorder_surface.getHolder().getSurface());

try {
mediaRecorder.prepare();
mediaRecorder.start();
} catch (IOException e) {
e.printStackTrace();
}

}
public void stop(View view){
if(mediaRecorder!=null){
mediaRecorder.stop();
mediaRecorder.release();
mediaRecorder=null;
}
}
}

<uses-permission android:name="android.permission.RECORD_AUDIO"/>