Android-录制视频

布局文件：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_media_recorder"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:orientation="vertical"
    tools:context="com.example.android_cemera.MediaRecorderActivity">

    <SurfaceView
        android:layout_width="match_parent"
        android:layout_height="300dp"
        android:id="@+id/media_recorder_surface"
        />
    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="开始录制视频"
        android:onClick="start"
        />
    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="暂停录制"
        android:onClick="stop"
        />
</LinearLayout>


Activity:

package com.example.android_cemera;

import android.media.MediaPlayer;
import android.media.MediaRecorder;
import android.provider.Settings;
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 media_recorder_surface;
    private MediaRecorder mediaRecorder;;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_media_recorder);
        media_recorder_surface = (SurfaceView) findViewById(R.id.media_recorder_surface);
        //实例化媒体录制器
        mediaRecorder = new MediaRecorder();
    }
      public void start(View view){
        //重定向
        mediaRecorder.reset();
        //设置媒体路径
        mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
        mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
        //设置格式
        mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
        //设置编码
 mediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H263);        mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
        //设置保存的路径
        mediaRecorder.setOutputFile("//mnt/sdcard/vedio_"+System.currentTimeMillis()+".mp4");
        //展示画面
        mediaRecorder.setPreviewDisplay(media_recorder_surface.getHolder().getSurface());
        //准备
        try {
            mediaRecorder.prepare();
            mediaRecorder.start();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    public void stop(View view){
   if (mediaRecorder!=null){
       mediaRecorder.stop();
       mediaRecorder.release();
       mediaRecorder=null;
   }
    }
}

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