【实例简介】

【实例截图】

【核心代码】

package com.cn.mvideo;

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;

public class MVideo extends Activity {

private File myRecAudioFile;

private SurfaceView mSurfaceView;

private SurfaceHolder mSurfaceHolder;

private Button buttonStart;

private Button buttonStop;

private File dir;

private MediaRecorder recorder;

private String SD_CARD_TEMP_DIR = getSDPath() File.separator "myvideo"

File.separator;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

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);

dir = new File(SD_CARD_TEMP_DIR);

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.setAudioSource(MediaRecorder.AudioSource.MIC); // 录音源为麦克风

recorder.setMaxDuration(10000);// 最大期限

recorder.setVideoSource(MediaRecorder.VideoSource.CAMERA); // 从照相机采集视频

recorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT);

recorder.setVideoSize(480, 320);

recorder.setVideoFrameRate(3); // 每秒3帧

recorder.setVideoEncoder(MediaRecorder.VideoEncoder.DEFAULT); // 设置视频编码方式

recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);

recorder.setOutputFile(myRecAudioFile.getAbsolutePath());// 保存路径

recorder.prepare();

recorder.start();

} catch (IOException e) {

e.printStackTrace();

}

}

public static String getSDPath() {

File sdDir = null;

boolean sdCardExist = Environment.getExternalStorageState().equals(

android.os.Environment.MEDIA_MOUNTED); // 判断sd卡是否存在

if (sdCardExist) {

sdDir = Environment.getExternalStorageDirectory();// 获取跟目录

} else {

return null;

}

System.out.println("sd路径是：" sdDir.toString());

return sdDir.toString();

}

}