Android 中使用MediaRecorder进行录像详解（视频录制）
在这里给出自己的一个测试DEMO，里面注释很详细。简单的视频录制功能.
package com.video; import java.io.IOException; import android.app.Activity; import android.content.pm.ActivityInfo; import android.graphics.PixelFormat; import android.media.MediaRecorder; import android.os.Bundle; import android.view.SurfaceHolder; import android.view.SurfaceView; import android.view.View; import android.view.View.OnClickListener; import android.view.Window; import android.view.WindowManager; import android.widget.Button; /** * class name：TestBasicVideo<BR> * class description：一个简单的录制视频例子<BR> * PS：实现基本的录制保存文件 <BR> * * @version 1.00 2011/09/21 * @author CODYY)peijiangping */ public class TestBasicVideo extends Activity implements SurfaceHolder.Callback { private Button start;// 开始录制按钮 private Button stop;// 停止录制按钮 private MediaRecorder mediarecorder;// 录制视频的类 private SurfaceView surfaceview;// 显示视频的控件 // 用来显示视频的一个接口，我靠不用还不行，也就是说用mediarecorder录制视频还得给个界面看 // 想偷偷录视频的同学可以考虑别的办法。。嗯需要实现这个接口的Callback接口 private SurfaceHolder surfaceHolder; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE);// 去掉标题栏 getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);// 设置全屏 // 设置横屏显示 setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); // 选择支持半透明模式,在有surfaceview的activity中使用。 getWindow().setFormat(PixelFormat.TRANSLUCENT); setContentView(R.layout.main); init(); } private void init() { start = (Button) this.findViewById(R.id.start); stop = (Button) this.findViewById(R.id.stop); start.setOnClickListener(new TestVideoListener()); stop.setOnClickListener(new TestVideoListener()); surfaceview = (SurfaceView) this.findViewById(R.id.surfaceview); SurfaceHolder holder = surfaceview.getHolder();// 取得holder holder.addCallback(this); // holder加入回调接口 // setType必须设置，要不出错. holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); } class TestVideoListener implements OnClickListener { @Override public void onClick(View v) { if (v == start) { mediarecorder = new MediaRecorder();// 创建mediarecorder对象 // 设置录制视频源为Camera(相机) mediarecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA); // 设置录制完成后视频的封装格式THREE_GPP为3gp.MPEG_4为mp4 mediarecorder .setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP); // 设置录制的视频编码h263 h264 mediarecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264); // 设置视频录制的分辨率。必须放在设置编码和格式的后面，否则报错 mediarecorder.setVideoSize(176, 144); // 设置录制的视频帧率。必须放在设置编码和格式的后面，否则报错 mediarecorder.setVideoFrameRate(20); mediarecorder.setPreviewDisplay(surfaceHolder.getSurface()); // 设置视频文件输出的路径 mediarecorder.setOutputFile("/sdcard/love.3gp"); try { // 准备录制 mediarecorder.prepare(); // 开始录制 mediarecorder.start(); } catch (IllegalStateException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } if (v == stop) { if (mediarecorder != null) { // 停止录制 mediarecorder.stop(); // 释放资源 mediarecorder.release(); mediarecorder = null; } } } } @Override public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { // 将holder，这个holder为开始在oncreat里面取得的holder，将它赋给surfaceHolder surfaceHolder = holder; } @Override public void surfaceCreated(SurfaceHolder holder) { // 将holder，这个holder为开始在oncreat里面取得的holder，将它赋给surfaceHolder surfaceHolder = holder; } @Override public void surfaceDestroyed(SurfaceHolder holder) { // surfaceDestroyed的时候同时对象设置为null surfaceview = null; surfaceHolder = null; mediarecorder = null; } }
main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="horizontal" > <LinearLayout android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_weight="1" > <SurfaceView android:id="@+id/surfaceview" android:layout_width="fill_parent" android:layout_height="fill_parent" /> </LinearLayout> <LinearLayout android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_weight="4" android:gravity="center" android:orientation="vertical" > <Button android:id="@+id/start" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="1" android:text="Start" /> <Button android:id="@+id/stop" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="1" android:text="Stop" /> </LinearLayout> </LinearLayout>
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.video" android:versionCode="1" android:versionName="1.0" > <application android:icon="@drawable/icon" android:label="@string/app_name" > <activity android:label="@string/app_name" android:name=".TestBasicVideo" > <intent-filter > <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> <uses-sdk android:minSdkVersion="8" /> <uses-permission android:name="android.permission.CAMERA" > </uses-permission> <uses-permission android:name="android.permission.RECORD_AUDIO" > </uses-permission> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" > </uses-permission> </manifest>
