Android之录制视频文件

直接使用实例演示(注意代码注释)：

【0】Manifest文件

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.hoo.videorecord" android:versionCode="1" android:versionName="1.0"> <application android:icon="@drawable/icon" android:label="@string/app_name"> <activity android:name="com.hoo.videorecord.MainActivity" android:label="@string/app_name" android:screenOrientation="landscape"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application><uses-sdk android:minSdkVersion="7" /><uses-permission android:name="android.permission.RECORD_AUDIO"/><uses-permission android:name="android.permission.CAMERA"/><uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/><uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/></manifest>

【1】主界面布局文件

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:background="#ffffff" android:layout_width="fill_parent" android:layout_height="fill_parent" ><SurfaceView android:layout_width="fill_parent" android:layout_height="220dip" android:id="@+id/surfaceView" /> <LinearLayout android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="fill_parent" android:gravity="right" > <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/record" android:id="@+id/record" /> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="10dip" android:text="@string/stop" android:id="@+id/stop" /> </LinearLayout></LinearLayout>

【2】MainActivity

public class MainActivity extends Activity {private static final String TAG = "MainActivity"; private SurfaceView surfaceView; private MediaRecorder mediaRecorder; private boolean record; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); //获取一个mediaRecorder实例 mediaRecorder = new MediaRecorder(); surfaceView = (SurfaceView) this.findViewById(R.id.surfaceView); //下面设置Surface不维护自己的缓冲区，而是等待屏幕的渲染引擎将内容推送到用户面前 this.surfaceView.getHolder().setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); //设置分辨率 this.surfaceView.getHolder().setFixedSize(320, 240); //设置按钮监听器 ButtonClickListener listener = new ButtonClickListener(); //找到录制与停止按钮 Button stopButton = (Button) this.findViewById(R.id.stop); Button recordButton = (Button) this.findViewById(R.id.record); //两个按钮的监听器 stopButton.setOnClickListener(listener); recordButton.setOnClickListener(listener); } //设置销毁 @Overrideprotected void onDestroy() { mediaRecorder.release();super.onDestroy();} //设置private final class ButtonClickListener implements View.OnClickListener{@Overridepublic void onClick(View v) {if(!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){Toast.makeText(MainActivity.this, R.string.sdcarderror, 1).show();return ;}try {switch (v.getId()) {case R.id.record:mediaRecorder.reset();//从照相机采集视频mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA); mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC); //设置输出格式mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);//设置大小mediaRecorder.setVideoSize(320, 240);//每秒3帧mediaRecorder.setVideoFrameRate(3); //设置视频编码方式mediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H263); //设置音频编码方式mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);//把录制下的视频保存到SDCard的根目录下File videoFile = new File(Environment.getExternalStorageDirectory(), System.currentTimeMillis()+".3gp");mediaRecorder.setOutputFile(videoFile.getAbsolutePath());//mediaRecorder.setPreviewDisplay(surfaceView.getHolder().getSurface());//预期准备mediaRecorder.prepare();//开始刻录mediaRecorder.start();record = true;break;case R.id.stop:if(record){mediaRecorder.stop();record = false;}break;}} catch (Exception e) {Toast.makeText(MainActivity.this, R.string.error, 1).show();Log.e(TAG, e.toString());}} }}

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