Android视频录制
package cn.itcast.videorecord;import java.io.File;import android.app.Activity;import android.media.MediaRecorder;import android.os.Bundle;import android.os.Environment;import android.util.Log;import android.view.SurfaceHolder;import android.view.SurfaceView;import android.view.View;import android.widget.Button;import android.widget.Toast;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); 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); this.surfaceView.getHolder().setFixedSize(320, 240);//设置分辨率 ButtonClickListener listener = new ButtonClickListener(); Button stopButton = (Button) this.findViewById(R.id.stop); Button recordButton = (Button) this.findViewById(R.id.record); stopButton.setOnClickListener(listener); recordButton.setOnClickListener(listener); } @Overrideprotected void onDestroy() { mediaRecorder.release();super.onDestroy();}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();mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA); //从照相机采集视频mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC); mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);mediaRecorder.setVideoSize(320, 240);mediaRecorder.setVideoFrameRate(3); //每秒3帧mediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H263); //设置视频编码方式mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);File videoFile = new File(Environment.getExternalStorageDirectory(), System.currentTimeMillis()+".3gp");mediaRecorder.setOutputFile(videoFile.getAbsolutePath());mediaRecorder.setPreviewDisplay(surfaceView.getHolder().getSurface());mediaRecorder.prepare();//预期准备mediaRecorder.start();//开始刻录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());}} }}<?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>
<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android" package="cn.itcast.videorecord" android:versionCode="1" android:versionName="1.0"> <application android:icon="@drawable/icon" android:label="@string/app_name"> <activity android:name=".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>