Mega Code Archive
Record video
<![CDATA[
package app.test;
import java.io.File;
import java.io.IOException;
import android.app.Activity;
import android.hardware.Camera;
import android.media.MediaRecorder;
import android.media.MediaRecorder.OnErrorListener;
import android.media.MediaRecorder.OnInfoListener;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.View;
import android.widget.Button;
import android.widget.MediaController;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.VideoView;
public class Test extends Activity implements
SurfaceHolder.Callback, OnInfoListener, OnErrorListener {
private static final String TAG = "RecordVideo";
private MediaRecorder mRecorder = null;
private String mOutputFileName;
private VideoView mVideoView = null;
private SurfaceHolder mHolder = null;
private Button mInitBtn = null;
private Button mStartBtn = null;
private Button mStopBtn = null;
private Button mPlayBtn = null;
private Button mStopPlayBtn = null;
private Camera mCamera = null;
private TextView mRecordingMsg = null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.v(TAG, "in onCreate");
setContentView(R.layout.main);
mInitBtn = (Button) findViewById(R.id.initBtn);
mStartBtn = (Button) findViewById(R.id.beginBtn);
mStopBtn = (Button) findViewById(R.id.stopBtn);
mPlayBtn = (Button) findViewById(R.id.playRecordingBtn);
mStopPlayBtn = (Button) findViewById(R.id.stopPlayingRecordingBtn);
mRecordingMsg = (TextView) findViewById(R.id.recording);
mVideoView = (VideoView)this.findViewById(R.id.videoView);
}
private boolean initCamera() {
try {
mCamera = Camera.open();
Camera.Parameters camParams = mCamera.getParameters();
mCamera.lock();
mCamera.setDisplayOrientation(90);
mCamera.setParameters(camParams);
mHolder = mVideoView.getHolder();
mHolder.addCallback(this);
mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
}
catch(RuntimeException re) {
re.printStackTrace();
return false;
}
return true;
}
private void releaseRecorder() {
if(mRecorder != null) {
mRecorder.release();
mRecorder = null;
}
}
private void releaseCamera() {
if(mCamera != null) {
try {
mCamera.reconnect();
} catch (IOException e) {
e.printStackTrace();
}
mCamera.release();
mCamera = null;
}
}
@Override
protected void onResume() {
super.onResume();
mInitBtn.setEnabled(false);
mStartBtn.setEnabled(false);
mStopBtn.setEnabled(false);
mPlayBtn.setEnabled(false);
mStopPlayBtn.setEnabled(false);
if(!initCamera())
finish();
}
@Override
protected void onPause() {
Log.v(TAG, "in onPause");
super.onPause();
releaseRecorder();
releaseCamera();
}
@Override
protected void onDestroy() {
super.onDestroy();
}
public void doClick(View view) {
switch(view.getId()) {
case R.id.initBtn:
initRecorder();
break;
case R.id.beginBtn:
beginRecording();
break;
case R.id.stopBtn:
stopRecording();
break;
case R.id.playRecordingBtn:
playRecording();
break;
case R.id.stopPlayingRecordingBtn:
stopPlayingRecording();
break;
}
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
try {
mCamera.setPreviewDisplay(mHolder);
mCamera.startPreview();
} catch (IOException e) {
e.printStackTrace();
}
mInitBtn.setEnabled(true);
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
}
private void initRecorder() {
if(mRecorder != null) return;
mOutputFileName = Environment.getExternalStorageDirectory() +
"/videooutput.mp4";
File outFile = new File(mOutputFileName);
if(outFile.exists()) {
outFile.delete();
}
try {
mCamera.stopPreview();
mCamera.unlock();
mRecorder = new MediaRecorder();
mRecorder.setCamera(mCamera);
mRecorder.setAudioSource(MediaRecorder.AudioSource.CAMCORDER);
mRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
mRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
mRecorder.setVideoSize(176, 144);
mRecorder.setVideoFrameRate(15);
mRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.MPEG_4_SP);
mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
mRecorder.setMaxDuration(7000); // limit to 7 seconds
mRecorder.setPreviewDisplay(mHolder.getSurface());
mRecorder.setOutputFile(mOutputFileName);
mRecorder.prepare();
Log.v(TAG, "MediaRecorder initialized");
mInitBtn.setEnabled(false);
mStartBtn.setEnabled(true);
}
catch(Exception e) {
Log.v(TAG, "MediaRecorder failed to initialize");
e.printStackTrace();
}
}
private void beginRecording() {
mRecorder.setOnInfoListener(this);
mRecorder.setOnErrorListener(this);
mRecorder.start();
mRecordingMsg.setText("RECORDING");
mStartBtn.setEnabled(false);
mStopBtn.setEnabled(true);
}
private void stopRecording() {
if (mRecorder != null) {
mRecorder.setOnErrorListener(null);
mRecorder.setOnInfoListener(null);
try {
mRecorder.stop();
}
catch(IllegalStateException e) {
}
releaseRecorder();
mRecordingMsg.setText("");
releaseCamera();
mStartBtn.setEnabled(false);
mStopBtn.setEnabled(false);
mPlayBtn.setEnabled(true);
}
}
private void playRecording() {
MediaController mc = new MediaController(this);
mVideoView.setMediaController(mc);
mVideoView.setVideoPath(mOutputFileName);
mVideoView.start();
mStopPlayBtn.setEnabled(true);
}
private void stopPlayingRecording() {
mVideoView.stopPlayback();
}
@Override
public void onInfo(MediaRecorder mr, int what, int extra) {
if(what == MediaRecorder.MEDIA_RECORDER_INFO_MAX_DURATION_REACHED) {
stopRecording();
Toast.makeText(this, "Recording limit has been reached. Stopping the recording",
Toast.LENGTH_SHORT).show();
}
}
@Override
public void onError(MediaRecorder mr, int what, int extra) {
stopRecording();
Toast.makeText(this, "Recording error has occurred. Stopping the recording",
Toast.LENGTH_SHORT).show();
}
}
//main.xml
<?xml version="1.0" encoding="utf-8"?>
<!-- This file is /res/layout/main.xml -->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<Button android:id="@+id/beginBtn" android:layout_width="fill_parent"
android:layout_height="wrap_content" android:text="Begin Recording"
android:onClick="doClick" android:enabled="false" />
<Button android:id="@+id/stopBtn" android:layout_width="fill_parent"
android:layout_height="wrap_content" android:text="Stop Recording"
android:onClick="doClick" />
<Button android:id="@+id/playRecordingBtn" android:layout_width="fill_parent"
android:layout_height="wrap_content" android:text="Play Recording"
android:onClick="doClick" />
<Button android:id="@+id/stopPlayingRecordingBtn"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:text="Stop Playing Recording"
android:onClick="doClick" />
<RelativeLayout android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center">
<VideoView android:id="@+id/videoView" android:layout_width="150dip"
android:layout_height="100dip" />
</RelativeLayout>
</LinearLayout>
]]>