Hello,
I have this error : MediaRecorder start failed: -38.
*Source code activity :*
package com.example.testcamera3;
import java.io.IOException;
import android.hardware.Camera;
import android.hardware.Camera.Parameters;
import android.media.CamcorderProfile;
import android.media.MediaRecorder;
import android.os.Bundle;
import android.os.Environment;
import android.app.Activity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class VideoStackActivity extends Activity implements
SurfaceHolder.Callback {
private SurfaceHolder surfaceHolder;
private SurfaceView surfaceView;
public MediaRecorder mrec = new MediaRecorder();
private Button startRecording = null;
private Camera mCamera;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_video_stack);
startRecording = (Button)findViewById(R.id.buttonstart);
startRecording.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
startRecording();
}
});
mCamera = Camera.open();
surfaceView = (SurfaceView)findViewById(R.id.surface_camera);
surfaceHolder = surfaceView.getHolder();
surfaceHolder.addCallback(this);
surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
menu.add(0, 0, 0, "StartRecording");
menu.add(0, 1, 0, "StopRecording");
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch(item.getItemId()) {
case 0:
try {
startRecording();
} catch (Exception e) {
mrec.release();
}
break;
case 1:
mrec.stop();
mrec.release();
mrec = null;
break;
default:
break;
}
return super.onOptionsItemSelected(item);
}
protected void startRecording() {
mrec = new MediaRecorder();
mCamera.unlock();
mrec.setCamera(mCamera);
mrec.setPreviewDisplay(surfaceHolder.getSurface());
mrec.setVideoSource(MediaRecorder.VideoSource.CAMERA);
mrec.setAudioSource(MediaRecorder.AudioSource.MIC);
mrec.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_LOW));
mrec.setVideoFrameRate(1);
// A tester
//mrec.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
mrec.setPreviewDisplay(surfaceHolder.getSurface());
//ok
mrec.setOutputFile(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MOVIES)+"/test.mp4");
// Ok !
try {
mrec.prepare();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
mrec.start();
}
protected void stopRecording() {
mrec.stop();
mrec.reset();
mCamera.release();
}
private void releaseMediaRecorder() {
if(mrec != null) {
mrec.reset();
mrec.release();
mrec = null;
mCamera.lock();
}
}
private void releaseCamera() {
if(mCamera != null) {
mCamera.release();
mCamera = null;
}
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
if(mCamera!=null) {
Parameters params = mCamera.getParameters();
mCamera.setParameters(params);
}
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
if(mCamera != null) {
mCamera.stopPreview();
mCamera.release();
}
}
}
*Source code layout :
*<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android";
xmlns:tools="http://schemas.android.com/tools";
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".VideoStackActivity"
android:orientation="vertical">
<SurfaceView
android:id="@+id/surface_camera"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"/>
<Button
android:id="@+id/buttonstart"
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>
</RelativeLayout>*
*
*Source code Manifest :*
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android";
package="com.example.testcamera3"
android:versionCode="1"
android:versionName="1.0" >
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission
android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.INTERNET"/>
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.testcamera3.VideoStackActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
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