import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.PixelFormat;
import android.hardware.Camera;
import android.util.Log;
import android.view.KeyEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
public class PreView extends SurfaceView implements SurfaceHolder.Callback {
private SurfaceHolder holder = null;
private Camera mCamera = null;
private Bitmap mBitmap = null;
public PreView(Context context) {
super(context);
Log.i("TAG", "PreView()");
// TODO Auto-generated constructor stub
holder = this.getHolder();
holder.addCallback(this);
holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
}
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
Log.i("TAG", "surfaceChanged");
// TODO Auto-generated method stub
Camera.Parameters parameters = mCamera.getParameters();
parameters.setPictureFormat(PixelFormat.JPEG);
parameters.setPreviewSize(320, 480);
// parameters.setPictureSize(320, 480);
mCamera.setParameters(parameters);
mCamera.startPreview();
}
public void surfaceCreated(SurfaceHolder holder) {
Log.i("TAG", "surfaceCreated");
// TODO Auto-generated method stub
mCamera = Camera.open();
try {
mCamera.setPreviewDisplay(holder);
} catch (IOException e) {
mCamera.release();
mCamera = null;
}
}
public void surfaceDestroyed(SurfaceHolder holder) {
Log.i("TAG", "surfaceDestroyed");
// TODO Auto-generated method stub
mCamera.stopPreview();
mCamera = null;
}
public boolean onKeyDown(int keyCode, KeyEvent event) {
if(keyCode==KeyEvent.KEYCODE_DPAD_CENTER){
if(mCamera !=null){
mCamera.takePicture(null, null,pic);
}
}
return super.onKeyDown(keyCode, event);
}
public Camera.PictureCallback pic = new Camera.PictureCallback(){
public void onPictureTaken(byte[] data, Camera camera) {
// TODO Auto-generated method stub
mBitmap = BitmapFactory.decodeByteArray(data, 0, data.length);
File f = new File(android.os.Environment.getExternalStorageDirectory()+"/camera1.jpg");
try {
BufferedOutputStream os = new BufferedOutputStream(new FileOutputStream(f));
mBitmap.compress(Bitmap.CompressFormat.JPEG, 80, os);
os.flush();
os.close();
Canvas canvas = holder.lockCanvas();
canvas.drawBitmap(mBitmap, 0, 0, null);
holder.unlockCanvasAndPost(canvas);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
};
}
///**************************************************CameraApplication
import android.app.Activity;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.Window;
public class CameraApplication extends Activity {
/** Called when the activity is first created. */
private PreView pv = null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
pv = new PreView(this);
setContentView(pv);
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
// TODO Auto-generated method stub
return pv.onKeyDown(keyCode, event);
}
}
///****************************************************AndroidManifest XML:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.camapp"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="15" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-feature android:name="android.hardware.camera" />
<uses-feature android:name="android.hardware.camera.autofocus" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".CameraApplication"
android:label="@string/title_activity_starting" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>