Develop Reference

Flashlight apk version is Different?

I have flashlight apk with two problem.
İf I use camera, camera.params. My apk working with lower versions Android 5. THen if I use camera2 and camera.manager, My app working with Android 5 and higger versions.
I wanna work with Android version 4 and higger, work with all versions.
How can I do this?
Pls help me for this, thanks.
package com.hallac.erdogan.spechflash;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.hardware.Camera;
import android.hardware.camera2.CameraAccessException;
import android.hardware.camera2.CameraManager;
import android.os.Build;
import android.os.Bundle;
import android.support.annotation.RequiresApi;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.ImageButton;
public class MainActivity extends AppCompatActivity {
ImageButton btnSwitch;
ImageButton flashlight;
private Camera camera;
private boolean isFlashOn;
private boolean hasFlash;
Camera.Parameters params;
private CameraManager mCameraManager;
private String mCameraId;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);//full keran ile ilgili ayarlar
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,//full keran ile ilgili ayarlar
WindowManager.LayoutParams.FLAG_FULLSCREEN);//full keran ile ilgili ayarlar
setContentView(R.layout.activity_main);
// flash switch button
btnSwitch = (ImageButton) findViewById(R.id.buton);
flashlight=(ImageButton)findViewById(R.id.flashlight);
// First check if device is supporting flashlight or not
hasFlash = getApplicationContext().getPackageManager()
.hasSystemFeature(PackageManager.FEATURE_CAMERA_FLASH);
// get the camera
getCamera();
// displaying button image
toggleButtonImage();
// Switch button click event to toggle flash on/off
btnSwitch.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (isFlashOn) {
// turn off flash
turnOffFlash();
} else {
// turn on flash
turnOnFlash();
}
}
});
flashlight.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent intent= new Intent(getBaseContext(),SpeakNow.class);
startActivity(intent);
}
});
}
// Get the camera
private void getCamera() {
if (camera == null) {
try {
camera = Camera.open();
params = camera.getParameters();
} catch (RuntimeException e) {
}
}
}
private void turnOnFlash() {
if (!isFlashOn) {
if (camera == null || params == null) {
return;
}
params = camera.getParameters();
params.setFlashMode(Camera.Parameters.FLASH_MODE_TORCH);
camera.setParameters(params);
camera.startPreview();
isFlashOn = true;
toggleButtonImage();
}
}
private void turnOffFlash() {
if (isFlashOn) {
if (camera == null || params == null) {
return;
}
params = camera.getParameters();
params.setFlashMode(Camera.Parameters.FLASH_MODE_OFF);
camera.setParameters(params);
camera.stopPreview();
isFlashOn = false;
toggleButtonImage();
}
}
private void toggleButtonImage(){
if(isFlashOn){
btnSwitch.setImageResource(R.drawable.light_on);
}else{
btnSwitch.setImageResource(R.drawable.light_off);
}
}
#Override
protected void onDestroy() {
super.onDestroy();
}
#Override
protected void onPause() {
super.onPause();
// on pause turn off the flash
// turnOffFlash();
}
#Override
protected void onRestart() {
super.onRestart();
}
#Override
protected void onResume() {
super.onResume();
// on resume turn on the flash
if(hasFlash)
turnOnFlash();
}
#Override
protected void onStart() {
super.onStart();
// on starting the app get the camera params
getCamera();
}
#Override
public void onBackPressed() {
// TODO Auto-generated method stub
super.onBackPressed();
params = camera.getParameters();
params.setFlashMode(Camera.Parameters.FLASH_MODE_OFF);
camera.setParameters(params);
camera.stopPreview();
isFlashOn = false;
if (camera != null) {
camera.release();
camera = null;
}
Log.d("Camera","Back Pressed");
}
#Override
protected void onStop() {
super.onStop();
// on stop release the camera
// if (camera != null) {
// camera.release();
// camera = null;
// }
}
}

Open camera in android using Camera Api

I have tried all the existing methods out there.. but everytime the application force closes. Here is the code. Please help me debugging it.
MainActivity.java
package com.example.camera1;
import android.os.Bundle;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.hardware.Camera;
import android.hardware.Camera.PictureCallback;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.Toast;
public class MainActivity extends Activity {
private Camera cameraObject;
private ShowCamera showCamera;
private ImageView pic;
public static Camera isCameraAvailiable(){
Camera object = null;
try { object = Camera.open();
} catch (Exception e){
} return object;
}
private PictureCallback capturedIt = new PictureCallback() {
#Override
public void onPictureTaken(byte[] data, Camera camera) {
Bitmap bitmap = BitmapFactory.decodeByteArray(data , 0, data .length);
if(bitmap==null){
Toast.makeText(getApplicationContext(), "not taken", Toast.LENGTH_SHORT).show();
}
else{
Toast.makeText(getApplicationContext(), "taken", Toast.LENGTH_SHORT).show();
}
cameraObject.release();
}
};
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
pic = (ImageView)findViewById(R.id.imageView1);
cameraObject = isCameraAvailiable();
showCamera = new ShowCamera(this, cameraObject);
FrameLayout preview = (FrameLayout) findViewById(R.id.camera_preview);
preview.addView(showCamera);
}
public void snapIt(View view){
cameraObject.takePicture(null, null, capturedIt);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
ShowCamera.java
package com.example.camera1;
import java.io.IOException;
import android.content.Context;
import android.hardware.Camera;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
public class ShowCamera extends SurfaceView implements SurfaceHolder.Callback {
private SurfaceHolder holdMe;
private Camera theCamera;
public ShowCamera(Context context,Camera camera) {
super(context);
theCamera = camera;
holdMe = getHolder();
holdMe.addCallback(this);
// TODO Auto-generated constructor stub
}
#Override
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
// TODO Auto-generated method stub
}
#Override
public void surfaceCreated(SurfaceHolder holder) {
// TODO Auto-generated method stub
try {
theCamera.setPreviewDisplay(holder);
theCamera.startPreview();
} catch (IOException e)
{
}
}
#Override
public void surfaceDestroyed(SurfaceHolder holder) {
// TODO Auto-generated method stub
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<FrameLayout
android:id="#+id/camera_preview"
android:layout_width="fill_parent"
android:layout_height="199dp" >
</FrameLayout>
<Button
android:id="#+id/button_capture"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:onClick = "snapIt"
android:text="#string/Capture"/>
<ImageView
android:id="#+id/imageView1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:scaleType="fitXY"
android:src="#drawable/ic_launcher"/>
</LinearLayout>
I am making this for android gingerbread and above versions. where my target sdk is Android Kitkat.
While testing the app on gingerbread it opens the application but simply shows a white screen that is it doesnt load the layout and force closes.. please help..!!

To open the camera,use the following code appropriately:
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.GINGERBREAD) {
Camera.CameraInfo info=new Camera.CameraInfo();
for (int i=0; i < Camera.getNumberOfCameras(); i++) {
Camera.getCameraInfo(i, info);
if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
camera=Camera.open(i);
}
}
}
if (camera == null) {
camera=Camera.open();
}
Add the SurfaceView to a FrameLayout in order to display it.
Instead of returning the Camera,you could instead use the global Camera instance variable.The camera is released in onPause like this:
mCamera.release();
mCamera=null;
//remove SurfaceView from the FrameLayout you added it to
You can retain the Camera.Parameters object and use it to set the parameters to the value by placing a check in your surfaceChanged.
You could also consider starting your Camera in a seperate Thread in onCreate as it has been done here:
//This code is from AOSP ICS:
Thread mCameraOpenThread = new Thread(new Runnable() {
public void run() {
try {
mCameraDevice = Util.openCamera(Camera.this, mCameraId);
} catch (CameraHardwareException e) {
mOpenCameraFail = true;
} catch (CameraDisabledException e) {
mCameraDisabled = true;
}
}
});
This is the onCreate method:
super.onCreate(icicle);
mCameraOpenThread.start();
SurfaceView preview = (SurfaceView) findViewById(R.id.camera_preview);
SurfaceHolder holder = preview.getHolder();
holder.addCallback(this);
holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
// Make sure camera device is opened.
try {
mCameraOpenThread.join();
mCameraOpenThread = null;
}
catch(InterruptedException e)
{
//ignore
}
The link to the code is here http://android.googlesource.com/platform/packages/apps/Camera/+/ics-factoryrom-2-release/src/com/android/camera/Camera.java

Android Flashlight Won't Turn Off

I am making an app that uses touchless gestures to turn off and on the flashilight in my Android app. It turns on just fine, but I can't get it to turn back off. Thanks in advance for any help.
Here is my MainActivity.java
package com.proximitysensorapp.primo.app;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.widget.TextView;
import java.io.IOException;
import android.content.pm.PackageManager;
import android.hardware.Camera;
import android.hardware.Camera.Parameters;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceHolder.Callback;
import android.view.SurfaceView;
import android.view.View;
public class MainActivity extends Activity implements SensorEventListener, Callback
{
SensorManager sm;
Sensor s;
TextView et1;
Intent Activitynew;
Camera camera;
SurfaceView surfaceView;
SurfaceHolder surfaceHolder;
public void TurnOn(View view)
{
if (FlashAvailable() && camera != null)
{
Parameters p = camera.getParameters();
p.setFlashMode(Parameters.FLASH_MODE_TORCH);
camera.setParameters(p);
//camera.startPreview();
try
{
camera.setPreviewDisplay(surfaceHolder);
}
catch (IOException e) {
e.printStackTrace();
}
}
}
public void TurnOff(View view) {
if (FlashAvailable() && camera != null) {
Parameters p = camera.getParameters();
p.setFlashMode(Parameters.FLASH_MODE_OFF);
camera.setParameters(p);
//camera.stopPreview();
}
}
#SuppressWarnings("deprecation")
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
sm = (SensorManager) getSystemService(SENSOR_SERVICE);
s = sm.getDefaultSensor(Sensor.TYPE_PROXIMITY);
sm.registerListener(this, s, SensorManager.SENSOR_DELAY_NORMAL);
Activitynew = new Intent(MainActivity.this, Activity2.class);
surfaceView = (SurfaceView) this.findViewById(R.id.surface1);
surfaceHolder = surfaceView.getHolder();
surfaceHolder.addCallback(this);
surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
}
#Override
public void onResume()
{
super.onResume();
try {
camera = Camera.open();
} catch (Exception e) {
//---exception handling here---
Log.d("Flashlight", e.toString());
}
}
#Override
public void onPause() {
super.onPause();
TurnOff(null);
camera.release();
}
private Boolean FlashAvailable() {
return getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA_FLASH);
}
#Override
public void onAccuracyChanged(Sensor arg0, int arg1)
{
}
#Override
public void onSensorChanged(SensorEvent event)
{
if (event.sensor.getType() == Sensor.TYPE_PROXIMITY)
{
int temp = (int) event.values[0];
if (temp==1)
{
TurnOff(null);
}
else if (temp==0)
{
TurnOn(null);
}
}
}
#Override
public void surfaceCreated(SurfaceHolder holder) {
// TODO Auto-generated method stub
}
#Override
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
// TODO Auto-generated method stub
}
#Override
public void surfaceDestroyed(SurfaceHolder holder) {
// TODO Auto-generated method stub
}
}

you should add
mCamera.stopPreview();
mCamera.release();
inside your turnoff method

Android camera app gives error on back and home button

My Application gives error "Unfortunately PhotoComment has stopped" when I am pressing back or home button. But when I am reopening app from task manager it works.
this is my mainactivity.java
package com.cameratag;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.sql.Date;
import java.text.SimpleDateFormat;
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.Bitmap.CompressFormat;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.graphics.drawable.Drawable;
import android.hardware.Camera;
import android.os.Bundle;
import android.os.Environment;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
import android.widget.FrameLayout;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.TextView;
public class MainActivity extends Activity{
private CameraSurfaceView cameraView;
private ImageView imageResult;
private ImageView imageResult2;
private FrameLayout framenew;
private TextView snapPhoto;
private boolean takePicture = true;
private Bitmap image = null;
private String lastPreviewImgPath = "";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
setupcamera();
}
public void setupcamera(){
cameraView = new CameraSurfaceView(getApplicationContext());
imageResult = new ImageView(getApplicationContext());
imageResult.setBackgroundColor(Color.GRAY);
framenew = (FrameLayout) findViewById(R.id.frame);
snapPhoto = (TextView) findViewById(R.id.textView1);
framenew.addView(imageResult);
framenew.addView(cameraView);
}
public void captureHandler(View view){
if(takePicture){
cameraView.capture(jpegHandler);
}
else{
takePicture = true;
cameraView.preview();
framenew.bringChildToFront(cameraView);
imageResult.setImageBitmap(null);
snapPhoto.setText("Capture");
}
}
public void zoomMinusHandler(View view){
cameraView.zoomMinus();
}
public void zoomPilusHandler(View view){
cameraView.zoomPilus();
}
public Camera.PictureCallback jpegHandler = new Camera.PictureCallback() {
#Override
public void onPictureTaken(byte[] data, Camera camera) {
// TODO Auto-generated method stub
image = BitmapFactory.decodeByteArray(data, 0, data.length);
imageResult.setImageBitmap(image);
imageResult2 = imageResult;
LayoutParams params = imageResult.getLayoutParams();
params.width = framenew.getWidth();
params.height = framenew.getHeight();
imageResult2.setLayoutParams(params);
//framenew.bringChildToFront(imageResult);
//snapPhoto.setText("Take Picture");
//takePicture = false;
File directory = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM), "NNCam");
if (!directory.exists()) {
if (!directory.mkdirs()) {
//Log.e(TAG, "Failed to create storage directory.");
}
}
String timeStamp = new SimpleDateFormat("yyyMMdd_HHmmss").format(new Date(System.currentTimeMillis()));
String filename = "/IMG_" + timeStamp + ".jpg";
if(image!=null){
saveImage(directory.getPath(),filename,image);
cameraView.preview();
}
}
};
public void saveImage(String path, String imgname, Bitmap image){
try{
FileOutputStream fos = new FileOutputStream(path+imgname);
BufferedOutputStream stream = new BufferedOutputStream(fos);
image.compress(CompressFormat.JPEG, 100, stream);
stream.flush();
stream.close();
}
catch(FileNotFoundException e){
}
catch(IOException e){
}
lastPreviewImgPath = path+imgname;
Bitmap bitmap = BitmapFactory.decodeFile(lastPreviewImgPath);
ImageView myImageView = (ImageView)findViewById(R.id.lastPreview);
myImageView.setImageBitmap(bitmap);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public void onSaveInstanceState(Bundle savedInstanceState) {
super.onSaveInstanceState(savedInstanceState);
cameraView.release();
}
#Override
public void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
cameraView.reconnect();
}
#Override
public void onPause() {
super.onPause();
cameraView.release();
}
}
and this is surfaceview class
package com.cameratag;
import java.io.IOException;
import java.util.List;
import android.content.Context;
import android.content.res.Configuration;
import android.hardware.Camera;
import android.view.Display;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.WindowManager;
public class CameraSurfaceView extends SurfaceView implements SurfaceHolder.Callback{
private Context context;
private SurfaceHolder mHolder;
public Camera camera = null;
public int zoomValue = 0;
public CameraSurfaceView(Context context) {
super(context);
mHolder = getHolder();
mHolder.addCallback(this);
mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
// TODO Auto-generated constructor stub
}
#Override
public void surfaceChanged(SurfaceHolder arg0, int arg1, int arg2, int arg3) {
// TODO Auto-generated method stub
Camera.Parameters parameters = camera.getParameters();
List<Camera.Size> sizes = parameters.getSupportedPictureSizes();
Camera.Size cs = sizes.get(0);
List<Camera.Size> sizes2 = parameters.getSupportedPreviewSizes();
Camera.Size cs2 = sizes2.get(0);
parameters.setPreviewSize(cs2.width, cs2.height);
parameters.setPictureSize(cs.width, cs.height);
camera.setParameters(parameters);
camera.startPreview();
}
#Override
public void surfaceCreated(SurfaceHolder arg0) {
// TODO Auto-generated method stub
camera = Camera.open();
try {
camera.setPreviewDisplay(mHolder);
} catch (IOException e) {
// TODO Auto-generated catch block
//e.printStackTrace();
}
int rrr = 0;
Display display = ((WindowManager) getContext().getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
int rotation = display.getRotation();
if(rotation==0)rrr=90;
else if(rotation==1)rrr=0;
else if(rotation==3)rrr=180;
else rrr=270;
camera.setDisplayOrientation(rrr);
}
#Override
public void surfaceDestroyed(SurfaceHolder arg0) {
// TODO Auto-generated method stub
camera.stopPreview();
camera = null;
}
public void capture(Camera.PictureCallback jpegHandler){
camera.takePicture(null, null, jpegHandler);
}
#Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
int rrr = 0;
Display display = ((WindowManager) getContext().getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
int rotation = display.getRotation();
if(rotation==0)rrr=90;
else if(rotation==1)rrr=0;
else if(rotation==3)rrr=180;
else rrr=270;
//camera.stopPreview();
camera.setDisplayOrientation(rrr);
//camera.startPreview();
}
public void preview(){
camera.startPreview();
}
public void reconnect(){
try {
camera.reconnect();
} catch (IOException e) {
// TODO Auto-generated catch block
//e.printStackTrace();
}
}
public void zoomMinus() {
Camera.Parameters parameters = camera.getParameters();
// TODO Auto-generated method stub
if(parameters.isZoomSupported()){
if(zoomValue>0){
zoomValue-=2;
parameters.setZoom(zoomValue);
if(parameters.isSmoothZoomSupported()){
camera.startSmoothZoom(zoomValue);
}
else{
camera.setParameters(parameters);
}
}
}
}
public void zoomPilus() {
Camera.Parameters parameters = camera.getParameters();
// TODO Auto-generated method stub
if(parameters.isZoomSupported()){
if(zoomValue<parameters.getMaxZoom()){
zoomValue+=2;
parameters.setZoom(zoomValue);
if(parameters.isSmoothZoomSupported()){
camera.startSmoothZoom(zoomValue);
}
else{
camera.setParameters(parameters);
}
}
}
}
public void release() {
// TODO Auto-generated method stub
camera.setPreviewCallback(null);
camera.stopPreview();
camera.release();
}
}
Please help.

#Override
protected void onPause() {
super.onPause();
// if (inPreview) {
// mCamera.stopPreview();
// }
// mCamera.release();
// mCamera = null;
// inPreview = false;
mCamera.setPreviewCallback(null);
super.onPause();
// mCamera.stopPreview();
}

I was having a similar issue, the trick is to also setup the camera inside of onResume().
The issue was that the app does not call onCreate() every time you go to an activity with the back button, sometimes it simply pauses the activity. onResume() is called whenever the activity returns to the foreground and is a more reliable place to set up the camera.
#Override
protected void onResume()
{
super.onResume();
if( camera == null )
{
camera = Camera.open();
}
}

try to put your release code in try catch block
try{
if (camera != null){
camera.setPreviewCallback(null);
camera.stopPreview();
camera.release();
}
}

I have found the solution for my own. You only need to change surfaceDestroyed method to this.
#Override
public void surfaceDestroyed(SurfaceHolder arg0) {
// TODO Auto-generated method stub
try{
camera.stopPreview();
camera.release();
camera = null;
}
catch(NullPointerException e){
//e.printStackTrace();
}
}
and on onRestoreInstanceState to this.
#Override
public void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
cameraView = null;
setupcamera();
//cameraView.reconnect();
}

How to focus camera shot?

I am able to run a code to take pictures but the resulting image is undesirable. In the following image, the Google logo should be at the center, but it isn't.
I'm using the following code:
CameraView.java
package com.pictures;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.PixelFormat;
import android.graphics.Bitmap.CompressFormat;
import android.hardware.Camera;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.view.View.OnClickListener;
import android.view.View.OnTouchListener;
public class CamaraView extends Activity implements SurfaceHolder.Callback,
OnClickListener {
static final int FOTO_MODE = 0;
private static final String TAG = "CameraTest";
Camera mCamera;
boolean mPreviewRunning = false;
private Context mContext = this;
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
Log.e(TAG, "onCreate");
Bundle extras = getIntent().getExtras();
getWindow().setFormat(PixelFormat.TRANSLUCENT);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.main);
mSurfaceView = (SurfaceView) findViewById(R.id.surface_camera);
mSurfaceView.setOnClickListener(this);
mSurfaceHolder = mSurfaceView.getHolder();
mSurfaceHolder.addCallback(this);
mSurfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
}
#Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
}
Camera.PictureCallback mPictureCallback = new Camera.PictureCallback() {
public void onPictureTaken(byte[] imageData, Camera c) {
if (imageData != null) {
Intent mIntent = new Intent();
StoreByteImage(mContext, imageData, 50,
"ImageName");
mCamera.startPreview();
setResult(FOTO_MODE, mIntent);
finish();
}
}
};
protected void onResume() {
Log.e(TAG, "onResume");
super.onResume();
}
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
}
protected void onStop() {
Log.e(TAG, "onStop");
super.onStop();
}
public void surfaceCreated(SurfaceHolder holder) {
Log.e(TAG, "surfaceCreated");
mCamera = Camera.open();
}
public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
Log.e(TAG, "surfaceChanged");
// XXX stopPreview() will crash if preview is not running
if (mPreviewRunning) {
mCamera.stopPreview();
}
Camera.Parameters p = mCamera.getParameters();
p.setPreviewSize(w, h);
mCamera.setParameters(p);
try {
mCamera.setPreviewDisplay(holder);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
mCamera.startPreview();
mPreviewRunning = true;
}
public void surfaceDestroyed(SurfaceHolder holder) {
Log.e(TAG, "surfaceDestroyed");
mCamera.stopPreview();
mPreviewRunning = false;
mCamera.release();
}
private SurfaceView mSurfaceView;
private SurfaceHolder mSurfaceHolder;
public void onClick(View arg0) {
mCamera.takePicture(null, mPictureCallback, mPictureCallback);
}
public static boolean StoreByteImage(Context mContext, byte[] imageData,
int quality, String expName) {
File sdImageMainDirectory = new File( Environment.getExternalStorageDirectory() + "/Engagia");
FileOutputStream fileOutputStream = null;
String nameFile;
try {
BitmapFactory.Options options=new BitmapFactory.Options();
options.inSampleSize = 1;
Bitmap myImage = BitmapFactory.decodeByteArray(imageData, 0,
imageData.length,options);
fileOutputStream = new FileOutputStream(
sdImageMainDirectory.toString() +"/image.jpg");
BufferedOutputStream bos = new BufferedOutputStream(
fileOutputStream);
myImage.compress(CompressFormat.JPEG, quality, bos);
bos.flush();
bos.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return true;
}
}
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.pictures"
android:versionCode="1"
android:versionName="1.0">
<application android:icon="#drawable/icon" android:label="#string/app_name">
<activity android:name=".CamaraView"
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>
<uses-permission android:name="android.permission.CAMERA"></uses-permission>
<uses-feature android:name="android.hardware.camera" />
<uses-feature android:name="android.hardware.camera.autofocus" />
</manifest>
main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:orientation="vertical">
<SurfaceView android:id="#+id/surface_camera"
android:layout_width="fill_parent" android:layout_height="10dip"
android:layout_weight="1">
</SurfaceView>
</LinearLayout>
Anyone knows the solution for this? Many thanks for any help! :)

I believe, that phone won't center the image inside viewfinder. User should do it by moving the phone.
To achieve autofocus, take a look at autoFocus() API.