Soru & Cevap

Ön Kamerayla Gizli Fotoğraf Çekmek

06.11.2015 - 11:02

Herkese merhaba..

Geliştirme olduğum bir uygulama için güvenlik amacıyla bir butona kimin bastıığını görmek istiyorum.Bu yüzden o butona basan kişinin ön kameradan fotografını nasıl çekebilirim.Kişinin bundan haberi olmaması lazım. Yani kamera uygulamasına gitmek istemiyorum kendi uygulamam içinde kalarak kameradan görüntü almak istiyorum.Bunun için döküman yada fikir verebilecek olan var mı?

9 Görüntülenme

1 Cevap

Sitedeki sorulara cevap verebilmek için giriş yapın ya da üye olun.

picture-52022-1431540680.jpg
yazilimcikodcu
09.11.2015 - 03:48

 



public class MainActivity extends Activity implements SurfaceHolder.Callback {


	private Camera mCamera;
	private Button fCekBtn,img_yukle;
	private SurfaceView srfView;
	private PackageManager pm;
	static int sayac=0;
	private Boolean hasCamera = false;
	private static String TAG=MainActivity.class.getSimpleName();
	ImageView img;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		fCekBtn = (Button) findViewById(com.necatievren.camera.R.id.fCekBtn);
		img_yukle= (Button) findViewById(R.id.img_yukle);
		srfView = (SurfaceView) findViewById(com.necatievren.camera.R.id.surfaceView);
		img=(ImageView)findViewById(R.id.imgPicker);
		pm = this.getPackageManager();


		if(pm.hasSystemFeature(PackageManager.FEATURE_CAMERA_FRONT)){
			hasCamera = true;
			SurfaceHolder holder = srfView.getHolder();
			holder.addCallback(this);
//			holder.setFormat(PixelFormat.TRANSPARENT);
            holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
			holder.setFixedSize(1000, 400);

//srfView değerini xml içinde 1px-1px en ve yükseklik verdiler
         
		}else{
			Log.v(TAG, " Kamera yok");
		}
		//----------------------------------
		fCekBtn.setOnClickListener(new View.OnClickListener() {
        	@Override
			public void onClick(View arg0) {
				if(hasCamera){
					takePicture();
					
				}else{
					Log.v(TAG, " Kamera yok");
				}
	
			}
		});
		//----------------------------------
		img_yukle.setOnClickListener(new View.OnClickListener() {
			@Override
			public void onClick(View v) {
				final File sd_path = Environment.getExternalStorageDirectory();///mnt/sdcard
				final String sd_filePath = "/BeoReset/Backup/";
				final String sd_dbfilePath = sd_path + sd_filePath;
				loadImageFromStorage(sd_dbfilePath);
			}
		});
	}
	//----------------------------------------------------------------------------------------------
	@Override
	public void surfaceChanged(SurfaceHolder arg0, int arg1, int arg2, int arg3) {}
	//----------------------------------------------------------------------------------------------
	@TargetApi(Build.VERSION_CODES.GINGERBREAD)
	@Override
	public void surfaceCreated(SurfaceHolder holder) {
		 mCamera=onKamerayiAc();
//		 mCamera= Camera.open();
		 mCamera.setDisplayOrientation(0);
	     try {
	            mCamera.setPreviewDisplay(holder);
	            mCamera.startPreview();
	     } catch (IOException e) { e.printStackTrace();  }
	}
	//----------------------------------------------------------------------------------------------
	@Override
	public void surfaceDestroyed(SurfaceHolder arg0) {
		mCamera.stopPreview();
		mCamera.release();
	}
	//----------------------------------------------------------------------------------------------
	private void takePicture(){
//		mCamera=onKamerayiAc();
		mCamera.takePicture(_shutterCallBack, _rawCallBack, _jpgCallBack);
	}
	//----------------------------------------------------------------------------------------------
	ShutterCallback _shutterCallBack = new ShutterCallback(){
		@Override
		public void onShutter() {//implement method
		}
	};
	//----------------------------------------------------------------------------------------------
	PictureCallback _rawCallBack=new PictureCallback(){
		@Override
		public void onPictureTaken(byte[] arg0, Camera arg1) {//implement method
		}
	};
	//----------------------------------------------------------------------------------------------
	PictureCallback _jpgCallBack = new PictureCallback(){
		@Override
		public void onPictureTaken(byte[] data, Camera camera) {
			final File sd_path= Environment.getExternalStorageDirectory();///mnt/sdcard
			final String sd_filePath="/Beo/Backup/";
			final String sd_dbfilePath =sd_path +sd_filePath;
			File currentFile  = new File(sd_dbfilePath);
			if (!currentFile.exists()) {
				currentFile.mkdirs();
				FileOutputStream foutStream = null;
				try {
					foutStream = new FileOutputStream(sd_dbfilePath+"/beo_img"+ ++sayac+".jpg");
					foutStream.write(data);
					foutStream.close();
				} catch (FileNotFoundException e) {
					e.printStackTrace();
					Log.e("","Dosya Bulunamadı: "+e.toString());
				} catch (IOException e) {
					e.printStackTrace();
					Log.e("", "Erişim Hatası: " + e.toString());
				}
			}else{
				FileOutputStream foutStream = null;
				try {
					foutStream = new FileOutputStream(sd_dbfilePath+"/beo_img"+ ++sayac+".jpg");
					foutStream.write(data);
					foutStream.close();
				} catch (FileNotFoundException e) {
					e.printStackTrace();
					Log.e("","Dosya Bulunamadı: "+e.toString());
				} catch (IOException e) {
					e.printStackTrace();
					Log.e("", "Erişim Hatası: " + e.toString());
				}
			}
		}
	};
	//----------------------------------------------------------------------------------------------
	@TargetApi(Build.VERSION_CODES.GINGERBREAD)
	private Camera onKamerayiAc() {
		Log.d(TAG,"_adim_1");
		int cameraCount = 0;
		Camera cam = null;Log.d(TAG,"_adim_2");
		Camera.CameraInfo cameraInfo = new Camera.CameraInfo();Log.d(TAG,"_adim_3");
		cameraCount = Camera.getNumberOfCameras();Log.d(TAG,"_adim_4---"+cameraCount);
		for (int camIdx = 0; camIdx < cameraCount; camIdx++) {Log.d(TAG,"_adim_5");
			Camera.getCameraInfo(camIdx, cameraInfo);Log.d(TAG, "_adim_6");
			if (cameraInfo.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
				try {
					cam = Camera.open(camIdx);Log.d(TAG,"_adim_7");
				} catch (RuntimeException e) {
					Log.e(TAG, "Camera failed to open: " + e.getLocalizedMessage());
				}
			}
		}
		return cam;
	}
	//----------------------------------------------------------------------------------------------
	private void loadImageFromStorage(String path)//tekrar sdcarttan yüklüyoruz
	{
		try {
			File f=new File(path, "/nvs_reset"+ ++sayac+".jpg");
			Bitmap b = BitmapFactory.decodeStream(new FileInputStream(f));
			img.setImageBitmap(b);
		}
		catch (FileNotFoundException e)
		{e.printStackTrace();}

	}
}