Open front camera in android program

How to access front camera in android/get number of cameras in android/Program to open front camera in android

Using the code explained below, we can easily find out number of cameras in your android device.

Camera.CameraInfo cameraInfo = newCamera.CameraInfo();

        Log.d("No of cameras",Camera.getNumberOfCameras()+"");

        for (int camNo = 0; camNo < Camera.getNumberOfCameras(); camNo++) {

            CameraInfo camInfo = new CameraInfo();

            Camera.getCameraInfo(camNo, camInfo);

           

            if (camInfo.facing==(Camera.CameraInfo.CAMERA_FACING_FRONT)) {

                mCamera = Camera.open(camNo);

            }

        }

        if (mCamera == null) {

           // no front-facing camera, use the first back-facing camera instead.

           // you may instead wish to inform the user of an error here...

             mCamera = Camera.open();

        }

A sample program that take photo using front camera (or back camera if there is no front camera)as background service

package com.project.smartstay.browserapplication; import java.io.IOException; import android.app.Service; import android.content.Context; import android.content.Intent; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.hardware.Camera; import android.hardware.Camera.CameraInfo; import android.hardware.Camera.Parameters; import android.media.AudioManager; import android.media.FaceDetector; import android.media.FaceDetector.Face; import android.os.IBinder; import android.util.Log; import android.view.SurfaceHolder; import android.view.SurfaceView; public class CameraService extends Service implements SurfaceHolder.Callback{       //a variable to store a reference to the Surface View at the main.xml file     private SurfaceView sv;     boolean previewing = false;     //a bitmap to display the captured image             //Camera variables       //a surface holder       private SurfaceHolder sHolder;        //a variable to control the camera       private Camera mCamera=null;       //the camera parameters       private Parameters parameters;             /** Called when the activity is first created. */     @Override     public void onCreate()     {         super.onCreate();         Camera.CameraInfo cameraInfo = new Camera.CameraInfo();         Log.d("No of cameras",Camera.getNumberOfCameras()+"");         for (int camNo = 0; camNo < Camera.getNumberOfCameras(); camNo++) {             CameraInfo camInfo = new CameraInfo();             Camera.getCameraInfo(camNo, camInfo);                         if (camInfo.facing==(Camera.CameraInfo.CAMERA_FACING_FRONT)) {                 mCamera = Camera.open(camNo);             }         }         if (mCamera == null) {            // no front-facing camera, use the first back-facing camera instead.            // you may instead wish to inform the user of an error here...              mCamera = Camera.open();         }        //        params.             sv = new SurfaceView(getApplicationContext());         Log.d("Entered","dfdf");                 //get the Surface View at the main.xml file            }         @Override     public int onStartCommand(Intent intent, int flags, int startId) {        Log.d("Entered onstart","dfdf");         //          Toast.makeText(getApplicationContext(), "wrking ", Toast.LENGTH_LONG).show();        try {                                                    //set camera parameters                  mCamera.setParameters(parameters);                  mCamera.startPreview();                  mCamera.takePicture(null, null, mCall);                          } catch (IOException e) {                   // TODO Auto-generated catch block                   e.printStackTrace();             }                        //Get a surface          sHolder = sv.getHolder();                 //add the callback interface methods defined below as the Surface View callbacks                                        //tells Android that this surface will have its data constantly replaced          sHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);// TODO Auto-generated method stub                         return super.onStartCommand(intent, flags, startId);     }             Camera.PictureCallback mCall = new Camera.PictureCallback()     {              public void onPictureTaken(byte[] data, Camera camera)        {              //decode the data obtained by the camera into a Bitmap       FileOutputStream outStream = null;                   try{                       outStream = new FileOutputStream("/sdcard/Image.jpg");                       outStream.write(data);                       outStream.close();                   } catch (FileNotFoundException e){                       Log.d("CAMERA", e.getMessage());                   } catch (IOException e){                       Log.d("CAMERA", e.getMessage());                   }                         }     };       @Override       public IBinder onBind(Intent intent) {             // TODO Auto-generated method stub             return null;       }             public void surfaceChanged(SurfaceHolder holder, int format, int width,                   int height) {             if(previewing){                   mCamera.stopPreview();                   previewing = false;             }                   }       public void surfaceCreated(SurfaceHolder holder) {             // TODO Auto-generated method stub                   }             public void surfaceDestroyed(SurfaceHolder holder) {             mCamera.stopPreview();             mCamera.release();             mCamera = null;             previewing = false;                   }             }

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Take photo without intent
Capture image without preview
Capture image without surface view as a background service 
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