How to get front and back camera's megapixel t

问题:

How to identify front and back camera's Megapixel of an android device by using Android code? I had tried CameraInfo but am not getting megapixel. For example, To identify Model of device we are using this android.os.Build.MODEL . Likewise any method to identify Megapixel of front and back camera. Advance thanks for any help.

If the device is "Videocon A53" features are (540x960 pixel) display and runs Android 4.1 Jelly Bean, 8-megapixel rear camera, 2-megapixel front-facing camera. Now i want to get that 8 megapixel and 2 megapixel by android code

回答1:

I got megapixel by combining three different answers of stack overflow friends.

                Camera camera=Camera.open(0);    // For Back Camera
            android.hardware.Camera.Parameters params = camera.getParameters();
            List sizes = params.getSupportedPictureSizes();
            Camera.Size  result = null;

            ArrayList<Integer> arrayListForWidth = new ArrayList<Integer>();
            ArrayList<Integer> arrayListForHeight = new ArrayList<Integer>();

            for (int i=0;i<sizes.size();i++){
                result = (Size) sizes.get(i);
                arrayListForWidth.add(result.width);
                arrayListForHeight.add(result.height);
                Log.debug("PictureSize", "Supported Size: " + result.width + "height : " + result.height);  
                System.out.println("BACK PictureSize Supported Size: " + result.width + "height : " + result.height);  
            } 
            if(arrayListForWidth.size() != 0 && arrayListForHeight.size() != 0){
                System.out.println("Back max W :"+Collections.max(arrayListForWidth));              // Gives Maximum Width
                System.out.println("Back max H :"+Collections.max(arrayListForHeight));                 // Gives Maximum Height
                            System.out.println("Back Megapixel :"+( ((Collections.max(arrayListForWidth)) * (Collections.max(arrayListForHeight))) / 1024000 ) );
            }
            camera.release();

            arrayListForWidth.clear();
            arrayListForHeight.clear();

            camera=Camera.open(1);        //  For Front Camera
            android.hardware.Camera.Parameters params1 = camera.getParameters();
            List sizes1 = params1.getSupportedPictureSizes();
            Camera.Size  result1 = null;
            for (int i=0;i<sizes1.size();i++){
                result1 = (Size) sizes1.get(i);
                arrayListForWidth.add(result1.width);
                arrayListForHeight.add(result1.height);
                Log.debug("PictureSize", "Supported Size: " + result1.width + "height : " + result1.height);  
                System.out.println("FRONT PictureSize Supported Size: " + result1.width + "height : " + result1.height);  
            } 
            if(arrayListForWidth.size() != 0 && arrayListForHeight.size() != 0){
                System.out.println("FRONT max W :"+Collections.max(arrayListForWidth));
                System.out.println("FRONT max H :"+Collections.max(arrayListForHeight));
                            System.out.println("FRONT Megapixel :"+( ((Collections.max(arrayListForWidth)) * (Collections.max(arrayListForHeight))) / 1024000 ) );
            }

            camera.release();

For obtaining megapixel, (Biggest Width x Height) / 1024000 = Megapixel