Android camera support size for parameter

Camera mCamera = Camera.open(Camera.CameraInfo.CAMERA_FACING_FRONT);
Camera.Parameters params = mCamera.getParameters();
List supportSizes = params.getSupportedPreviewSizes();
Camera.Size selectedSize = supportSizes.get(3); //choose the suitable size
params.setPreviewSize(selectedSize.width, selectedSize.height);
mCamera.setParameters(params);