如何在android中自动对焦本机相机框架到A4大小框架

Question

how to autofocus native camera in android to A4 size frame so through camera i can directully take photo of A4 size paper with below sizes in ixel

size of A4 in 72dpi = 595*842px

is it possible? in android

Answer 1

You must get the parameters of the camera after opening the camera and then get parameters and set the picture size accordingly

camera = Camera.open();
Parameters param = camera.getParameters();
params.setPictureSize(495,842); //this sets the A4 size image

In case of using intent:

Intent photoPickerIntent = new Intent("android.media.action.IMAGE_CAPTURE");
            photoPickerIntent.putExtra("crop", "true");
            photoPickerIntent.putExtra("outputX", 495);
            photoPickerIntent.putExtra("outputY", 842);
            photoPickerIntent.putExtra("aspectX", 1);
            photoPickerIntent.putExtra("aspectY", 1);
            photoPickerIntent.putExtra("scale", true);
            photoPickerIntent.putExtra(MediaStore.EXTRA_OUTPUT, getTempUri());
            photoPickerIntent.putExtra("outputFormat",
                    Bitmap.CompressFormat.JPEG.toString());
            startActivityForResult(photoPickerIntent, RESULT_LOAD_IMAGE);