update Camera Parameters Preference - Android Camera

Android examples for Camera:Camera Feature

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  2. Android
  3. Camera
  4. Camera Feature

Description

update Camera Parameters Preference

Demo Code


import java.util.List;
import android.content.Context;
import android.hardware.Camera;
import android.hardware.Camera.Parameters;
import android.hardware.Camera.Size;
import android.media.CameraProfile;
import android.util.Log;

public class Main{
    public static void updateCameraParametersPreference(Context ctx,
            Camera cam) {/*from   w w w  . j a  v  a  2s  .  c o m*/

        // get Camera parameters
        Camera.Parameters params = cam.getParameters();

        List<String> focusModes = params.getSupportedFocusModes();
        if (focusModes
                .contains(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE)) {
            // set the focus mode
            params.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE);
        }

        //set the camera picture size
        initialCameraPictureSize(ctx, params);

        // Set JPEG quality.
        int jpegQuality = CameraProfile.getJpegEncodingQualityParameter(0,
                CameraProfile.QUALITY_HIGH);
        params.setJpegQuality(jpegQuality);

        List<String> flashModes = params.getSupportedFlashModes();
        if (flashModes.contains(Camera.Parameters.FLASH_MODE_AUTO)) {
            // set the focus mode
            params.setFlashMode(Camera.Parameters.FLASH_MODE_AUTO);
        }

        List<String> whiteBalanceModes = params.getSupportedWhiteBalance();
        if (whiteBalanceModes
                .contains(Camera.Parameters.WHITE_BALANCE_AUTO)) {
            // set the focus mode
            params.setWhiteBalance(Camera.Parameters.WHITE_BALANCE_AUTO);
        }

        // set Camera parameters
        cam.setParameters(params);

    }
    public static void initialCameraPictureSize(Context context,
            Parameters parameters) {
        // When launching the camera app first time, we will set the picture
        // size to the first one in the list defined in "arrays.xml" and is also
        // supported by the driver.
        List<Size> supported = parameters.getSupportedPictureSizes();
        if (supported == null)
            return;
        for (String candidate : context.getResources().getStringArray(
                R.array.pref_camera_picturesize_entryvalues)) {
            if (setCameraPictureSize(candidate, supported, parameters)) {
                return;
            }
        }
    }
    public static boolean setCameraPictureSize(String candidate,
            List<Size> supported, Parameters parameters) {
        int index = candidate.indexOf('x');
        if (index == -1)
            return false;
        int width = Integer.parseInt(candidate.substring(0, index));
        int height = Integer.parseInt(candidate.substring(index + 1));
        for (Size size : supported) {
            if (size.width == width && size.height == height) {
                parameters.setPictureSize(width, height);
                return true;
            }
        }
        return false;
    }
}

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