init Camera with value from SharedPreferences - Android Camera

Android examples for Camera:Camera Feature

  1. HOME
  2. Android
  3. Camera
  4. Camera Feature

Description

init Camera with value from SharedPreferences

Demo Code


import java.util.StringTokenizer;
import android.content.Context;
import android.content.SharedPreferences;
import android.hardware.Camera;
import android.preference.PreferenceManager;
import android.widget.Toast;

public class Main{
    private static SharedPreferences mSharedPreferences;
    public static void initCamera(Context context) {
        CameraInitHelper.context = context;
        initCameraPreferences();/*from  w  w  w. j a v a 2s .  c o  m*/
    }
    private static void initCameraPreferences() {

        // Read preferences
        mSharedPreferences = PreferenceManager
                .getDefaultSharedPreferences(context);

        // If this application is newly installed, read hardware information of the device
        if (!mSharedPreferences.getBoolean("initialized", false)) {
            Camera camera = Camera.open();
            if (camera != null) {
                Camera.Parameters params = camera.getParameters();
                createCameraPreferences(params);
                camera.release();
            } else {
                Toast.makeText(context, R.string.errNoCamera,
                        Toast.LENGTH_LONG).show();
            }
        }
    }
    private static void createCameraPreferences(Camera.Parameters params) {

        SharedPreferences.Editor editor = mSharedPreferences.edit();
        editor.putBoolean("initialized", true);

        StringTokenizer strParams = new StringTokenizer(params.flatten(),
                ";");
        while (strParams.hasMoreTokens()) {
            StringTokenizer entries = new StringTokenizer(
                    strParams.nextToken(), "=");
            String key, values;
            if (entries.countTokens() == 2) {
                key = entries.nextToken();
                values = entries.nextToken();
            } else {
                key = entries.nextToken();
                values = "";
            }

            for (int i = 0; i < CameraParameters.SUPPORT_PARAMS.length; i++) {
                if (key.compareTo(CameraParameters.SUPPORT_PARAMS[i]) == 0) {
                    editor.putString(key, values);
                }
            }
        }

        editor.commit();

        // For JPEG Thumbnail size, it requires additional task
        String thumbnailSize = mSharedPreferences.getString(
                "jpeg-thumbnail-width", "")
                + "x"
                + mSharedPreferences.getString("jpeg-thumbnail-height", "");
        editor.putString("thumbnail-size", thumbnailSize);
        editor.commit();
    }
}

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