PreferenceHelper.java

package by.istin.android.xcore.preference;

import android.content.Context;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.net.Uri;
import android.os.Bundle;

import by.istin.android.xcore.ContextHolder;
import by.istin.android.xcore.utils.BytesUtils;
import by.istin.android.xcore.utils.StringUtil;

public class PreferenceHelper {

    private static final String SETTINGS = "settings";
    public static final String STRING_ARRAY_DELIM = "====DELIM====";

    public static Editor editor() {
        Context ctx = ContextHolder.getInstance().getContext();
        return ctx.getSharedPreferences(SETTINGS, Context.MODE_PRIVATE).edit();
    }

    public static void set(String key, boolean value) {
		Editor editor = editor();
		editor.putBoolean(key, value);
		editor.commit();
	}
	
	public static boolean getBoolean(String key, boolean def) {
		Context ctx = ContextHolder.getInstance().getContext();
		SharedPreferences savedSession = ctx.getSharedPreferences(SETTINGS,
				Context.MODE_PRIVATE);
		return savedSession.getBoolean(key, def);
	}
	
	public static void set(String key, int value) {
		Editor editor = editor();
		editor.putInt(key, value);
		editor.commit();
	}
	
	public static int getInt(String key, int def) {
		Context ctx = ContextHolder.getInstance().getContext();
		SharedPreferences savedSession = ctx.getSharedPreferences(SETTINGS,
				Context.MODE_PRIVATE);
		return savedSession.getInt(key, def);
	}

	public static void set(String key, long value) {
		Editor editor = editor();
		editor.putLong(key, value);
		editor.commit();
	}
	
	public static void clear() {
		Editor editor = editor();
		editor.clear();
		editor.commit();
	}
	
	public static long getLong(String key, long def) {
		Context ctx = ContextHolder.getInstance().getContext();
		SharedPreferences savedSession = ctx.getSharedPreferences(SETTINGS,
				Context.MODE_PRIVATE);
		return savedSession.getLong(key, def);
	}
	
	public static void set(String key, float value) {
		Editor editor = editor();
		editor.putFloat(key, value);
		editor.commit();
	}
	
	public static float getFloat(String key, float def) {
		Context ctx = ContextHolder.getInstance().getContext();
		SharedPreferences savedSession = ctx.getSharedPreferences(SETTINGS,
				Context.MODE_PRIVATE);
		return savedSession.getFloat(key, def);
	}
	
	public static void set(String key, String value) {
		Editor editor = editor();
		editor.putString(key, value);
		editor.commit();
	}
	
	public static String getString(String key, String def) {
		Context ctx = ContextHolder.getInstance().getContext();
		SharedPreferences savedSession = ctx.getSharedPreferences(SETTINGS,
				Context.MODE_PRIVATE);
		return savedSession.getString(key, def);
	}
	
	public static void set(String key, Uri value) {
		set(key, value.toString());
	}
	
	public static Uri getUri(String key, Uri def) {
		String value = getString(key, null);
		if (value == null) {
			return def;
		}
		return Uri.parse(value);
	}

	public static void set(String key, byte[] byteArray) {
		Editor editor = editor();
		if (byteArray != null) {
			editor.putString(key, new String(byteArray));
		} else {
			editor.putString(key, null);
		}
		editor.commit();		
	}
	
	public static byte[] getByteArray(String key, byte[] defValue) {
		Context ctx = ContextHolder.getInstance().getContext();
		SharedPreferences savedSession = ctx.getSharedPreferences(SETTINGS,
				Context.MODE_PRIVATE);
		String value = savedSession.getString(key, null);
		if (value == null) {
			return defValue;
		}
		return value.getBytes();
	}
	
	public static void set(String key, Bundle bundle) {
		byte[] byteArray = BytesUtils.toByteArray(bundle);
		set(key, byteArray);
	}
	
	public static Bundle getBundle(String key, Bundle bundle) {
		Context ctx = ContextHolder.getInstance().getContext();
		SharedPreferences savedSession = ctx.getSharedPreferences(SETTINGS,
				Context.MODE_PRIVATE);
		String value = savedSession.getString(key, null);
		if (value == null) {
			return bundle;
		}
		return BytesUtils.bundleFromByteArray(value.getBytes());
	}

    public static String[] getStringArray(String key, String[] defValue) {
        String value = getString(key, null);
        if (value == null) {
            return defValue;
        }
        return value.split(STRING_ARRAY_DELIM);
    }

    public static void set(String key, String[] value) {
       if (value == null) {
           set(key, (String)null);
       } else {
           set(key, StringUtil.join(STRING_ARRAY_DELIM, false, value));
       }
    }

}