StringPreference.java

/*
 * Copyright (c) 2014. ThanksMister LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.thanksmister.btcblue.data.prefs;

import android.content.SharedPreferences;

public class StringPreference
{
    
    private final SharedPreferences preferences;
    private final String key;
    private final String defaultValue;

    public StringPreference(SharedPreferences preferences, String key) {
        this(preferences, key, null);
    }

    public StringPreference(SharedPreferences preferences, String key, String defaultValue) {
        this.preferences = preferences;
        this.key = key;
        this.defaultValue = defaultValue;
    }

    public String get() {
        return preferences.getString(key, defaultValue);
    }

    public boolean isSet() {
        return preferences.contains(key);
    }

    public void set(String value) {
        preferences.edit().putString(key, value).apply();
    }

    public void delete() {
        preferences.edit().remove(key).apply();
    }
}