Simple class which wrapper into self SharedPrefernce object and work with it.

AppSettings.java

package com.sirelon;

import android.content.Context;
import android.content.SharedPreferences;

/**
 * @author romanishin
 * @since 21.08.15.
 */
public class AppSettings {

    private static final String PREF_NAME = "{prefernceName}}";
    private final SharedPreferences mPref;

    public AppSettings(Context context) {
        this.mPref = context.getSharedPreferences(PREF_NAME, Context.MODE_PRIVATE);
    }

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

    public void putInt(String key, int value) {
        mPref.edit().putInt(key, value).apply();
    }

    public void putLong(String key, long value) {
        mPref.edit().putLong(key, value).apply();
    }

    public boolean exist(String key) {
        return mPref.contains(key);
    }

    public String getString(String key) {
        return mPref.getString(key, "");
    }

    public int getInt(String key) {
        return mPref.getInt(key, -1);
    }

    public long getLong(String key) {
        return mPref.getLong(key, -1);
    }

    public void remove(String key){
        mPref.edit().remove(key).apply();
    }

    public void clearAll() {
        mPref.edit().clear().apply();
    }
}