android 把簡單的數據存儲在本地

一般是用於應用的登錄判斷以及用戶信息在本地的緩存，總的來說挺好用的。

package com.ladongjiguang.meikuangwuziyunshu.PublicClass;

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

/**
 * Created by admin on 2016/8/9.
 */
public class SharedPreferencesUtil {
    public static String CONFIG =  "config";
    private static SharedPreferences sharedPreferences;

    public static void saveBooleanData(Context context, String key, boolean value){
        if(sharedPreferences==null){
            sharedPreferences = context.getSharedPreferences(CONFIG, Context.MODE_PRIVATE);
        }
        sharedPreferences.edit().putBoolean(key, value).commit();
    }

    public static boolean getBooleanData(Context context,String key,boolean defValue){
        if(sharedPreferences==null){
            sharedPreferences = context.getSharedPreferences(CONFIG, Context.MODE_PRIVATE);
        }
        return sharedPreferences.getBoolean(key, defValue);
    }

    public static void saveStringData(Context context,String key,String value){
        if(sharedPreferences==null){
            sharedPreferences = context.getSharedPreferences(CONFIG, Context.MODE_PRIVATE);
        }
        sharedPreferences.edit().putString(key, value).commit();
    }

    public static String getStringData(Context context,String key,String defValue){
        if(sharedPreferences==null){
            sharedPreferences = context.getSharedPreferences(CONFIG, Context.MODE_PRIVATE);
        }
        return sharedPreferences.getString(key, defValue);
    }
}

以判斷是否登錄爲例子用法：

存儲

SharedPreferencesUtil.saveBooleanData(LoginActivity.this,"Login",true);

提取

SharedPreferencesUtil.getBooleanData(this,"Login",false);//後面的false可有可無，不影響判斷