ANDROID 学习笔记（二） 用户登陆问题 TOKEN SESSION 缓存

摘要: android token 缓存

首先介绍TOKEN 缓存问题

写个工具类 里面放入

/*
* 获取缓存的token
*/
public static String getCachedToken(Context context){
return context.getSharedPreferences(APP_ID, context.MODE_PRIVATE).getString(KEY_TOKEN, null);
}

/*
* 缓存token
*/
public static void cacheToken(Context context, String token){

Editor e = context.getSharedPreferences(APP_ID, context.MODE_PRIVATE).edit();
e.putString(KEY_TOKEN, token);
e.commit();
}

ANDROID API 说明：

Interface for accessing and modifying preference data returned by

getSharedPreferences(String, int)

. For any particular set of preferences, there is a single instance of this class that all clients share. Modifications to the preferences must go through an

SharedPreferences.Editor

object to ensure the preference values remain in a consistent state and control when they are committed to storage. Objects that are returned from the various

get

methods must be treated as immutable by the application.

简要说明： 修改完数据，一定要提交，数据的有多重保存方式

MODE_PRIVATE

MODE_WORLD_READABLE

MODE_WORLD_WRITEABLE

MODE_MULTI_PROCESS

详细解释见API