ANDROID学習ノート(二)ユーザ登録問題TOKEN SESSIONキャッシュ

まずTOKENキャッシュの問題について紹介します
工具類を書いて入れる

/*
	 *      token
	 */
	public static String getCachedToken(Context context){
		return context.getSharedPreferences(APP_ID, context.MODE_PRIVATE).getString(KEY_TOKEN, null);
	}
	
	/*
	 *   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の説明:
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.
簡単な説明:データを修正し終わって、必ず提出して、データの多重保存方式があります

MODE_PRIVATE

MODE_WORLD_READABLE

MODE_WORLD_WRITEABLE

MODE_MULTI_PROCESS

詳細はAPIを参照