ios登陆过期的判断

#pragma mask 更新过期状态

- (void)applicationDidBecomeActive:(UIApplication *)application

{

    NSLog(@"applicationDidBecomeActiveapplicationDidBecomeActiveapplicationDidBecomeActive");

    //运行时候监测两次的登陆时间差

    [self updateExpriedStatue];

}

- (void) updateExpriedStatue {

   //自定义的方法 

    Application *app=[Application theApp];

   //自定义的方法里面的归档方法 

    NSString *lastLoginTime = [[Application theApp] preferenceWithName:kLoginTimeKey];

    long long lastLoginSeconds1970 = [lastLoginTime longLongValue];

    long long nowSeconds1970 = [[NSDate date] timeIntervalSince1970];

    long long diffValue = (nowSeconds1970 - lastLoginSeconds1970);

    //判断是否已经超过了自己规定的时间

    BOOL expried = diffValue >=3600*72;

    if(expried)

    {

        //超过时间删除用户信息。

        [app.mUserDefaults removeObjectForKey:Kuserdata];

    }

}

//在用户登陆成功的时候纪录下用户的登陆时间 并归档

 long long seconds = [[NSDate date] timeIntervalSince1970];

  NSString *secondsFrom1970 = [NSString stringWithFormat:@"%lli", seconds];

  [app setPreference:secondsFrom1970 withName:kLoginTimeKey];