ios-APP后台切前台token处理

/*
 APP从后台转前台调用的方法

 */
- (void)applicationDidBecomeActive:(UIApplication *)application {

    //获取本地保存的token
    NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];
    NSString *string = [userDefaults objectForKey:@"login_token"];

    if (string != nil) {
        [self checkUserToken];
    }

}

-(void)checkUserToken
{

    //请求服务器，判断token是否过期
    [Common requestWithUrlString:upToken_url contentType:application_json errorShow:YES finished:^(id responseObj) {

        NSLog(@"%@",responseObj);

    } failed:^(NSString *errorMsg) {

    }];

}

原文地址：https://www.cnblogs.com/sayimba/p/8328846.html