iOS-网页H5支付如何拿到支付状态的回调

女爷i 2023-10-18 21:14 55阅读 0赞

需求描述：

因本app是自己测试项目，没有接入支付宝和微信的SDK支付，点击支付按钮时就是传给后台一个订单ID，然后后台接入了支付流程，会直接返回一个URL链接，app调用链接进行网页支付，支付完成后想要拿到支付的状态，从而判断跳转的界面。

第一步：

我们需要传给后台一个订单ID，拿到调起支付宝或者微信支付的网页URL，拿到URL我们app调用

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:htmlStr]];

这个时候能够调起Safari浏览器，我们就可以进行支付了

第二步：

支付完成后，我们会从Safari中返回到app，这个时候需要知道支付是否成功或者失败，这个时候不像app接入支付宝，微信SDK那样，在- (BOOL)application:(UIApplication \*)application openURL:(NSURL \*)url sourceApplication:(NSString \*)sourceApplication annotation:(id)annotation能够直接拿到支付状态的回调，但我们这里使用的是调起网页支付呀，因此需要另寻途径，拿到回调

- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation
    {
        if ([url.host isEqualToString:@"safepay"]) {
            // 支付跳转支付宝钱包进行支付，处理支付结果
            [[AlipaySDK defaultService] processOrderWithPaymentResult:url standbyCallback:^(NSDictionary *resultDic) {
                NSLog(@"result = %@",resultDic);
            }];
            
            // 授权跳转支付宝钱包进行支付，处理支付结果
            [[AlipaySDK defaultService] processAuth_V2Result:url standbyCallback:^(NSDictionary *resultDic) {
                NSLog(@"result = %@",resultDic);
                // 解析 auth code
                NSString *result = resultDic[@"result"];
                NSString *authCode = nil;
                if (result.length>0) {
                    NSArray *resultArr = [result componentsSeparatedByString:@"&"];
                    for (NSString *subResult in resultArr) {
                        if (subResult.length > 10 && [subResult hasPrefix:@"auth_code="]) {
                            authCode = [subResult substringFromIndex:10];
                            break;
                        }
                    }
                }
                NSLog(@"授权结果 authCode = %@", authCode?:@"");
            }];
        }else {
            return [WXApi handleOpenURL:url delegate:[WXApiManager sharedManager]];
        }
        return YES;
    }

这个时候我们进去AppDelegate.m中会发现有如下两种方法

- (void)applicationWillEnterForeground:(UIApplication *)application {
         NSLog(@"applicationWillEnterForeground----url====%@",application);
        
        // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.
    }
    
    
    - (void)applicationDidBecomeActive:(UIApplication *)application {
         NSLog(@"applicationDidBecomeActive----url====%@",application);
    
        // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
    }

这个时候我们可以在调起网页支付的界面加入通知，然后调用一下查询订单状态的接口即可，这样就能知道是否支付成功！

- (void)viewWillAppear:(BOOL)animated{
        [super viewWillAppear:animated];
        
        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(becomeActive) name:UIApplicationWillEnterForegroundNotification object:nil];
    
        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(becomeActive) name:UIApplicationDidBecomeActiveNotification object:nil];
    }
    
    - (void)becomeActive{
        if (!self.isDefault) {
            [self orderDetailRequest];//查询订单支付状态
        }
    }

这样也有可能其他非支付的地方调用，因此可以加一个isPayJump的BOOL值进行标记。

可参考 [https://segmentfault.com/q/1010000005725677][https_segmentfault.com_q_1010000005725677]

[https_segmentfault.com_q_1010000005725677]: https://segmentfault.com/q/1010000005725677