前言、芝麻認證需要后臺傳給你一個 url，后臺去螞蟻金服上看的文檔寫的有iOS和安卓要實現的代碼！

一、請求接口，返回url

       [self doVerify:jsonDict[@"data"][@"biz_no"]];

二、相關代碼

    #pragma mark - 芝麻認證
    - (void)doVerify:(NSString *)url {
        NSString *alipayUrl = [NSString stringWithFormat:@"alipays://platformapi/startapp?appId=20000067&url=%@", [self URLEncodedStringWithUrl:url]];
        if ([self canOpenAlipay]) {
            [[UIApplication sharedApplication] openURL:[NSURL URLWithString:alipayUrl] options:@{} completionHandler:nil];
        } else {
            UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"" message:@"是否下載并安裝支付寶完成認證?" delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"好的", nil];
            [alertView show];
        }
    }
    
    -(NSString *)URLEncodedStringWithUrl:(NSString *)url {
        NSString *encodedString = (NSString *)CFBridgingRelease(CFURLCreateStringByAddingPercentEscapes(NULL,(CFStringRef)url,NULL,(CFStringRef) @"!*'();:@&=+$,%#[]|",kCFStringEncodingUTF8));
        return encodedString;
    }
    
    - (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
        if (buttonIndex == 1) {
            NSString *appstoreUrl = @"itms-apps://itunes.apple.com/app/id333206289";
            [[UIApplication sharedApplication] openURL:[NSURL URLWithString:appstoreUrl] options:@{} completionHandler:nil];
        }
    }
    
    - (BOOL)canOpenAlipay {
        return [[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:@"alipays://"]];
    }

三、認證成功或者失敗，返回自己app回調 需要對接支付寶相關流程