iOS开发支付宝集成没有安装支付宝的情况下不跳网页

集成支付宝之后 如果没有安装支付宝，按道理应该是会直接跳支付宝网页支付。

不知道从第几版开始，最近用了最新得SDK。是11月18号的，跳转了不了，找了很多方法，最后用以下这个方法可行： NSArray *array = [[UIApplication sharedApplication] windows];

            UIWindow* win=[array objectAtIndex:0];

            [win setHidden:NO];

            [[AlipaySDK defaultService] payOrder:orderString fromScheme:appScheme callback:^(NSDictionary *resultDic) {

                NSLog(@"reslut = %@",resultDic);

                if ([resultDic[@"resultStatus"] isEqualToString:@"9000"]) {

                    ShowWebVC *gotoVC = [[ShowWebVC alloc] init] ;

                    gotoVC.isShow = @"YES";

                    gotoVC.urlStr = [NSString stringWithFormat:@"%@emallcardorder/completion.do?payType=2&orderCode=%@",service_IP,bus.rspInfo[@"orderCode"]];

                    [self.navigationController pushViewController:gotoVC animated:YES];

                }else{

                    [SVProgressHUD showErrorWithStatus:@"支付失败"];

                }

            }];

应该是页面的显示重叠的问题导致没有出现