从connectionDidFinishLoading推送到新的ViewController

Question

是否可以从ConnectionDidFinishLoading推送到新的视图控制器？

我有以下内容，它会执行ConnectionDidFinishLoading，但不会推送到新的视图控制器。

-(void)connectionWithURLString:(NSMutableArray *)urlString
{
    NSDate *now =  [NSDate date];
    int userID = [[clientDataStruct.clientData objectForKey:@"number"] intValue];
    NSDate *date = self.datePicker.date;
  // NSLog(@"obj: %@", urlString);

    NSString *extrString = [NSString stringWithFormat:@", customerdetails:{customer_id = %d, job_date = %@, date_created = %@}",userID,date, now];

    NSString *post = [NSString stringWithFormat:@"json=quote:{%@%@}", urlString, extrString ];

     NSLog(@"post: %@", post);
    NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:NO];
    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];

    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
    NSString *value = [defaults objectForKey:@"value"];

    NSString *jsonUrl = [NSString stringWithFormat:@"xxx?task=add_quote&user_id=%@&customer_id=%@",value, [clientDataStruct.clientData valueForKey:@"number"]];

    [request setURL:[NSURL URLWithString:jsonUrl]];
    [request setHTTPMethod:@"POST"];
    [request setHTTPBody:postData];

    NSURLConnection *connection = [NSURLConnection connectionWithRequest:request delegate:self];



    if (!connection)
        NSLog(@"Connection failed!");
}

- (void)Success
{

        UIStoryboard *subVc = [UIStoryboard storyboardWithName:@"MainStoryboard_iPad" bundle:nil];
        UserTableView *userTable = [subVc instantiateViewControllerWithIdentifier:@"UserTableView"];

        userTable.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
        [self.navigationController pushViewController:userTable animated:YES];

}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{

}


- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
    NSLog(@"%@", error);
}

- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
    [self performSelectorOnMainThread:@selector(Success) withObject:Nil waitUntilDone:YES];
    NSLog(@"connectionDidFinishLoading%@", connection);
}

一切正常，并返回我的数据，数据会被添加到SQL。我的NSLog显示ConnectionDidFinishLoading。但它没有推向新的View Controller。

感谢您的帮助，请抓住这个。

感谢Fahim建议允许我进一步调试，导航视图打破了返回的模型控制器。将其更改为推送并且一切正常

Answer 1

第1点

由于您没有导航控制器，因此无法使用此功能。确保你有导航控制器。

第2点

- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
    [self performSelectorOnMainThread:@selector(LoginSuccess) withObject:Nil waitUntilDone:YES];
    NSLog(@"connectionDidFinishLoading%@", connection);
}

这是错误的。即使用户输入了错误的用户名或密码，您仍然允许用户登录。

检查您在connectionDidFinishLoading中获得的响应，然后根据此响应执行转换。

e.g。如果你在后端有PHP，你的代码将是

sql query here to add data

if (data added) {
    echo "valid";
} else {
    echo "invalid";
}

现在在connectionDidFinishLoading中检查此响应，并根据此进行转换

Answer 2

首先检查如果您的LoginSuccess被调用，如果是，则粘贴此

UserTableView * userTable =[self.storyboard instantiateViewControllerWithIdentifier:@"UserTableView"];
[self.navigationController pushViewController:userTable animated:YES]

喜欢这个但是用UserTableView替换ResultsTableView