Question

我试图在我的桌面视图中的自定义UITableCell中的UITextField上调用textFieldShouldReturn。我使用这段代码来获取单元格的索引路径，我在另一篇文章的stackoverflow上找到了这个方法：

NSIndexPath *indexPath = [self.tableView indexPathForCell:(friendTableCell*)[[textField superview] superview]];

当我编译并运行时，我没有任何错误，但是当我选择一个单元格，输入文本，并尝试按键盘返回时，没有任何反应。我已经排除了应该调用的其余代码，因为它相当冗长，并且我在didSelectRowAtIndexPath中进行了测试并且它可以工作。如果有人真的很想看，我可以加入它。我想也许我的代表没有为键盘设置正确，但我在我的标题中包含了UITextFieldDelegate，而且我不确定如何设置键盘的代表，因为我＆＃39; m访问tableview中的自定义单元格。如果有人知道该做什么，或者另一种方法，我会非常感激。谢谢！

更新 - 完成textFieldShouldReturn方法

- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
    NSIndexPath *indexPath = [self.tableView indexPathForCell:(friendTableCell*)[[[textField superview] superview] superview]];

    NSString *sectionTitle = [self.usernameSectionTitles objectAtIndex:indexPath.section];
    NSArray *sectionUser = [self.sortedUsernames objectForKey:sectionTitle];
    self.recipient = [sectionUser objectAtIndex:indexPath.row];
    friendTableCell *cell = (friendTableCell *)[self.tableView cellForRowAtIndexPath:indexPath];

    NSString *sendingUser = self.currentUser.username;
    NSString *message = [NSString stringWithFormat:@"from %@", [sendingUser uppercaseString]];

    if ([self.locationSwitch isOn])
    {
        if ([cell.message.text length] > 0)
        {
            message = [NSString stringWithFormat:@"from %@ %@", [sendingUser uppercaseString],cell.message.text];
        }

    CLLocation *location = locationManager.location;
    if(!location)
    {
        [cell closeMessage:self];
    }

    dispatch_queue_t queue = dispatch_queue_create("myQueue", DISPATCH_QUEUE_SERIAL);
    dispatch_sync(queue, ^{
        CLLocationCoordinate2D coordinate = [location coordinate];
        PFGeoPoint *geoPoint = [PFGeoPoint geoPointWithLatitude:coordinate.latitude longitude:coordinate.longitude];
        PFObject *object = [PFObject objectWithClassName:@"Location"];
        [object setObject:geoPoint forKey:@"location"];
        [object setObject:self.recipient.objectId forKey:@"recipient"];

        [object saveEventually:^(BOOL succeeded, NSError *error) {
            if(succeeded){
                UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Your Location was sent!"message:[error.userInfo objectForKey:@"error"] delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
                [alertView show];

                dispatch_sync(queue, ^{
                    PFQuery *locationQuery = [PFQuery queryWithClassName:@"Location"];
                    [locationQuery whereKey:@"recipient" equalTo:self.recipient.objectId];

                    /****** CHANGE THE getFirstObjectInBackground method so it doesn't take the first each time
                     or DELETE THE LOCATION after it has been viewed **************/

                    [locationQuery getFirstObjectInBackgroundWithBlock:^(PFObject *object, NSError *error) {
                        if (error) {
                            NSLog(@"Error: %@ %@", error, [error userInfo]);
                        }
                        else {
                            self.locationId = object.objectId;
                            NSLog(@"Here is you location ID: %@", self.locationId);

                            dispatch_sync(queue, ^{
                                self.data = @{
                                              @"alert":message,
                                              @"locationId":self.locationId
                                              };

                                PFQuery *userQuery = [PFUser query];
                                [userQuery whereKey:@"objectId" equalTo:self.recipient.objectId];
                                PFQuery *query = [PFInstallation query];
                                [query whereKey:@"currentUser" matchesQuery:userQuery];

                                PFPush *push= [[PFPush alloc]init];
                                [push setQuery:query];
                                [push setData:self.data];
                                [push sendPushInBackground];
                            });
                        }
                    }];
                });
            }
        }];
    });
}



else if ([cell.message.text length] > 0)
{
    message = [NSString stringWithFormat:@"from %@ %@", [sendingUser uppercaseString],cell.message.text];

    PFQuery *userQuery = [PFUser query];
    [userQuery whereKey:@"objectId" equalTo:self.recipient.objectId];
    PFQuery *query = [PFInstallation query];
    [query whereKey:@"currentUser" matchesQuery:userQuery];

    PFPush *push= [[PFPush alloc]init];
    [push setQuery:query];
    [push setMessage:message];
    [push sendPushInBackground];
}

else
{
    PFQuery *userQuery = [PFUser query];
    [userQuery whereKey:@"objectId" equalTo:self.recipient.objectId];
    PFQuery *query = [PFInstallation query];
    [query whereKey:@"currentUser" matchesQuery:userQuery];

    PFPush *push= [[PFPush alloc]init];
    [push setQuery:query];
    [push setMessage:message];
    [push sendPushInBackground];
}

NSLog(@"Message sent!");
[cell closeMessage:self];
[cell resignFirstResponder];
return YES;

}

Answer 1

尝试此NSIndexPath *indexPath = [self.tableView indexPathForCell:(friendTableCell*)[[[textField superview] superview] superview]];，因为容器视图和单元格之间还有另一个滚动视图层。

我也可以看到你写了[cell resignFirstResponder];而你应该使用[textField resignResponder] 希望这会有效..

无法从自定义UITableCell中的UITextField调用textFieldShouldReturn

1 个答案: