ios - UITextField becomeFirstResponder 不显示文本光标

Question

我在每个 UITableViewRow 上都有两个 UITextFields，由于某种原因，当我在 UIKeyboard 上按下回车键时，一个特定的行两个 UITextFields 都不会响应(光标不可见)。

我有一个正在使用的自定义 UITableViewCell，如果您愿意，我可以向您展示它的代码，但我认为这不是问题，因为返回键适用于 95% 的 UITableViewCell。所以我在想，也许这就是我处理 UITextFields 的委托(delegate)方法的方式？

这是我用于委托(delegate)方法的代码。

-(BOOL)textFieldShouldBeginEditing:(UITextField*)textfield {

        int height = self.finishingTableView.frame.size.height;
         self.finishingTableView.frame= CGRectMake(self.finishingTableView.frame.origin.x, self.finishingTableView.frame.origin.y, self.finishingTableView.frame.size.width, 307);

    // select correct row
    if (textfield.tag > 999999) {
        int adjustTag = textfield.tag-1000000; // remove a million so that you have the text fields correct position in the table. (this is only for height textfields)
        NSIndexPath *indexPath =[NSIndexPath indexPathForRow:adjustTag inSection:0];
        [finishingTableView selectRowAtIndexPath:indexPath animated:NO scrollPosition:UITableViewScrollPositionNone];
        [self tableView:finishingTableView didSelectRowAtIndexPath:indexPath];
        [self.finishingTableView scrollToRowAtIndexPath:indexPath atScrollPosition:UITableViewScrollPositionNone animated:YES];
        return YES;
    } else {
        NSIndexPath *indexPath =[NSIndexPath indexPathForRow:textfield.tag inSection:0];
        [finishingTableView selectRowAtIndexPath:indexPath animated:NO scrollPosition:UITableViewScrollPositionNone];
        [self tableView:finishingTableView didSelectRowAtIndexPath:indexPath];
        [self.finishingTableView scrollToRowAtIndexPath:indexPath atScrollPosition:UITableViewScrollPositionNone animated:YES];
        return YES;
    }
    return YES;
}

- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
    NSLog(@"%i", textField.tag+1);

    [[self.view viewWithTag:textField.tag+1] becomeFirstResponder];
    // this means there has been a change in the UItextfield


    NSLog(@"%@", selectedItemDictionary);
    if (textField.tag < 999999) {
        tempFinishingObjectDictionary = [selectedItemDictionary mutableCopy];
        if (![textField.text isEqualToString:[selectedItemDictionary objectForKey:@"mMM"]]) {
            tempUpdatedRow = @"T";
            // remove kevalues
            [tempFinishingObjectDictionary removeObjectForKey:@"updatedRow"];
            [tempFinishingObjectDictionary removeObjectForKey:@"new_mMM"];
            // update keyvalues
            [tempFinishingObjectDictionary setValue:tempUpdatedRow forKey:@"updatedRow"];
            [tempFinishingObjectDictionary setValue:textField.text forKey:@"new_mMM"];
        }
    } else {
        if (![textField.text isEqualToString:[selectedItemDictionary objectForKey:@"hMM"]]) {
            tempUpdatedRow = @"T";
            // remove kevalues
            [tempFinishingObjectDictionary removeObjectForKey:@"updatedRow"];
            [tempFinishingObjectDictionary removeObjectForKey:@"new_hMM"];
            // update keyvalues
            [tempFinishingObjectDictionary setValue:tempUpdatedRow forKey:@"updatedRow"];
            [tempFinishingObjectDictionary setValue:textField.text forKey:@"new_hMM"];
        }
    }
    NSLog(@"%@", tempFinishingObjectDictionary);
    [coreDataController editSelectedFinishing:htmlProjID UpdatedNSD:tempFinishingObjectDictionary SelectedRow:selectedItemIndexPathRow];
    [SVProgressHUD dismiss];


    NSLog(@"%@", selectedItemDictionary);

    return YES;
}

我不知道在哪里查看或如何找到这个错误，因为它看起来很随机，但每次都会在相同的 UITextFields 上发生。

上面的代码是我认为可能存在问题的地方；然而，在记录了所有内容并调试了几个小时后，我开始认为这是 UITableViewCells 中 UITextFields 的错误。

Answer 1

是 [[self.view viewWithTag:textField.tag+1] canBecomeFirstResponder] == YES?

在将下一个设置为第一响应者之前，您还需要退出当前的 UITextField

[textField resignFirstResponder];