xcode 文本字段中的标签

Tags in TextField

提问by mukeshpawar

I have three cells, within that I have each textfields. Now I want the user is clicking in which textbox. This method textFieldDidEndEditing gives me the value which user is inputting but I don't get any tag of the textfield.

我有三个单元格，其中我有每个文本字段。现在我希望用户点击哪个文本框。这个方法 textFieldDidEndEditing 给了我用户输入的值，但我没有得到文本字段的任何标签。

Here is my code:

这是我的代码：

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{   switch (section) 
    {   case 0: return @"";
        case 1: return @"";
        default:return @"";
    }
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
        if(optconscodecount != 0 && gotOK == 2)
        return 2;
    else
        return 1;
}
// Customize the number of rows in the table view.
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    switch(section) 
    { case 0: try=1;    return conscodecount;
      case 1: try=2;  return optconscodecount;
      default:return 0;}
}
// Heights per row
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{  int section = [indexPath section];
    //int row = [indexPath row];
    switch (section) 
    {case 0:return 80.0f;
    case 1:return 80.0f;
    default:return 80.0f;}
}
// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    NSLog(@"\n%@", appDelegate.conscodeNameArray);
    static NSString *CellIdentifier = @"Cell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease];
    }
       // Set up the cell...
    row = [indexPath row];
    section = [indexPath section];
    switch (section) 
    {case 0:try=1;cell = [tableView dequeueReusableCellWithIdentifier:@"textCell"];
            if (!cell) 
            {cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:@"textCell"] autorelease];
            UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(20.0f, 10.0f, 280.0f, 20.0f)];
                [label setText:[appDelegate.conscodeNameArray objectAtIndex:row]];[cell addSubview:label]; [label release];
                [cell addSubview:[[UITextField alloc] initWithFrame:CGRectMake(20.0f, 40.0f, 280.0f, 30.0f)]];
            }
            UITextField *tf = [[cell subviews] lastObject];
            tf.placeholder = [appDelegate.conscodeNameArray objectAtIndex:row];
            tf.tag =tagcount;
            tagcount=tagcount+1;
            tf.delegate = self;
            tf.borderStyle = UITextBorderStyleRoundedRect;
            return cell;
            break;

        case 1:
            try=2;
            cell = [tableView dequeueReusableCellWithIdentifier:@"textCell"];
            if (!cell) 
            {
                cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:@"textCell"] autorelease];

                UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(20.0f, 10.0f, 280.0f, 20.0f)];
                [label setText:[appDelegate.optconscodeNameArray objectAtIndex:row]];
                [cell addSubview:label];
                [label release];
                [cell addSubview:[[UITextField alloc] initWithFrame:CGRectMake(20.0f, 40.0f, 280.0f, 30.0f)]];
            }
            UITextField *my = [[cell subviews] lastObject];
            my.tag = 0;
            my.tag = my.tag+1;
            my.placeholder = [appDelegate.optconscodeNameArray objectAtIndex:row];
            my.delegate = self;
            my.borderStyle = UITextBorderStyleRoundedRect;
            return cell;
            break;
            return cell;    
            break;
        default:
            break;
    }
return cell;
}

回答by SST

nameField.tag = 1;

nameField.tag = 1;

agefield.tag = 2;

// in the delegate method just check

// 在委托方法中只需检查

if (textField.tag == 1) {
NSLog(@" clicked in Name field"); 

} else if (textField.tag ==2) {
 NSLog(@" clicked in Age field");
}

回答by warrenm

If you were to retain each text field in an instance variable, you could do a simple comparison in your delegate method to see which field had finished editing. You can do this even if you create them completely dynamically by using an associative array to map from the instance to the field name, or vice-versa.

如果要将每个文本字段保留在实例变量中，则可以在委托方法中进行简单的比较，以查看哪个字段已完成编辑。即使您通过使用关联数组从实例映射到字段名称来完全动态地创建它们，您也可以这样做，反之亦然。