ios - 在 TableView 中单击按钮获取文本字段值

Question

我正在开发 IOS 应用程序。在 TableViewCell 中单击按钮时获取文本字段值。我可以获取按钮的索引并传递给 TableViewCell，然后将单元格传递给文本字段。并从文本字段获取文本以获取(空)文本。但是是问题。请提前致谢。

//Tableviewcell create textfield

_quantity = [[UITextField alloc]initWithFrame:CGRectMake(770.0f, 10.0f,80.0f, 30.0f)];
[_quantity setFont:[UIFont systemFontOfSize:15.0f]];
_quantity.delegate =self;
[_quantity.layer setBorderColor: [[UIColor blackColor] CGColor]];
[_quantity.layer setBorderWidth: 1.0];
_quantity.textAlignment =  NSTextAlignmentCenter;
_quantity.tag = indexPath.row;
_quantity.text = obj.productQuantity;
_quantity.leftViewMode = UITextFieldViewModeAlways;
[_quantity setAdjustsFontSizeToFitWidth:YES];
[cell addSubview:_quantity];

_quantitySave = [[UIButton alloc]initWithFrame:CGRectMake(770.0f, 45.0f,80.0f, 20.0f)];
_quantitySave.tag = indexPath.row;
[_quantitySave.layer setCornerRadius:4.0f];
[_quantitySave.layer setBorderColor: [[UIColor blackColor] CGColor]];
[_quantitySave.layer setBorderWidth: 1.0];
_quantitySave.tintColor = [UIColor blackColor];
[_quantitySave setTitle:@"Delete" forState:UIControlStateNormal];
[_quantitySave addTarget:self action:@selector(saveQuantity:) forControlEvents:UIControlEventTouchDown];
[cell addSubview:_quantitySave];

-(IBAction)saveQuantity:(id)sender{
    UIButton *button = (UIButton*)sender;
    NSInteger index = button.tag;

    UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0]];
    UITextField *textField = (UITextField *)[cell viewWithTag:index];
    NSLog(@"%@",textField.text);
}

Answer 1

您在 UITextField 中添加标签作为 _quantity.tag = indexPath.row; 并从 button.tag 获取索引还没定。您应该在按钮中添加 标签。

_quantity = [[UITextField alloc]initWithFrame:CGRectMake(770.0f, 10.0f,80.0f, 30.0f)];
    [_quantity setFont:[UIFont systemFontOfSize:15.0f]];
    _quantity.delegate =self;
    [_quantity.layer setBorderColor: [[UIColor blackColor] CGColor]];
    [_quantity.layer setBorderWidth: 1.0];
    _quantity.textAlignment =  NSTextAlignmentCenter;
    //_quantity.tag = indexPath.row;
    yourButtonObject.tag = indexPath.row
    _quantity.text = obj.productQuantity;
    _quantity.leftViewMode = UITextFieldViewModeAlways;
    [_quantity setAdjustsFontSizeToFitWidth:YES];
    [cell addSubview:_quantity];


-(IBAction)saveQuantity:(id)sender{
 UIButton *button = (UIButton*)sender;
 NSInteger index = button.tag;

UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:[NSIndexPath indexPathForRow:index inSection:0]];
UITextField *textField = (UITextField *)[cell viewWithTag:index];
 NSLog(@"%@",textField.text);