更改我的tableview的自定义单元格内的按钮的标题

Question

I have a table view, inside which there is a cell. This cell has a button which is declared like this in the customTableVIewCell class.

@property (weak, nonatomic) IBOutlet UIButton *myButton;

inside the table view controller, i am setting method for this button.

[cell.myButton setTitle:@"Show cell number!" forState:UIControlStateNormal];
[cell.myButton addTarget:self action:@selector(myButtonClicked:) forControlEvents:UIControlEventTouchUpInside];

i want to change the title of the button whenever it is selected.

Now consider this: I have three cells in my table view, that is my table has three rows. In each row, there is a button called myButton.

Whenever it is clicked, i want to change the title of the button to 1 or 2 or 3 depending on the cell number in which the button exists.

i tried this:

- (IBAction)myButtonClicked:(id)sender{
    NSIndexPath *indexPath =[self.tableVIew indexPathForCell:(UITableViewCell *)[[sender superview] superview]];
    NSUInteger row = indexPath.row;
    NSLog(@"button was clicked for the following row %i", row);
}

But this is printing "button was clicked for the following row 0" to the console, no matter the button on cell #1 or cell #2 or cell #3 were clicked. (cell is nothing but the table row)

Please help me.

Answer 1

Try setting button tag as-

cell.myButton.tag = indexPath.row;

in your cellForRowAtIndexPath method..

And in your myButtonClicked method get the tag of sender button.. and then do whatever you want to do further.

- (IBAction)myButtonClicked:(id)sender{

    NSLog(@"button was clicked for the following row %i", sender.tag);
}

Answer 2

you can just use the sender in the IBAction :)

- (IBAction)myButtonClicked:(UIButton*)sender
{
    [sender setTitle:@"show new title" forState:UIControlStateNormal];
}

Answer 3

In the method cellForRowAtIndexPath where you initialise the cell,add this

cell.myButton.tag=indexPath.row;
[cell.myButton addTarget:self action:@selector(myButtonClicked:) forControlEvents:UIControlEventTouchUpInside];

And update your myButtonClicked method.

- (IBAction)myButtonClicked:(id)sender{
 UIButton *btn=sender;
NSLog(@"button was clicked for the following row %i", btn.tag);
}