When the button in TableView cell pressed, how do I know the button of which row of cell pressed?

Question

I have a custom TableView cell, and in that there's a button. The table view have many rows used the same custom cell. Now if the button of one of the cells pressed. I want to know which row of cell the button is in?

http://stackoverflow.com/questions/11936126/how-to-pass-uitableview-indexpath-to-uibutton-selector-by-parameters-in-ios/11936294#11936294 — TheTiger, Dec 17 '14 at 11:43

score 3 · Accepted Answer · edited Oct 11 '14 at 08:52

3

(1). In this method cellForRowAtIndexPath: , assign button with a tag. For example:

cell.yourbutton.tag = indexPath.row;

(2). Add action for you button with same selector

[cell.yourbutton addTarget:self action:@selector(cellButtonClicked:) forControlEvents:UIControlEventTouchUpInside];

(3). Then

-(void)cellButtonClicked:(UIButton*)sender
{
    NSIndexPath *path = [NSIndexPath indexPathForRow:sender.tag inSection:0];
}

edited Oct 11 '14 at 08:52

Anbu.Karthik

82,064
23
174
143

answered Oct 11 '14 at 07:46

Leo

24,596
11
71
92

the questioner need the row number not the button index , just modify your answer – Anbu.Karthik Oct 11 '14 at 07:47
if i make a custome cell and in code i set the button tag, are the button tag in different rows of cell have the same button tag or different? – leizh007 Oct 11 '14 at 08:28
Should be different.You use it to decide which button is clicked. – Leo Oct 11 '14 at 08:43

score -2 · Answer 2 · answered Oct 11 '14 at 08:45

You can define your custom property and you can use it like below:-

#define kCustomProperty @"CustomProperty"

Associate your object with that custom property like below

objc_setAssociatedObject(yourButton,kCustomProperty , yourCellIndexPath, OBJC_ASSOCIATION_RETAIN_NONATOMIC);

Get your data using the same property and object like below

NSIndexPath *yourCellIndexPath = (NSIndexPath *)objc_getAssociatedObject(yourButton, kCustomProperty);

Its a kind of custom property you can create by coding if you don't want to use tag.

When the button in TableView cell pressed, how do I know the button of which row of cell pressed?

2 Answers2