1、 一般方式

- (void)buttonAction:(UIButton *)sender

{

UITableViewCell *cell = (UITableViewCell *)[[sender superview] superview];

NSIndexPath *indexPath = [_tableView indexPathForCell:cell];

NSLog(@"indexPath is = %i",indexPath.row);

}

 

2、runtime添加属性方式，即关联对象的方式

//runtime 关联对象

这种方式首先引入#import <objc/runtime.h>

- (UITableViewCell *)tableView:(UITableView *)tableVie cellForRowAtIndexPath:(NSIndexPath *)indexPath

{

static NSString *identiStr = @"cellID";

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:identiStr];

if (cell == nil)

{

cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identiStr];

UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];

button.frame = CGRectMake(0, 0, 100, 33);

[button addTarget:self action:@selector(buttonAction:) forControlEvents:UIControlEventTouchUpInside];

[button setTitleColor:[UIColor redColor] forState:UIControlStateNormal];

button.tag = 110 + indexPath.row;

[cell.contentView addSubview:button];

}

UIButton *button = (UIButton *)[cell.contentView viewWithTag:110];

//runtime 关联对象

objc_setAssociatedObject(button, @"button", indexPath, OBJC_ASSOCIATION_ASSIGN);

[button setTitle:dataSource[indexPath.row] forState:UIControlStateNormal];

return cell;

}

//事件触发 runtime 获取关联的对象

- (void)buttonAction:(UIButton *)sender

{

//runtime 获取关联的对象

UITableViewCell *cell = objc_getAssociatedObject(sender, @"button");

NSIndexPath *indexPath = [_tableView indexPathForCell:cell];

NSLog(@"indexPath is = %ld",indexPath.row);

}

二、已知具体row，获取indexPath

- (void) refreshLessTime

{

for (int row = 0; row < leftTimeArr.count; row ++)

{

NSIndexPath *indexPath = [NSIndexPath indexPathForItem: row inSection:0];

UITableViewCell *cell = (UITableViewCell *)[_tableView cellForRowAtIndexPath:indexPath];

UILabel *remainingTimeLabel = (UILabel *)[[cell.contentView viewWithTag:500] viewWithTag:501];

remainingTimeLabel.text = [leftTimeArr objectAtIndex:indexPath.row];

}

}