iOS indexPath 为零（自定义附件图像）
我使用了 Apple 的“配件”示例代码，在我的表格中添加了自定义配件图像。该表正确地渲染了图像和所有内容，但是当我单击应该带我进入 accessoryButtonTappedForRowWithIndexPath 方法的图像时，没有任何反应，因为由于某种原因 indexPath 为零。请参阅此方法来检查indexPath：
- (void)accessoryButtonTapped:(id)sender event:(id)event
{
NSSet *touches = [event allTouches];
UITouch *touch = [touches anyObject];
CGPoint currentTouchPosition = [touch locationInView:self.tableView];
NSIndexPath *indexPath = [self.tableView indexPathForRowAtPoint: currentTouchPosition];
if (indexPath != nil)
{
[self tableView: self.tableView accessoryButtonTappedForRowWithIndexPath: indexPath];
}
}
I've used the sample code from Apple for "Accessory" to have a custom accessory image in my table. The table renders the image properly and everything but when I click on the image that is supposed to take me to the accessoryButtonTappedForRowWithIndexPath method nothing happens because indexPath is nil for some reason. See this method which checks the indexPath:
- (void)accessoryButtonTapped:(id)sender event:(id)event
{
NSSet *touches = [event allTouches];
UITouch *touch = [touches anyObject];
CGPoint currentTouchPosition = [touch locationInView:self.tableView];
NSIndexPath *indexPath = [self.tableView indexPathForRowAtPoint: currentTouchPosition];
if (indexPath != nil)
{
[self tableView: self.tableView accessoryButtonTappedForRowWithIndexPath: indexPath];
}
}
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为什么不能在
UITableViewDelegate中使用tableView:accessoryButtonTappedForRowWithIndexPath:？Why can't you just use
tableView:accessoryButtonTappedForRowWithIndexPath:in yourUITableViewDelegate?