iOS-UITableViewCell是否从superView中删除？

Question

I have a UITableViewCell with textfileds, as soon as the cell is no longer visible on the screen I need to dismiss the keyboard. Is there a simple way to be notified when a cell is being removed from the tableView (is no longer visible)?

I tried the following in my Cell Class, and it did not get called.

- (void)removedFromSuperView
{

}

Answer 1

Cells get reused. As a cell scrolls off one end of the screen it gets reused at the other end.

Why do you need to dismiss a keyboard when the row goes off the screen? What if the user quickly scrolls the row back onto the screen? If you provide more details about what you are doing, someone can offer a more specific solution.

Answer 2

Maddy is right. You need to reuse your cells, and i think it's the solution to solve your problem :

1. in your TableViewDelegate, call a method to update your cell content
2. in this method, check if the texfield "isFirstResponder"
3. if it's true, call "resignFirstResponder" in your textfield