Question

I keep seeing examples that manually iterate through all of the subviews of a certain type in a UIView. For example, if you want a click outside of a keyboard to dismiss the keyboard regardless of which field is active, you might:

-(IBAction)backgroundClick:(id)sender
{
    [myTextField resignFirstResponder];
    [myOtherTextField resignFirstResponder];
    // ... repeat for each of my zillion text fields.
}

Instead of something like:

for(UIView *v in self.view.subviews)
    if(v.hasKeyboard) // or something like java's instanceof
        [v resignFirstResponder];

Although improvements to the specific case of the keyboard (such as discovering which one is first responder now) are appreciated, I’m more interested in the general case.

Answer 1

Couldn’t you do something like


if([v isMemberOfClass:[UITextField class]]){
[v resignFirstResponder];
}


?