becomefirstresponder

I have a UITextField with custom keyboard, basically like a calculator. I would like my keyboard show up by default, so i used [self.topInputTextField becomeFirstResponder]; in viewDidLoad , I think that's very common usage. However, it causes some very weird actions on my textfield. When i set my textfield as the first responder in viewDidLoad, and every time after i done editing, the text will jump, and when i click another text field and and click the first text field again, the texts in the first text field sometimes shift down and disappear, but sometimes not. I feel it's very hard to

Im working on a tiny app just to learn cocoa, and Im having a hard time with setting FirstResponder to some NSTextFields. When the view opens, I want the first NSTextField, clientNumber, to be selected, so I trigger [clientNumber becomeFirstResponder] at the end of my loadView method, but it does not select the text field. But when I click the button that fires the (IBAction)addToArray method, it selects the right text field. Further do I have another text field, it should contain integers only, so I have a crude verification for it. When the content is not a int, I get a beep, just like it

I've read so many solution on how can i focus a searchbar to make keyboard appear when i open my search view, and all of that are like this [searchBar becomeFirstResponder]; mine is [self.searchDisplayController.searchBar becomeFirstResponder]; but I tried both. Now, I tried this, and I also added a [self.searchDisplayController setActive:YES]; because I'm using a SearchDisplayController, but so far the best result i can have is to have the cursor on the searchbar, the uitableview with an overlay on it, but still no keyboard. If I run the simulator I can type on the searchbar with my computer

I've recently discovered a problem in my app that only seems to occur in iOS 10 where the system keyboard does not display when programmatically triggering a text field to become first responder inside of a completion handler -- specifically the completion handler I get back from a Touch ID attempt. The crazy part of this issue is, even though the keyboard is not shown, the area on the iPhone where the keyboard normally would be is still responding to touch inputs as if the user is typing on the keyboard! After doing a lot of investigation and debugging into the issue, I stumbled across the

This is my code: while (true) { if ([identificationField becomeFirstResponder]) { NSLog(@"finally!"); break; } else{ if ([identificationField canBecomeFirstResponder]) { NSLog(@"can"); } else{ NSLog(@"cannot"); } NSLog(@"%@", identificationField); NSLog(@"dadgum!!"); } } This is what it logs: 2014-02-05 11:33:54.253 Store Test[22488:70b] can 2014-02-05 11:33:54.254 Store Test[22488:70b] <UITextField: 0xb5c89a0; frame = (10 1; 300 43); text = ''; clipsToBounds = YES; opaque = NO; autoresize = TM+BM; gestureRecognizers = <NSArray: 0xb5cc7b0>; layer = <CALayer: 0xb5c8b40>> 2014-02-05 11:33:54.254