PopViewControllerAnimated:YES when tap on UIAlertView make Keyboard appear in parentVC - ios

Question

I tried to programmatically popViewcontroller
By doing this
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
[[self navigationController] popViewControllerAnimated:YES];
}
The problem is I have textFields in this VC.If the textField is active and keyboard is displaying, and if I display the AlertView with use to command to resign keyboard ( [[self view] endEditing:YES] or [textField resignFirstResponder] ). And then call the command popViewControllerAnimated:YES . The current VC is dismissed but briefly after the parent VC is appear. There will be a keyboard shown for like 1 second and then disappear.
This behaviour is very annoying. Are there anyway to solve this ? I noticed that by using [[self navigationController] popViewControllerAnimated:NO] The keyboard won't appear . But I prefer to have animation in my app.
Please help.
Thanks in advance

Answer 1

I solved this problem my making the [[self navigationController] popViewControllerAnimated:YES]; delayed when called.
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 100 * NSEC_PER_MSEC), dispatch_get_main_queue(), ^{
[[self navigationController] popViewControllerAnimated:YES];
});

Answer 2

#KongHantrakool 's answer works but also has a shortage, you can add [[self view] endEditing:YES] or [textField resignFirstResponder] in - (void)willPresentAlertView:(UIAlertView *)alertView ,it will be better.

Answer 3

You can also try this code:
#pragma mark - UIAlertView Delegate
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
[self performSelector:#selector(popViewController) withObject:nil afterDelay:0.1];
}
- (void)popViewController {
[self.navigationController popViewControllerAnimated:YES];
}

Answer 4

Try this i think its may help you
- (void)viewWillAppear:(BOOL)animated
{
[textField resignFirstResponder];
}

Answer 5

I encountered this problem too, and I found out that the delay solution does not work at all. alertView will remember the status of the keyboard, so when the alertView is dismissed, it will restore the keyboard. So the issue comes out: the keyboard appears about 1 second after we pop the viewController.
Here is my solution:
We just need to ensure the keyboard's status is hidden, before we pop the viewcontroller.
First we add a property and register the keyboard notifications to monitor the keyboard's status:
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(keyboardDidHide:) name:UIKeyboardDidHideNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(keyboardDidShow:) name:UIKeyboardDidShowNotification object:nil];
#property (nonatomic) BOOL keyboardDidShow;
Implement the funs:keyboardDidHide: and keyboardDidShow:
- (void)keyboardDidHide:(NSNotification *)notification {
self.keyboardDidShow = NO;
if (self.needDoBack) {
self.needDoBack = NO;
[self showBackAlertView];
}
}
- (void)keyboardDidShow:(NSNotification *)notification {
self.keyboardDidShow = YES;
}
Do your pop:
- (void)back {
if (self.keyboardDidShow) {
self.needDoBack = YES;
[self.view endEditing:YES];
} else {
[self showBackAlertView];
}
}