退出急救人员状态时，UKeyboard“闪烁”

Question

This may be an ios7 issue as I have not noticed it before. I have a UITextField, and its appearance is set like so:

namingTextField.keyboardAppearance = UIKeyboardAppearanceDark;

When the user is done editing, I do this:

//Animate inputView out of the way
    [UIView animateWithDuration:kAnimationTime delay:0.0f options:UIViewAnimationOptionCurveEaseIn animations:^{


        //Resign first responder
        [namingTextField resignFirstResponder];

        //Animate GUI out
        inputBckGrnd.frame = CGRectMake(-self.view.frame.size.width, inputBckGrnd.frame.origin.y, inputBckGrnd.frame.size.width, inputBckGrnd.frame.size.height);
        inputLbl.frame = CGRectMake(-self.view.frame.size.width, inputLbl.frame.origin.y, inputLbl.frame.size.width, inputLbl.frame.size.height);

    }completion:^(BOOL finished){
        if(finished){
            [UIView animateWithDuration:kAnimationTime delay:0.0f options:UIViewAnimationOptionCurveEaseOut animations:^{
                self.inputViewDimmer.alpha = 0.0f;
                self.inputBlur.alpha = 0.0f;
            }completion:^(BOOL finished){
                if(finished){
                    //Input UI knocked out
                    didLoadInputUI = NO;

                    //Kill GUI
                    [inputBckGrnd removeFromSuperview];
                    [inputLbl removeFromSuperview];

                    inputBckGrnd = nil;
                    inputLbl = nil;        
                }
            }];
        }
    }];

When the UIKeyboard resigns, it flickers to the light appearance. I tried it with using UIKeyboardAppearanceLight and it doesn't flicker at all. I also tried moving it out of the animation block but it made no difference.

Any ideas?

Answer 1

Sometimes resigning the keyboard when other things are going on can cause lots of UI glitches, one way around this is to perform a @selector with a delay of 0 instead of just outright calling resignFirstResponder . It's strange that this works but I've had it solve many strange keyboard animation issues for me before. Example:

[self performSelector:@selector(hideKeyboard) withObject:nil afterDelay:0];

Of course, in hideKeyboard you would just call:

[namingTextField resignFirstResponder];

Let me know if this helps.