objective c - UIKeyboardWillShowNotification calling twice ios 9 -


i using uikeyboardwillshownotificationto detect when textfield selecting user , keyboard opening. in ios 8 , older versions of ios working fine today upgrade ios 9 , xcode 7. problem in ios notification called after selecting each textfields (while in ios 8 called after selecting first textfield).

i searched , find post why uikeyboardwillshownotification called every time textfield selected?

but not ios 9 (actually every thing right in ios8 , upgrading see problem) , not using inputaccessoryviews too.

same problem here. have uitexfield in view controller , when leave textfield 1 programmatically using becomefirstresponder method, uikeyboardwillshownotification called once again. if keyboard not hide-and-show again. however, uikeyboardwillhidenotification not called.

i don't know why problem appeared in ios9 can give workaround. did : created bool property in view controller:

@property (assign, nonatomic) bool keyboardisshown;

and in keyboard observers methods :

- (void)keyboardwillhidenotification:(nsnotification *)notification {      self.keyboardisshown = no;        //rest of code }   - (void)keyboardwillshownotification:(nsnotification *)notification {      if(self.keyboardisshown) {         return;     }      self.keyboardisshown = yes;        //some code }

if has cleaner solution avoid uikeyboardwillshownotification called multiple times in ios9 when calling becomefirstresponder on uitextfield, take it!


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