大佬教程收集整理的这篇文章主要介绍了ios – iPad上的UIModalPresentationFormSheet.键盘出现时如何调整UITextView高度，大佬教程大佬觉得挺不错的，现在分享给大家，也给大家做个参考。
CGRect frameBegin = [[notification.userInfo objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue] ; CGRect frameEnd = [[notification.userInfo objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue]; CGRect resultBegin = [self.view convertRect:frameBegin fromView:nil]; CGRect resultEnd = [self.view convertRect:frameEnd fromView:nil]; CGFloat kbdHeight = resultBegin.origin.y - resultEnd.origin.y;
1. Register for keyboard notifications: [[NsnotificationCenter defaultCenter] addObserver:self SELEctor:@SELEctor(myTextViewHeightAdjustMethod:) name:UIKeyboardWillShowNotification object:nil]; [[NsnotificationCenter defaultCenter] addObserver:self SELEctor:@SELEctor(myTextViewHeightAdjustMethod:) name:UIKeyboardDidShowNotification object:nil]; 2. CalculatE intersection and adjust textView height with the bottom consTraint - (void)myTextViewHeightAdjustMethod:(Nsnotification *)notification { NSDictionary *userInfo = [notification userInfo]; CGRect keyboardFinalFrame = [[userInfo emf_ObjectOrNilForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue]; CGPoint keyboardOriginInView = [self.view convertPoint:keyboardFinalFrame.origin fromView:nil]; CGFloat intersectionY = CGRectGetMaxY(self.view.framE) - keyboardOriginInView.y; if (intersectionY >= 0) { self.textViewBottomcatonsTraint.constant = intersectionY + originalTextViewBottomcatonsTraint; [self.textView setNeedsLayout]; }
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