IOS7 UITextView cursor problem, ios7uitextview

IOS7 UITextView cursor problem, ios7uitextview

Recently, in the project, when UITextView appears on ios7, the last line of the time mark disappears and the last line does not appear. The last line becomes blind. The stackOverFlow website pointed out that it is an iOS 7 bug, add the following code:

 1 -(void)textViewDidChange:(UITextView *)textView { 2     CGRect line = [textView caretRectForPosition: 3                    textView.selectedTextRange.start]; 4     CGFloat overflow = line.origin.y + line.size.height 5     - ( textView.contentOffset.y + textView.bounds.size.height 6        - textView.contentInset.bottom - textView.contentInset.top ); 7     if ( overflow > 0 ) { 8         // We are at the bottom of the visible text and introduced a line feed, scroll down (iOS 7 does not do it) 9         // Scroll caret to visible area10         CGPoint offset = textView.contentOffset;11         offset.y += overflow + 7; // leave 7 pixels margin12         // Cannot animate with setContentOffset:animated: or caret will not appear13         [UIView animateWithDuration:.2 animations:^{14             [textView setContentOffset:offset];15         }];16     }17 }