小编Mar*_*zer的帖子

在我的应用程序中,我想调整UITextView(self.message),导航控制器的视图,我想self.selectedMedia在键盘显示时更改UIScrollView()的位置.要实现这一点,我正在使用此委托方法:

- (void)keyboardWillShow:(NSNotification *)notification
{
NSDictionary* userInfo = [notification userInfo];

NSTimeInterval animationDuration;
UIViewAnimationCurve animationCurve;
CGRect keyboardFrame;
CGRect navigationControllerFrame = self.navigationController.view.frame;
CGRect textViewFrame = self.message.frame;
CGFloat keyboardHeight;

[[userInfo objectForKey:UIKeyboardAnimationCurveUserInfoKey] getValue:&animationCurve];
[[userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey] getValue:&animationDuration];
[[userInfo objectForKey:UIKeyboardFrameBeginUserInfoKey] getValue:&keyboardFrame];

keyboardHeight = keyboardFrame.size.height;

[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:animationDuration];
[UIView setAnimationCurve:animationCurve];

[self.navigationController.view setFrame:CGRectMake(
                                                    navigationControllerFrame.origin.x,
                                                    navigationControllerFrame.origin.y,
                                                    navigationControllerFrame.size.width,
                                                    navigationControllerFrame.size.height - keyboardHeight
                                                    )];
[self.message setFrame:CGRectMake(
                                  textViewFrame.origin.x,
                                  textViewFrame.origin.y,
                                  textViewFrame.size.width,
                                  textViewFrame.size.height - keyboardHeight)];

if (self.selectedMedia.hidden == NO) {
    [self.selectedMedia setFrame:CGRectMake(
                                            self.selectedMedia.frame.origin.x,
                                            self.selectedMedia.frame.origin.y - keyboardHeight,
                                            self.selectedMedia.frame.size.width,
                                            self.selectedMedia.frame.size.height
                                            )]; …