テキストフィールドを持つビューがあります。また、キーボードを非表示にするボタンを実行するようにキーボードを構成しました。キーボードが表示されているときに上にスクロールするために、デリゲートをtxtfieldに添付しました。正常に動作していますが、完了をクリックしてキーボードを非表示にすると、ビューは上にスクロールしたままになり、ユーザーは手動でスクロールして戻す必要があります..これを修正する方法/ポインタ..
以下は、スクロールアップ機能を実現するための私のコードです..
- (void)viewWillAppear:(BOOL)animated
{
[super viewDidAppear:animated];
keyboardIsShown = NO;
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(keyboardWillShow:)
name:UIKeyboardWillShowNotification
object:self.view.window];
// register for keyboard notifications
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(keyboardWillHide:)
name:UIKeyboardWillHideNotification
object:self.view.window];
}
- (void)viewWillDisappear:(BOOL)animated
{
[super viewDidDisappear:animated];
[[NSNotificationCenter defaultCenter] removeObserver:self
name:UIKeyboardWillShowNotification
object:nil];
[[NSNotificationCenter defaultCenter] removeObserver:self
name:UIKeyboardWillHideNotification
object:nil];
}
- (void)keyboardWillShow:(NSNotification *)n
{
if (keyboardIsShown) {
return;
}
NSDictionary* userInfo = [n userInfo];
// get the size of the keyboard
CGSize keyboardSize = [[userInfo objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;
// resize the noteView
CGRect viewFrame = self.scrollView.frame;
// I'm also subtracting a constant kTabBarHeight because my UIScrollView was offset by the UITabBar so really only the portion of the keyboard that is leftover pass the UITabBar is obscuring my UIScrollView.
viewFrame.size.height -= (keyboardSize.height - kTabBarHeight);
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationBeginsFromCurrentState:YES];
// The kKeyboardAnimationDuration I am using is 0.3
[UIView setAnimationDuration:kKeyboardAnimationDuration];
[self.scrollView setFrame:viewFrame];
[UIView commitAnimations];
scrollView.contentSize = formView.frame.size;
keyboardIsShown = YES;
}
- (void)keyboardWillHide:(NSNotification *)n
{
NSDictionary* userInfo = [n userInfo];
// get the size of the keyboard
CGSize keyboardSize = [[userInfo objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;
// resize the scrollview
CGRect viewFrame = self.scrollView.frame;
// I'm also subtracting a constant kTabBarHeight because my UIScrollView was offset by the UITabBar so really only the portion of the keyboard that is leftover pass the UITabBar is obscuring my UIScrollView.
viewFrame.size.height += (keyboardSize.height - kTabBarHeight);
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationBeginsFromCurrentState:YES];
// The kKeyboardAnimationDuration I am using is 0.3
[UIView setAnimationDuration:kKeyboardAnimationDuration];
[self.scrollView setFrame:viewFrame];
[UIView commitAnimations];
keyboardIsShown = NO;
}