在我的应用程序中,我有一个注册表单,有一些textFields(电子邮件,密码等...),当我开始在这些textFields中键入某个地方(显示键盘)时,我的视图向上移动,而我&# 39;我无法看到在我的文本字段中键入的内容。
只有iOS8才会出现此问题。
如果有人知道如何阻止这个操作系统功能,我会感激不尽。
的问候。
答案 0 :(得分:1)
以下是我的代码,用于管理与键盘外观和消失相关的问题。
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
[self registerForKeyboardNotifications];
}
- (void)registerForKeyboardNotifications
{
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(keyboardWasShown:)
name:UIKeyboardDidShowNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(keyboardWillBeHidden:)
name:UIKeyboardWillHideNotification object:nil];
}
#pragma mark - Keyboard Delegate
// Called when the UIKeyboardDidShowNotification is sent.
- (void)keyboardWasShown:(NSNotification*)aNotification
{
NSDictionary* info = [aNotification userInfo];
CGSize kbSize = [[info objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;
//to overcome the bug with keyboard height for os7 and earlier
if (![UIDeviceHardware isOS8Device]) {
CGRect kbRect = [[info objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue];
kbRect = [self.view convertRect:kbRect fromView:nil];
kbSize = kbRect.size;
}
UIEdgeInsets contentInsets = UIEdgeInsetsMake(0.0, 0.0, kbSize.height, 0.0);
_scrollView.contentInset = contentInsets;
_scrollView.scrollIndicatorInsets = contentInsets;
// If active text field is hidden by keyboard, scroll it so it's visible
// Your app might not need or want this behavior.
CGRect aRect = self.view.frame;
aRect.size.height -= kbSize.height;
if (!CGRectContainsPoint(aRect, activeField.frame.origin) ) {
[_scrollView scrollRectToVisible:activeField.frame animated:YES];
}
}
// Called when the UIKeyboardWillHideNotification is sent
- (void)keyboardWillBeHidden:(NSNotification*)aNotification
{
UIEdgeInsets contentInsets = UIEdgeInsetsZero;
_scrollView.contentInset = contentInsets;
_scrollView.scrollIndicatorInsets = contentInsets;
}
您可以从activeField
选择UITextfield Delegate
。
答案 1 :(得分:0)
这对你有用..
- (void)textFieldDidBeginEditing:(UITextField *)textField
{
if (textField == (UITextField *)[self.view viewWithTag:TEXTFIELD_MOBILE_TAG])
{
CGRect selfframe = CGRectMake([self.view viewWithTag:VIEW_PARENT_TAG].frame.origin.x, [self.view viewWithTag:VIEW_PARENT_TAG].frame.origin.y - 80, [self.view viewWithTag:VIEW_PARENT_TAG].frame.size.width, [self.view viewWithTag:VIEW_PARENT_TAG].frame.size.height);
[UIView animateWithDuration:0.3 animations:^{ [self.view viewWithTag:VIEW_PARENT_TAG].frame = selfframe;}];
[textField becomeFirstResponder];
}
}
- (void)textFieldDidEndEditing:(UITextField *)textField
{
if (textField == (UITextField *)[self.view viewWithTag:TEXTFIELD_MOBILE_TAG])
{
CGRect selfframe = CGRectMake([self.view viewWithTag:VIEW_PARENT_TAG].frame.origin.x, [self.view viewWithTag:VIEW_PARENT_TAG].frame.origin.y + 80, [self.view viewWithTag:VIEW_PARENT_TAG].frame.size.width, [self.view viewWithTag:VIEW_PARENT_TAG].frame.size.height);
[UIView animateWithDuration:0.3 animations:^{ [self.view viewWithTag:VIEW_PARENT_TAG].frame = selfframe;}];
[textField resignFirstResponder];
}
}