大佬教程收集整理的这篇文章主要介绍了iOS虚拟键盘大小没有通知中心，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。
我很熟悉
NSDictionary *info = [notification userInfo];
CGSize kbSize = [self.view convertRect:
[info[UIKeyboardFrameBeginUserInfoKey] CGRectValue]
fromView:nil].size;
但是,它对我不起作用,因为当用户点击可能半隐藏的文本字段时,我没有收到键盘通知.
所以我调用textFieldDidBeginEditing：中的方法,在键盘发送消息之前调用它,所以我不知道第一次点击时的KB大小.
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
[nc addObserver:self selector:@selector(keyboardChangedStatus:) name:UIKeyboardWillShowNotification object:nil];
[nc addObserver:self selector:@selector(keyboardChangedStatus:) name:UIKeyboardWillHideNotification object:nil];
}
- (void)viewWillDisappear:(BOOL)animated {
[super viewWillDisappear:animated];
NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
[nc removeObserver:self name:UIKeyboardWillShowNotification object:nil];
[nc removeObserver:self name:UIKeyboardWillHideNotification object:nil];
}
#pragma mark - Get Keyboard size
- (void)keyboardChangedStatus:(NSNotification*)notification {
//get the size!
CGRect keyboardRect;
[[[notification userInfo] objectForKey:UIKeyboardFrameEndUserInfoKey] getValue:&keyboardRect];
keyboardHeight = keyboardRect.size.height;
//move your view to the top,to display the textfield..
[self moveView:notification keyboardHeight:keyboardHeight];
}
#pragma mark View Moving
- (void)moveView:(NSNotification *) notification keyboardHeight:(int)height{
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.3];
[UIView setAnimationBeginsFromCurrentState:YES];
CGRect rect = self.view.frame;
if ([[notification name] isEqual:UIKeyboardWillHideNotification]) {
// revert back to the normal state.
rect.origin.y = 0;
hasScrolledToTop = YES;
}
else {
// 1. move the view's origin up so that the text field that will be hidden come above the keyboard (you need to adjust the value here)
rect.origin.y = -height;
}
self.view.frame = rect;
[UIView commitAnimations];
}
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