- (void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor = QFMRGBColor(222, 222, 222);
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillChangeFrame:) name:UIKeyboardWillChangeFrameNotification object:nil];
}
- (void)keyboardWillChangeFrame:(NSNotification *)note{
CGRect frame = [note.userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue];
CGFloat duration = [note.userInfo[UIKeyboardAnimationDurationUserInfoKey] doubleValue];
self.viewToBottm.constant = SCREEN_HEIGHT - frame.origin.y;
[UIView animateWithDuration:duration animations:^{
[self.view layoutIfNeeded];
}]; // textfield为xib创建，self.viewToBottm.constant为textfield距离view底部的距离
}
- (void)dealloc{
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
效果如图
