添加键盘弹起和收起的监听
1.监听键盘的通知
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyBoardDidShow:) name:UIKeyboardDidShowNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyBoardDidHide:) name:UIKeyboardDidHideNotification object:nil];
}
- (void)viewWillDisappear:(BOOL)animated{
[super viewWillDisappear:animated];
[[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardDidShowNotification object:nil];
[[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardDidHideNotification object:nil];
}
2.textfiled的代理方法,获取点击的是那个view
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField {
self.tmpView = (InputView *)textField.superview;
return YES;
}
3.键盘弹出的方法
- (void)keyBoardDidShow:(NSNotification *)notification {
CGRect rect = [[[notification userInfo] objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue];
// 打印结构体的方法
// NSLog(@"%@", NSStringFromCGRect(rect));
CGFloat kbHeight = rect.size.height;
CGFloat offset = (_tmpView.frame.origin.y + _tmpView.frame.size.height + 40 + _backScrollView.frame.origin.y) - (self.view.frame.size.height - kbHeight);
double duration = [[notification.userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey] doubleValue];
if(offset > 0) {
[UIView animateWithDuration:duration animations:^{
self.view.frame = CGRectMake(0.0f, -offset, self.view.frame.size.width, self.view.frame.size.height);
}];
}
}
4.键盘回收的方法
- (void)keyBoardDidHide:(NSNotification *)notif {
double duration = [[notif.userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey] doubleValue];
[UIView animateWithDuration:duration animations:^{
self.view.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height);
}];
}
