使用 IQKeyboardManager 這個開源庫,基本可以應(yīng)對大部分情況,但是在某些情況下,這個框架會有bug,比如只能自己來實現(xiàn)了

使用KVO監(jiān)聽鍵盤彈出的通知即可:
這里我是用的是ReactiveCocoa 來實現(xiàn)的

    [[[NSNotificationCenter defaultCenter] rac_addObserverForName:UIKeyboardWillChangeFrameNotification object:nil] subscribeNext:^(id x) {
        NSNotification *noti = x;
        CGFloat duration = [noti.userInfo [UIKeyboardAnimationDurationUserInfoKey] floatValue] ;
        //
        CGRect keyboardFrame = [noti.userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue];
        if (keyboardFrame.origin.y >= self.view.height) { // 鍵盤未彈出
            [UIView animateWithDuration:duration animations:^{
                //
                self.bottomToolBarView.transform = CGAffineTransformIdentity;
            }];
        } else { // 鍵盤彈出
            [UIView animateWithDuration:duration animations:^{
                //
                self.bottomToolBarView.transform = CGAffineTransformMakeTranslation(0, -keyboardFrame.size.height);
            }];
        }
    }];

如果有使用IQKeyboardManager,建議在頁面關(guān)閉IQKeyboardManager的功能

- (void)viewWillAppear:(BOOL)animated {
    // 關(guān)閉 IQKeyboardManager
    [IQKeyboardManager sharedManager].enable = NO;
}

-(void)viewWillDisappear:(BOOL)animated{
    //
    [IQKeyboardManager sharedManager].enable = YES;
    
}

其它實現(xiàn):

[[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(handleKeyboard:) name:UIKeyboardWillChangeFrameNotification
                                               object:nil];

- (void)handleKeyboard:(NSNotification *)noti {
    CGFloat duration = [noti.userInfo [UIKeyboardAnimationDurationUserInfoKey] floatValue] ;
    CGRect keyboardFrame = [noti.userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue];
    if (keyboardFrame.origin.y >= self.view.height) { // 鍵盤未彈出
        [UIView animateWithDuration:duration animations:^{
            self.tableView.transform = CGAffineTransformIdentity;
        }];
    } else { // 鍵盤彈出
        [UIView animateWithDuration:duration animations:^{
            self.tableView.transform = CGAffineTransformMakeTranslation(0, -keyboardFrame.size.height);
        }];
    }
}