IOS键盘遮盖问题解决办法

- 日理万妓 2022-07-17 04:50 238阅读 0赞

1.添加键盘显示和隐藏通知事件响应

<pre name="code" class="objc">  // 添加键盘显示/隐藏的通知
        [[NSNotificationCenter defaultCenter] addObserver:self
         
                                                 selector:@selector(keyboardWillShow:)
         
                                                     name:UIKeyboardDidShowNotification object:nil];
        
        
        [[NSNotificationCenter defaultCenter] addObserver:self
         
                                                 selector:@selector(keyboardWillHide:)
         
                                                     name:UIKeyboardWillHideNotification object:nil];

2.事件响应

<pre name="code" class="objc">#pragma mark - Notification Method
    
    ///键盘显示事件
    - (void) keyboardWillShow:(NSNotification *)notification {
        
     
        //获取键盘高度，在不同设备上，以及中英文下是不同的
        CGFloat kbHeight = [[notification.userInfo objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue].size.height;
        // 取得键盘的动画时间，这样可以在视图上移的时候更连贯
        double duration = [[notification.userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey] doubleValue];
        CGFloat offset=输入框下边沿纵坐标-(self.view.frame.size.height-kbHeight);
        //将视图上移计算好的偏移
        if(offset > 0) {
            [UIView animateWithDuration:duration animations:^{
                self.view.frame = CGRectMake(0.0f, -offset, self.view.frame.size.width, self.view.frame.size.height);
            }];
        }
    }
    
    ///键盘消失事件
    - (void) keyboardWillHide:(NSNotification *)notify {
        // 键盘动画时间
        double duration = [[notify.userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey] doubleValue];
        
        //视图下沉恢复原状
        [UIView animateWithDuration:duration animations:^{
            self.view.frame = CGRectMake(0, 64, self.view.frame.size.width, self.view.frame.size.height);
        }];
    }