view适应键盘弹出收回的高度

这几天老有人问我当调键盘出来的时候view怎么自动适应才能不覆盖住textFiled,看好了

//    键盘弹出通知
    [[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(ketBoardWillShow:) name:UIKeyboardWillShowNotification object:nil];

//    键盘回收通知
    
    [[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(ketBoardWillHide:) name:UIKeyboardWillHideNotification object:nil];


//键盘出现的时候
- (void)ketBoardWillShow:(NSNotification *)sender{
    
    NSLog(@"%@",sender);
//    获取键盘的Frame
    CGRect keyBoardRect = [sender.userInfo[UIKeyboardFrameBeginUserInfoKey]CGRectValue];
//
    CGRect frame = self.view.frame;
    
    frame.origin.y =  -keyBoardRect.size.height;
    
    self.view.frame = frame;
    
}
//键盘消失
- (void)ketBoardWillHide:(NSNotification *)sender{

    self.view.frame = [UIScreen mainScreen].bounds;
}

//点击事件
- (IBAction)btnAction:(id)sender {
    [self.filed resignFirstResponder];
    
}

ok