点击屏幕隐藏键盘的正确写法

方法一：

- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{    [self.view endEditing:YES];}

方法二：

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {    [self.userNameView.inputTextField resignFirstResponder];    [self.passwordView.inputTextField resignFirstResponder];}