///返回键盘处理
方法1
此方法只能针对继承自 UIControl的子类适用
-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
[self.view endEditing:YES];
}
方法2
//添加手势方法监听键盘处理的方法
UITapGestureRecognizer *tapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(keyboardHide)];
//设置成NO表示当前控件响应后会传播到其他控件上，默认为YES。
tapGestureRecognizer.cancelsTouchesInView = NO;
//将触摸事件添加到当前view
[self.view addGestureRecognizer:tapGestureRecognizer];
//返回键盘处理的方法
-(void)keyboardHide{
[self.view endEditing:YES];
}
//返回 text return键隐藏键盘
-(BOOL)textFieldShouldReturn:(UITextField *)textField {
[self.view endEditing:YES];
return YES;
}
//3.另外一种方法（取消文本的第一响应事件）
//让键盘隐藏
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
[_nameTextField resignFirstResponder];
[_ageTextField resignFirstResponder];
[_IDTextField resignFirstResponder];
}