ios-点击屏幕，隐藏键盘

- (void)getFirstRegist{

    //结束键盘编辑

    __weak typeof(self)weakSelf = self;

    UITapGestureRecognizer *tapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(hiddenKeyBoard)];//注意是UITapGestureRecognizer

    NSOperationQueue *mainQueue = [NSOperationQueue mainQueue];//主队列

    //在键盘出现之前，这个函数会被触发（键盘内置的方法，来获取这个通知中的消息）

    [[NSNotificationCenter defaultCenter] addObserverForName:UIKeyboardWillShowNotification object:nil queue:mainQueue usingBlock:^(NSNotification *note) {

        [weakSelf.view addGestureRecognizer:tapGestureRecognizer];

    }];

    [[NSNotificationCenter defaultCenter] addObserverForName:UIKeyboardWillHideNotification object:nil queue:mainQueue usingBlock:^(NSNotification *note) {

        [weakSelf.view removeGestureRecognizer:tapGestureRecognizer];

    }];

}

- (void)hiddenKeyBoard{

    [self.view endEditing:YES];

}