ios开发: 当点击其他地方时, 隐藏文本框弹出的键盘

- (void)viewDidLoad {

[super viewDidLoad];

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];

}

-(void)keyboardHide:(UITapGestureRecognizer*)tap{

[_userNameTF resignFirstResponder];

}