objective C控制点击背景时关闭键盘的代码

如下内容是关于objective C控制点击背景时关闭键盘的内容。 

- (void)viewDidLoad
{
    [super viewDidLoad];
         initWithTarget:self action:@selector(handleBackgroundTap:)];
    tapRecognizer.cancelsTouchesInView = NO;
    [self.view addGestureRecognizer:tapRecognizer];
}
 
{
    [nameField resignFirstResponder];
    [SexField resignFirstResponder];
}