Iphone 如何允许UITapGestureRecognitor检测web视图上的点击？

我已经在Xcode中为iPhone制作了web浏览器，要退出web浏览器并返回主页，您可以在屏幕上点击三次，但该手势只在屏幕顶部和底部的工具栏上起作用，而不会在web视图上起作用

我能做什么

这是我的密码

.h文件

Implement should recognize与GestureRecognizer委托同时识别，并返回YES

实施详情：

将UIgestureRecognitizerDelegate协议添加到.h文件中

@interface ViewController : UIViewController <UIGestureRecognizerDelegate>

- (void)viewDidLoad
{
    [super viewDidLoad];

    // Do any additional setup after loading the view.
    NSString *homePageString = @"http://www.google.com";
    NSURL *homePage = [NSURL URLWithString:homePageString];
    NSURLRequest *requestHomePage = [NSURLRequest requestWithURL:homePage];
    [webview loadRequest:requestHomePage];
    forwards.enabled = NO;
    backwards.enabled = NO;
    UIAlertView *touchHelp = [[UIAlertView alloc] initWithTitle:@"Alert, Please Read" message:@"To go back to the App Selection Page please anywhere on the top or bottom toolbar three times" delegate:nil cancelButtonTitle:@"Okay" otherButtonTitles:nil, nil];
    [touchHelp show];
    UITapGestureRecognizer *tapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapDetected:)];
    tapRecognizer.numberOfTapsRequired = 3;
    [self.view addGestureRecognizer:tapRecognizer];
}

- (void)tapDetected:(UITapGestureRecognizer *)tapRecognizer {
    [self dismissViewControllerAnimated:YES completion:nil];
}

@interface ViewController : UIViewController <UIGestureRecognizerDelegate>

-(BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer 
 {
    return YES
 }