Question

我希望有两个水龙头使其全屏，两个水龙头返回常规。但是，两个GestureRecognizer是冲突的，并且都被调用，导致屏幕不变。我该如何解决这个问题？

这是我的代码：

-(void) tap2Full {    

    //Teste apartir daqui "TAP"
    UITapGestureRecognizer *fullScreen = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(fullScreen)];
    fullScreen.numberOfTapsRequired = 1;

    UITapGestureRecognizer *screenOut = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(screenOut)];
    screenOut.numberOfTapsRequired = 2;

    // stops tapOnce from overriding tapTwice
    [fullScreen requireGestureRecognizerToFail:screenOut];

    fullScreen.delegate = self;
    screenOut.delegate = self;

    [self.webView addGestureRecognizer:fullScreen];
    [self.webView addGestureRecognizer:screenOut];

}

- (void)fullScreen {
     self.navigationController.navigationBar.layer.zPosition = -1;
    [self.view bringSubviewToFront:self.webView];
    self.webView.frame = CGRectMake(self.view.frame.origin.x, self.view.frame.origin.y, self.view.frame.size.width, self.view.frame.size.height);
    self.webView.layer.zPosition = 9;
    [[UIApplication sharedApplication] setStatusBarHidden:YES];

}

- (void)screenOut {
    self.navigationController.navigationBar.layer.zPosition = 1;
    self.webView.frame = CGRectMake(self.view.frame.origin.x, 113, 320, 455);
    [[UIApplication sharedApplication] setStatusBarHidden:NO];

}

Answer 1

我的代码已经改变了。请它希望这对你有用。

//Global BOOL flag

BOOL isTapOnScreen;

-(void) tap2Full {    

    isTapOnScreen = TRUE;
    //Teste apartir daqui "TAP"
    UITapGestureRecognizer *fullScreen = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(fullScreen)];
    fullScreen.numberOfTapsRequired = 2;
    fullScreen.delegate = self;

   [self.webView addGestureRecognizer:fullScreen];
}

- (void)fullScreen {
    if(isTapOnScreen == FALSE) {

          self.navigationController.navigationBar.layer.zPosition = 1;
          self.webView.frame = CGRectMake(self.view.frame.origin.x, 113, 320, 455);
          [[UIApplication sharedApplication] setStatusBarHidden:NO];
          isTapOnScreen = TRUE;
    }
    else {
         self.navigationController.navigationBar.layer.zPosition = -1;
         [self.view bringSubviewToFront:self.webView];
         self.webView.frame = CGRectMake(self.view.frame.origin.x, self.view.frame.origin.y, self.view.frame.size.width,    self.view.frame.size.height);
         self.webView.layer.zPosition = 9;
         [[UIApplication sharedApplication] setStatusBarHidden:YES];
         isTapOnScreen = FALSE;
   }
}

谢谢.. :)）

Answer 2

以下是两种方法。第一个是仅使用一个手势，第二个是您需要删除并重新添加它们的位置。

使用此方法，您只使用一个gestureRecognizer：

@implementation YourController {
    BOOL isFullScreen;
}

-(void) tap2Full {    

    isFullScreen = FALSE;
    UITapGestureRecognizer *toggleScreen = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(toggleScreen)];
    toggleScreen.numberOfTapsRequired = 2;
    toggleScreen.delegate = self;

   [self.webView addGestureRecognizer:fullScreen];
}

- (void) toggleScreen {
    if(isFullScreen) {
          self.navigationController.navigationBar.layer.zPosition = 1;
          self.webView.frame = CGRectMake(self.view.frame.origin.x, 113, 320, 455);
          [[UIApplication sharedApplication] setStatusBarHidden:NO];
          isFullScreen = FALSE;
    } else {
         self.navigationController.navigationBar.layer.zPosition = -1;
         [self.view bringSubviewToFront:self.webView];
         self.webView.frame = CGRectMake(self.view.frame.origin.x, self.view.frame.origin.y, self.view.frame.size.width,    self.view.frame.size.height);
         self.webView.layer.zPosition = 9;
         [[UIApplication sharedApplication] setStatusBarHidden:YES];
         isFullScreen = TRUE;
   }
}

使用这种解决问题的方法，您将删除当您不需要时，可以使用gestureRecognizers，并在您重新添加它们时重新添加它们做。

您需要做的是在此处添加手势：

@implementation YourController {
    UITapGestureRecognizer *fullScreen;    
    UITapGestureRecognizer *screenOut;
}

然后更改tap2F：

    fullScreen = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(fullScreen)];
    fullScreen.numberOfTapsRequired = 2;

    screenOut = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(screenOut)];
    screenOut.numberOfTapsRequired = 2;

然后修改fullScreen：

- (void)fullScreen {
     self.navigationController.navigationBar.layer.zPosition = -1;
    [self.view bringSubviewToFront:self.webView];
    self.webView.frame = CGRectMake(self.view.frame.origin.x, self.view.frame.origin.y, self.view.frame.size.width, self.view.frame.size.height);
    self.webView.layer.zPosition = 9;
    [[UIApplication sharedApplication] setStatusBarHidden:YES];

    [self.webView removeGestureRecognizer: fullScreen];
    for (UIGestureRecognizer* recognizer in self.webView.gestureRecognizers) {
            if (![recognizer isEqual: screenOut]) {
            [self.webView addGestureRecognizer: screenOut];
            }
    }
}

并更改screenOut：

- (void)screenOut {
    self.navigationController.navigationBar.layer.zPosition = 1;
    self.webView.frame = CGRectMake(self.view.frame.origin.x, 113, 320, 455);
    [[UIApplication sharedApplication] setStatusBarHidden:NO];

    [self.webView removeGestureRecognizer: screenOut];

    for (UIGestureRecognizer* recognizer in self.webView.gestureRecognizers) {
        if (![recognizer isEqual: fullScreen]) {
        [self.webView addGestureRecognizer:fullScreen];
        }
    }
}

两次点击即可完成，两次点击屏幕即可恢复正常

2 个答案: