在UIWebView中向后/向前滑动手势？ [英] Swipe gesture for back/forward in UIWebView?

问题描述

我的应用程序中有一个WebView。

因为它是一个标签式应用程序，所以我无法在网站上添加用于返回/转发的按钮。 / p>

我想通过滑动返回/前进。右侧滑动从左侧/边缘返回...就像在iOS浏览器浏览器中一样。

我该怎么办？我想我应该使用Screen Edge Pan Gesture Recognizer，对吗？

解决方案

为什么不使用滑动手势识别器呢？ / p>

  UISwipeGestureRecognizer * swipeLeft = [[UISwipeGestureRecognizer alloc] initWithTarget：self action：@selector（handleSwipe :)]; 
 UISwipeGestureRecognizer * swipeRight = [[UISwipeGestureRecognizer alloc] initWithTarget：self action：@selector（handleSwipe :)]; 
 
 //设置滑动方向。 
 [swipeLeft setDirection：UISwipeGestureRecognizerDirectionLeft]; 
 [swipeRight setDirection：UISwipeGestureRecognizerDirectionRight]; 
 
 //在WebView上添加滑动手势
 [webView addGestureRecognizer：swipeLeft]; 
 [webView addGestureRecognizer：swipeRight]; 
 
  - （void）handleSwipe :( UISwipeGestureRecognizer *）刷卡{
 
 if（swipe.direction == UISwipeGestureRecognizerDirectionLeft）{
 NSLog（@Left Swipe） ; 
} 
 
 if（swipe.direction == UISwipeGestureRecognizerDirectionRight）{
 NSLog（@Right Swipe）; 
} 
 
} 
  

I have a WebView in my app.

Because it is a tabbed application I'm not able to add buttons for going back/forward on the website.

I want to go back/forward by swiping. Right swipe from the left side/edge is back… like in Safari browser for iOS.

How can I do it? I think i should use "Screen Edge Pan Gesture Recognizer", right?

解决方案

Why not just use a swipe gesture recognizer?

UISwipeGestureRecognizer *swipeLeft = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipe:)];
UISwipeGestureRecognizer *swipeRight = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipe:)];

// Setting the swipe direction.
[swipeLeft setDirection:UISwipeGestureRecognizerDirectionLeft];
[swipeRight setDirection:UISwipeGestureRecognizerDirectionRight];

// Adding the swipe gesture on WebView
[webView addGestureRecognizer:swipeLeft];
[webView addGestureRecognizer:swipeRight];

- (void)handleSwipe:(UISwipeGestureRecognizer *)swipe {

if (swipe.direction == UISwipeGestureRecognizerDirectionLeft) {
    NSLog(@"Left Swipe");
}

if (swipe.direction == UISwipeGestureRecognizerDirectionRight) {
    NSLog(@"Right Swipe");   
} 

}

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