How to Search for Any Uiwebview Component Usage Inside a Current Project

How to search for any UIWebView component usage inside a current project?

Hey I tried searching in Xcode.
Couple of the third party libraries used it. (FBSDK for example)
I updated those libraries but that wasn't sufficient.

On the next upload the scary email arrived again.

Then I found this article:
https://medium.com/@zivchen_42755/for-me-that-wasnt-enough-it-didn-t-found-all-of-them-thats-weird-something-to-do-with-pod-i-a068d55b7fab

and in the comments someone mentioned grep being the medicine.

So I tried grep -r UIWebView /Path/To/Project/*

And it found a couple of the binary frameworks that also use UIWebView. (GoogleSignin, Crashlytics ...)
I updated those too.

On the next upload there was no scary email :D

iOS - UIWebView replaced with WKWebView, but for Apple it’s still there

Try from terminal in your base project folder

grep -r "UIWebView" .

(Be careful to "dot" at the end of line)

This will print out all SDK's (including Pods) which are currently using UIWebView.

Replaced UIWebView with WKWebView, but still same error from Apple

How can I check if the UIWebView is completely removed from the project or not?

Solution is:

1. Open terminal. Open your project root folder in terminal.
2. Run Command: grep -r "UIWebView" .
3. This command will list all the pods that contains “UIWebView”. No either update these pods or remove these pods and ren the step 2 command again. Repeat till all “UIWebView” matches are not removed.

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Below are some steps that will guide you to update existing UIWebView to WKWebView.

Import the “WebKit” class to the Controller.

Suppose you are using a UIWebView named “webViewMain”. Then go to your storyboard and simply replace the UIWebView with UIView. Make sure that you have added the same constraints to UIView that were added to UIWebView. Draw @IBOutlet from the new UIView to existing @IBOutlet of UIWebView.
Here you need to change the class of @IBOutlet from UIWebView to UIView because you have replaced the UIWebView with UIView.

Older Code: @IBOutlet weak var webViewMain: UIWebView!
New Code: @IBOutlet weak var webViewMain: UIView!

Then create a new variable to create a new WKWebView.
CODE: var webView : WKWebView!

Add below code where you load request/html in the UIWebView:

// WKWebView
            // init and load request in webview.
            webView = WKWebView(frame: self.webViewMain.frame)
            webView.navigationDelegate = self            
            self.webView.load(request)
            self.webViewMain.addSubview(webView)
            webView.translatesAutoresizingMaskIntoConstraints = false
// Adding constraints from webView(WKWebView) to webViewMain (UIView)
            webView.leadingAnchor.constraint(equalTo: webViewMain.leadingAnchor, constant: 0).isActive = true
            webView.trailingAnchor.constraint(equalTo: webViewMain.trailingAnchor, constant: 0).isActive = true
            webView.topAnchor.constraint(equalTo: webViewMain.topAnchor, constant: 0).isActive = true
            webView.bottomAnchor.constraint(equalTo: webViewMain.bottomAnchor, constant: 0).isActive = true
            // WKWebView

Till now you have replaced UIWebView with WKWebView .
Now comes the delegate methods.
UIWebView has delegate class: UIWebViewDelegate
WKWebView has delegate class: WKNavigationDelegate

Replace UIWebViewDelegate with WKNavigationDelegate.

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Now comes delegate method comparison for UIWebView vs WKWebView:

UIWebView: func webViewDidFinishLoad(_ webView: UIWebView)
WKWebView: func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!)

UIWebView: func webViewDidStartLoad(_ webView: UIWebView)
WKWebView: func webView(_ webView: WKWebView, didStartProvisionalNavigation navigation: WKNavigation!)

UIWebView: func webView(_ webView: UIWebView, shouldStartLoadWith request: URLRequest, navigationType: UIWebView.NavigationType) -> Bool
Here we return true/false to load/cancel the navigation.
WKWebView: func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void)
Here we returndecisionHandler(.allow)/decisionHandler(.cancel) to load/cancel the navigation.

To Scale aspect fit content of the webView (WKWebView).

var scriptContent = "var meta = document.createElement('meta');"
    scriptContent += "meta.name='viewport';"
    scriptContent += "meta.content='width=device-width';"
    scriptContent += "document.getElementsByTagName('head')[0].appendChild(meta);"
    webView.evaluateJavaScript(scriptContent, completionHandler: nil)

To set the height of the webView:

webView.evaluateJavaScript("document.readyState", completionHandler: { (complete, error) in
if complete != nil {
    self.webView.evaluateJavaScript("document.body.scrollHeight", completionHandler: {     (height, error) in
     self.constraintWebViewProductDescriptionHeight.constant = height as! CGFloat
    })
}
})

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