Implementing on Webview

Refer to the following information when using a WebView in your Android app:

WebViewClient

shouldOverrideUrlLoading

Do not put webView.loadUrl(url) within the shouldOverrideUrlLoading function. If there is a separate scheme, refer to the following code and define it within that function.

webView.webViewClient = object : WebViewClient() {
    override fun shouldOverrideUrlLoading(
        view: WebView?,
        request: WebResourceRequest?
    ): Boolean {
        // if you have custom scheme
        val url = request?.url ?: return super.shouldOverrideUrlLoading(view, request)
        if (url.toString().startsWith("market")) {
            val intent = Intent(Intent.ACTION_VIEW).apply {
                data = url
            }
            startActivity(intent)
            return true
        }
        return super.shouldOverrideUrlLoading(view, request)
    }
}

WebChromeClient

onCreateWindow

1. If you want to switch windows when clicking on a product, refer to the following code.

webView.webChromeClient = object : WebChromeClient() {
    override fun onCreateWindow(
        view: WebView?,
        isDialog: Boolean,
        isUserGesture: Boolean,
        resultMsg: Message?
    ): Boolean {
        view ?: return true
        resultMsg ?: return true
        val subWebView = WebView(view.context)
        subWebView.webViewClient = object : WebViewClient() {
            override fun shouldOverrideUrlLoading(view: WebView?, url: String?): Boolean {
                url ?: return false
                if (url.startsWith("http")) {
                    // if you want to open current webView
                    webView.loadUrl(url)
                }
                return true
            }
            override fun shouldOverrideUrlLoading(
                view: WebView?,
                request: WebResourceRequest?
            ): Boolean {
                val url = request?.url?.toString() ?: return false
                if (url.startsWith("http")) {
                    // if you want to open current webView
                    webView.loadUrl(url)
                }
                return true
            }
        }
        val viewTransport = (resultMsg.obj as? WebView.WebViewTransport) ?: return true
        viewTransport.webView = subWebView
        resultMsg.sendToTarget()
        return true
    }
}

2. If you want to open a new window when clicking on a product, refer to the following code.

webView.webChromeClient = object : WebChromeClient() {
    override fun onCreateWindow(
        view: WebView?,
        isDialog: Boolean,
        isUserGesture: Boolean,
        resultMsg: Message?
    ): Boolean {
        view ?: return true
        resultMsg ?: return true
        val subWebView = WebView(view.context)
        subWebView.webViewClient = object : WebViewClient() {
            override fun shouldOverrideUrlLoading(view: WebView?, url: String?): Boolean {
                url ?: return false
                if (url.startsWith("http")) {
                    // if you want to open new page
                    val intent = Intent(Intent.ACTION_VIEW).apply {
                        data = Uri.parse(url)
                    }
                    startActivity(intent)
                }
                return true
            }
            override fun shouldOverrideUrlLoading(
                view: WebView?,
                request: WebResourceRequest?
            ): Boolean {
                val url = request?.url?.toString() ?: return false
                if (url.startsWith("http")) {
                    // if you want to open new page
                    val intent = Intent(Intent.ACTION_VIEW).apply {
                        data = Uri.parse(url)
                    }
                    startActivity(intent)
                }
                return true
            }
        }
        val viewTransport = (resultMsg.obj as? WebView.WebViewTransport) ?: return true
        viewTransport.webView = subWebView
        resultMsg.sendToTarget()
        return true
    }
}