[GitHub] cordova-plugin-inappbrowser pull request: inAppBrowser custom appl...

[NGumby <gi...@git.apache.org>]

Github user NGumby commented on the pull request:

    https://github.com/apache/cordova-plugin-inappbrowser/pull/99#issuecomment-184857676
  
    I think a better approach to communicate between an external website and the app, is to raise an event in shouldOverrideLoadUrl like this :
    
    ```
    public boolean shouldOverrideUrlLoading(WebView webView, String url) {
                LOG.d(LOG_TAG, "shouldOverrideUrlLoading:" + url);
    
                if (url.startsWith(WebView.SCHEME_TEL)) {
                    ...
                }
                else if (url.startsWith("myscheme:")) {
    				try {
    					JSONObject obj = new JSONObject();
    					obj.put("type", "customevent");
    					obj.put("url", url);
    					sendUpdate(obj, true);
    	                return true;
    				} catch (JSONException ex) {
    					LOG.e(LOG_TAG, "URI passed in has caused a JSON error.");
    				}
                }
                return false;
            }
    ```
    
    add this to InAppBrowser.js 
    
    ```
        function InAppBrowser() {
            this.channels = {
                'loadstart': channel.create('loadstart'),
                'loadstop': channel.create('loadstop'),
                'loaderror': channel.create('loaderror'),
                'customevent': channel.create('customevent'),
                'exit': channel.create('exit')
            };
        }
    
    ```
    in your app, you can then do
                  `  appBrowser.addEventListener("customevent", function(event){console.log("My custom event raised:" + event.url)});
    `
    
    from the external website, you can then have a link like
    
    `<a href="myscheme://mycustomaction?someparam=value">Custom Action in the app</a>`
    
    It works pretty well, and you can parse the url to do the custom actions!


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