Detect inside Android Browser or WebView

Question

How can Javascript detect whether a website is loaded in Android's stock browser or loaded in a WebView of another app? I would like to run slightly different code in these two cases.

Answer 1

Activity -> onCreate

this.webView.getSettings().setUserAgentString(     this.webView.getSettings().getUserAgentString()      + " "     + getString(R.string.user_agent_suffix) ); 

Res -> Values -> strings.xml

<string name="user_agent_suffix">AppName/1.0</string> 

Javascript

function() isNativeApp {     return /AppName\/[0-9\.]+$/.test(navigator.userAgent); } 

Answer 2

You can check the server variables on the page that is being requested to see if it is coming from your app and set a javascript variable accordingly

if($_SERVER['HTTP_X_REQUESTED_WITH'] == "com.company.app")     echo 'var isAndroidApp=true;'; else     echo 'var isAndroidApp=false;'; 

• replace com.company.app with your package name