Android Tutorial

By : Ketan Bhimani

388 

You can define the JavaScriptExtensions class as a subclass within

the activity as a subclass with a single method that can trigger

Android Toast messages:

class JavaScriptExtensions {
public static final int TOAST_LONG = Toast.LENGTH_LONG;
public static final int TOAST_SHORT = Toast.LENGTH_SHORT;
public void toast(String message, int length) {
Toast.makeText(SimpleWebExtension.this, message, length).show();
}
}

The JavaScript code has access to everything in the

JavaScriptExtensions class, including the member variables as well

as the methods. Return values work as expected from the

methods, too. Now switch your attention to defining the web page

to load in the WebView control. For this example, simply create a

file called sample.html in the /assets directory of the application.

The contents of the sample.html file are shown here:

This is a test.