By using this feature an application can be made invokable from browser or native android application. When the application is invoked from browser/android-app,an InvokeEvent is dispatched to the application.
For making an application invokable from browser,add this in your application descriptor (as child of application element):

<android>
    <manifestAdditions>
    <![CDATA[
        <manifest>
            <application>
                 <activity>
                     <intent-filter>
                         <action android:name="android.intent.action.MAIN"/>
                         <category android:name="android.intent.category.LAUNCHER"/>
                     </intent-filter>
                     <intent-filter>
                         <action android:name="android.intent.action.VIEW"/>
                         <category android:name="android.intent.category.BROWSABLE"/>
                         <category android:name="android.intent.category.DEFAULT"/>
                         <data android:scheme="testapp"/>
                     </intent-filter>
                 </activity>
             </application>
         </manifest>
     ]]>
     </manifestAdditions>
</android>

Now to launch your application from browser,provide the url as: testapp://. An example is:

<a href="testapp://">click here to launch air test app from browser</a>

Clicking on this link will launch your application.

If you want to pass additional arguments to your application from browser,use something like this:

<a href="testapp://arg1=value&secondArgument=someValue">click here to launch air test app from browser</a>

Once your application gets launched,fetch the arguments property of received InvokeEvent. This will contain the complete URI (testapp://arg1=value&secondArgument=someValue) and you can parse it to extract the arguments.

从here起.