Open android application from a web page

Try this:

Make your links look like this:

<a href="intent:#Intent;action=my_action;end">Link to my stuff</a>

Also have a look at Launch custom android application from android browser

AndroidMainfest declare:

<activity android:name="...">
<intent-filter>    
   <action android:name="android.intent.action.VIEW" />
   <category android:name="android.intent.category.DEFAULT" />    
   <category android:name="android.intent.category.BROWSABLE" />
   <data
     android:host="hostName"
     android:path="path"
     android:scheme="schemeName" />
   </intent-filter>
</activity>

you can let to invoke

<a href = "schemeName://hostName/path">

or add param similar url in brower

<a href = "schemeName://hostName/path?id=1&name=mark">

One way as 林平君 saied,and another way by invoking js method ,code as follow:

function openAActivity(){
     window.location = "schemeName://hostName/path"

}

this method will send an Android intent to start specified activity.