Using Geolocation API in Android Emulator

In the Getting address of the current location using GeoLocation API and Google MAP api entry i talked about how to use the GeoLocation API provided as part of HTML 5 to get the current address of the user. Now Phone Gap also provides support for geolocation which means it checks if the browser on the device has support for geolocation if yes it lets it work if not it will call the native API of the underlying browser to get the the location and return it to browser. I wanted to try that so i took the content of geolocation.html and copied it in the index.html file that my phonegap application for android is using, you can download that app from here I followed these steps to build Android PhoneGap application

1. I followed the instructions in Getting Started with Android to build application that points to index.html inside the application, i tried it once to make sure that it works
2. Then i copied the content of Geolocation.html in the index.html page
3. Change the AndroidManifest.xml file to allow application to use the mock location

   
   <?xml version="1.0" encoding="utf-8"?>
   <manifest xmlns:android="http://schemas.android.com/apk/res/android"
       package="com.webspherenotes.phonegap"
       android:versionCode="1"
       android:versionName="1.0" >
   
       <uses-sdk android:minSdkVersion="8" />
       <uses-permission android:name="android.permission.CAMERA" />
     <uses-permission android:name="android.permission.VIBRATE" />
     
     <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
     <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
     <uses-permission android:name="android.permission.ACCESS_LOCATION_EXTRA_COMMANDS" />
     <uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION" />
    
    <uses-permission android:name="android.permission.READ_PHONE_STATE" />
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.RECEIVE_SMS" />
     <uses-permission android:name="android.permission.RECORD_AUDIO" />
     <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
     <uses-permission android:name="android.permission.READ_CONTACTS" />
     <uses-permission android:name="android.permission.WRITE_CONTACTS" />
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> 
     <uses-permission android:name="android.permission.GET_ACCOUNTS" />
     <uses-permission android:name="android.permission.BROADCAST_STICKY" />
       <application
           android:icon="@drawable/ic_launcher"
           android:label="@string/app_name" >
           <activity
               android:name=".HelloPhoneGapActivity"
               android:label="@string/app_name" 
               android:configChanges="orientation|keyboardHidden" >
               <intent-filter>
                   <action android:name="android.intent.action.MAIN" />
   
                   <category android:name="android.intent.category.LAUNCHER" />
               </intent-filter>
           </activity>
       </application>
   </manifest>
   

4. The android emulator does not know how to find out current location of the user, so we have to setup mock location i.e. hard code a location for the user. For that you have two options either use the DDMS perspective in your Eclipse and after your emulator is started select it and enter value of longitude and latitude and click on send like this.
   
5. Or open a Telnet session to the emulator by executing telnet localhost 5554 (you can get port number 5554 from the emulator window it would be in title bar) and then in the telnet window use geo fix -121.9754144 37.5669038 command to set the longitude and latitude like this
   

Now when i run this application in the Android emulator i can see it displaying the address for location that i sent to the emulator like this