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Android App A wants to track Google Play referral data for Android App B installation
<application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:debuggable="true" >
        <activity
            android:name=".LocateMeActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
       <receiver android:name="com.locateme.android.ReferralReceiver" android:exported="true">
      <intent-filter>
        <action android:name="com.android.vending.INSTALL_REFERRER" />
      </intent-filter>
    </receiver>
    </application>

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"></uses-permission>
<uses-permission android:name="android.permission.INTERNET"></uses-permission>

import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.util.HashMap;
import java.util.Map;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;

public class ReferralReceiver extends BroadcastReceiver
{
    @Override
    public void onReceive(Context context, Intent intent)
    {
        // Workaround for Android security issue: http://code.google.com/p/android/issues/detail?id=16006
        try
        {
            final Bundle extras = intent.getExtras();
            if (extras != null) {
                extras.containsKey(null);
            }
        }
        catch (final Exception e) {
            return;
        }

        Map<String, String> referralParams = new HashMap<String, String>();

        // Return if this is not the right intent.
        if (! intent.getAction().equals("com.android.vending.INSTALL_REFERRER")) { //$NON-NLS-1$
            return;
        }

        String referrer = intent.getStringExtra("referrer"); //$NON-NLS-1$
        if( referrer == null || referrer.length() == 0) {
            return;
        }

        try
        {    // Remove any url encoding
            referrer = URLDecoder.decode(referrer, "x-www-form-urlencoded"); //$NON-NLS-1$
        }
        catch (UnsupportedEncodingException e) { return; }

        // Parse the query string, extracting the relevant data
        String[] params = referrer.split("&"); // $NON-NLS-1$
        for (String param : params)
        {
            String[] pair = param.split("="); // $NON-NLS-1$
            referralParams.put(pair[0], pair[1]);
        }

        ReferralReceiver.storeReferralParams(context, referralParams);
    }

    private final static String[] EXPECTED_PARAMETERS = {
        "utm_source",
        "utm_medium",
        "utm_term",
        "utm_content",
        "utm_campaign"
    };

    private final static String PREFS_FILE_NAME = "ReferralParamsFile";

    public static void storeReferralParams(Context context, Map<String, String> params)
    {
        SharedPreferences storage = context.getSharedPreferences(ReferralReceiver.PREFS_FILE_NAME, Context.MODE_PRIVATE);
        SharedPreferences.Editor editor = storage.edit();

        for(String key : ReferralReceiver.EXPECTED_PARAMETERS)
        {
            String value = params.get(key);
            if(value != null)
            {
                editor.putString(key, value);
            }
        }

        editor.commit();
    }


    public static Map<String, String> retrieveReferralParams(Context context)
    {
        HashMap<String, String> params = new HashMap<String, String>();
        SharedPreferences storage = context.getSharedPreferences(ReferralReceiver.PREFS_FILE_NAME, Context.MODE_PRIVATE);

        for(String key : ReferralReceiver.EXPECTED_PARAMETERS)
        {
            String value = storage.getString(key, null);
            if(value != null)
            {
                params.put(key, value);
            }
        }
        return params;
    }
}

referraltext.setText(ReferralReceiver.retrieveReferralParams(this.getApplicationContext()).toString());

am broadcast -a com.android.vending.INSTALL_REFERRER -n com.locateme.android/.ReferralReceiver --es "referrer" "utm_source=tooyoou&utm_medium=banner&utm_term=foursquare&utm_content=foursquare-tooyoou&utm_campaign=foursquare-android"

if (intent.getAction().equals(Intent.ACION_PACKAGE_ADDED))
    String appName = intent.getData().toString();