Question

I am trying to run 2 activities on 2 different processes. The purpose of doing this is that my app is displaying my product which adds homescreen icons of my subproducts. Whenever i am using the main product, i want it to be displayed on the main process while my sub product to be displayed in a different activity on another process. This is so that when exiting a subproduct, resuming my main product can be fast because its already running in the background.

Reading through this:
http://developer.android.com/guide/topics/manifest/activity-element.html#proc

They state that you can separate activities into different processes using android:process attribute. Here’s what i’ve done:

<application android:icon="@drawable/icon" android:label="@string/app_name" android:debuggable="true" android:process="com.mypackage.myapp">
    <activity android:name=".ProductActivity"
              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" />
             <category android:name="android.intent.category.DEFAULT"/>
             <category android:name="android.intent.category.BROWSABLE"/>
         </intent-filter>
    </activity>
    <activity android:name=".SubProductActivity"
              android:label="@string/app_name" 
              android:configChanges="orientation|keyboardHidden"
              android:process=":com.mypackage.myapp.newprocname">
        <intent-filter>
             <action android:name="android.intent.action.MAIN" />
             <category android:name="android.intent.category.LAUNCHER" />
             <category android:name="android.intent.category.DEFAULT"/>
             <category android:name="android.intent.category.BROWSABLE"/>
         </intent-filter>
    </activity>
    <activity android:name="com.phonegap.DroidGap" android:label="@string/app_name" android:configChanges="orientation|keyboardHidden"> <intent-filter> </intent-filter> </activity>
</application>

However, logging the current PID, both activites are actually running on the same process…

What can be the problem?

Answer 1

After setting the intent of the subactivity to android.intent.category.LAUNCHER (as you correctly did), set a separate TaskAffinity string for the second activity.
E.g. in the second activity line in the manifest make sure you have something similar to

<activity android:name=".SubProductActivity" android:label="SubActivity"
android:taskAffinity="com.domain.project.SubActivityName">

This tells Android to run the SubProductActivity in a separate process.

Refer also to https://stackoverflow.com/a/3270422/978329