Android Activity Task in foreground

Question

I have 3 activity tasks A-B-C

<activity android:name=".LoginActivity"
    android:label="@string/app_name"
    android:noHistory="true">
    <intent-filter>
        <action android:name="android.intent.action.MAIN"/>
        <category android:name="android.intent.category.LAUNCHER"/>
    </intent-filter>
</activity>
<activity android:name=".DashboardActivity"
              android:label="@string/app_name" >
</activity>
<activity android:name=".CreateNewPolygonActivity"
              android:label="@string/app_name"
              android:launchMode="singleTask"
              android:alwaysRetainTaskState="true"
              android:configChanges="orientation|keyboard|keyboardHidden">
</activity>
<service android:name=".services.RecordCircuitService"
             android:enabled="true" >
</service>

And I have a Service with GPS using LocationManager.

My application has this logic:

1. On launcher icon clicked - > start login activity
2. After login - > login activity is finish(); and start dashboardActivity
3. In the dashboard I start CreateNewPolygonActivity and start the Service with GPS
4. Press HOME (this is reorganize RecordActivity to foreground)

after I have some mistakes work

1. open CreateNewPolygonActivity with onCreate
2. open DashboardActivity

I think I have a problem with my task organization.

Answer 1

You won't achieve the desired result by setting launchMode="singleTask" for your activity. Android won't create a separate task for this because you've not set the taskAffinity. In any case, you don't want to do this by using launchMode="singleTask" because this causes more problems than it solves. This launch mode is intended for HOME-screen replacements only!

Remove launchMode="singleTask"`` fromCreateNewPolygonActivity`

Also, you should remove android:noHistory="true" from your login activity. This isn't necessary either. Since you've already finished the login activity when the user starts the DashboardActivity, when he presses the BACK button, it won't return to the login activity (which I assume is what you wanted).

Once you've done these things, please tell us what is still broken.