When using taskAffinity to have multiple Activities in the Launcher for the same app, if one is active the other needs to be clicked twice

Question

Scenario: Two Activities being shown in launcher for one app, they have different taskAffinities because I was getting the problem of when I open one, hit home, open the other, the first one would be opened. So, I added taskAffinity in the AndroidManifest for the proper tasks.

The problem I'm getting is that if I open one, hit home, hit the second one, it will open the proper task/Activity, BUT I have to click on the icon twice in order for it to open and get, this ONLY happens with the activity that specifies a taskAffinity, the other one opens just fine on the first click every time.

731-1337/? W/InputMethodManagerService﹕ Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@4e640b6 attribute=null, token = android.os.BinderProxy@3edac0ca

Here is the manifest

<activity
        android:name=".firstActivity"
        android:theme="@android:style/Theme.Holo.Light.NoActionBar">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
</activity>

<activity
            android:name=".secondActivity"
            android:label="@string/second_activity"
            android:icon="@drawable/ic_second_activity"
            android:taskAffinity="secondTask"
            android:theme="@android:style/Theme.Holo.Light.NoActionBar">

        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
</activity>
<activity android:name=".thirdActivity"
              android:label="@string/second_activity"
              android:taskAffinity="secondTask"
              android:theme="@android:style/Theme.Holo.Light.NoActionBar"/>

Shawn Hazen · Answer 1 · 2015-04-21T19:24:04.433

I fixed this by adding this to the thirdActivty which was being called by secondActivity immediately on launch.

              android:launchMode="singleTask"

So it ended up looking like

<activity android:name=".thirdActivity"
          android:label="@string/second_activity"
          android:taskAffinity="secondTask"
          android:launchMode="singleTask"
          android:theme="@android:style/Theme.Holo.Light.NoActionBar"/>

Hope someone finds this solution helpful.

When using taskAffinity to have multiple Activities in the Launcher for the same app, if one is active the other needs to be clicked twice

1 Answers1