Android activity launch from search -

my activities:

a - main activity (kind of login screen), finish() on going other activity

b - user content

c = other user content

when go > b > c, press home, launch app launcher, see c stack restored b > c (top) , no problem here

when go > b > c, press home, launch app google search bar on home screen, see a, stack b > c > (top).

question why happening, , how can fix it?

snippet manifest:

<activity   android:name="activitya"   android:label="@string/app_name"   android:launchmode="standard"   android:windowsoftinputmode="statehidden|adjustpan" >   <intent-filter>     <action android:name="android.intent.action.main" />     <category android:name="android.intent.category.launcher" />     </intent-filter>   </activity>   <activity      android:name="activityb"     android:label="@string/b_screen_title" >   </activity>   <activity     android:name="activityc"     android:label="@string/c_screen_title"     android:windowsoftinputmode="statevisible|adjustresize" >   </activity> 

when use google search bar , select app, launches root activity (in case activitya). different launcher when launches application (if application running brings existing task foreground). simulate behaviour in app can add following code activitya.oncreate():

@override protected void oncreate(bundle savedinstancestate) {     super.oncreate();     // if not root of task, means activity has been launched     //  mechanism (ie: google search)     if (!istaskroot()) {         // isn't root of task, go away quietly , drop user         //  application wherever left         finish();         return;     }     // ...the rest of oncreate() goes here... }