Scenario : I have a simple to-do app where In the main activity I have a fragment that takes a list of to-dos from the user. I set an alarm for a fixed time in the future (in my case every 2 min ONLY for testing. The AlarmReceiver class launches an AlarmActivity which shows the list of to-dos as checkboxes for the user to mark as done.
When the alarm comes up and shows the list, I have a "Submit" button to mark all the checked items as 'done' in the local db.
Problem: This AlarmActivity disappears on click of submit since I'm calling finish on it. But when I launch the app from the icon, the AlarmActivity is shown instead of the main activity.
AlarmReceiver code :
final Intent intent1 = new Intent(context, CheckListAlarmActivity.class);
intent1.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS | Intent.FLAG_ACTIVITY_NO_HISTORY);
context.startActivity(intent1);
AndroidManifest.xml
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity
android:name=".MainActivity"
android:noHistory="true"
android:clearTaskOnLaunch="true"
android:screenOrientation="portrait">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".AlarmActivity"
android:alwaysRetainTaskState="false"
android:clearTaskOnLaunch="true"
android:showOnLockScreen="true"
android:screenOrientation="sensorPortrait"
android:noHistory="true"/>
<receiver android:name=".AlarmReceiver" />
</application>
I added the android:clearTaskOnLaunch="true" and that seems to do the trick sometimes but not always.
And in the background when I put the loggers, it shows that every time I launch using the app icon it calls the onCreate of the MainActivity and then immediately calls the onCreate of the AlarmActivity.
I have tried looking for all kinds of solutions and tried setting a bunch of flags to the Intent. Nothing seems to do the trick convincingly.
It seems like a simple problem but I am not able to find the solution. Any help/guidance would be appreciated.
