Launch Mode Does Not Work

Question

I have defined launch mode in my manifest file to keep only a single activity on the backstack but unfortunately, it does not fix the back navigation problem. That is the user has to click back navigation button repeatedly to exit the application. Here is my manifest configuration.

<?xml version="1.0" encoding="utf-8"?>

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_action_launcher"
    android:label="@string/app_name"
    android:roundIcon="@drawable/ic_action_launcher"
    android:supportsRtl="true"
    android:theme="@style/AppTheme">
    <activity android:name=".MainActivity"
        android:launchMode="singleTop"/>
    <activity android:name=".DataViewActivity"
        android:launchMode="singleTop"/>
    <activity android:name=".FormsViewActivity"
        android:launchMode="singleTop"/>
    <activity android:name=".ProfileViewActivity"
        android:launchMode="singleTop"/>
    <activity android:name=".NotificationsActivity"
        android:launchMode="singleTop"/>
    <activity android:name=".NotificationViewActivity"
        android:launchMode="singleTop"/>
    <activity android:name=".LoginActivity"
        android:launchMode="singleTop">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity android:name=".InitialSetupActivity"
        android:launchMode="singleTop">
    </activity>
</application>

<uses-permission android:name="android.permission.INTERNET"/>

Thanks in advance

Answer 1

Use singleTask or singleInstance instead of singleTop

In Android Docs:

standard and singleTop

An activity with the "standard" or "singleTop" launch mode can be instantiated multiple times. The instances can belong to any task and can be located anywhere in the activity stack. Typically, they're launched into the task that called startActivity() (unless the Intent object contains a FLAG_ACTIVITY_NEW_TASK instruction, in which case a different task is chosen — see the taskAffinity attribute)

singleTask and singleInstance

In contrast, "singleTask" and "singleInstance" activities can only begin a task. They are always at the root of the activity stack. Moreover, the device can hold only one instance of the activity at a time — only one such task.

Source: https://developer.android.com/guide/topics/manifest/activity-element.html