AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="org.literacyapp.calculator"
    android:installLocation="auto">

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

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher_calculator"
        android:label="@string/app_name">
        <uses-library
            android:name="com.sec.android.app.multiwindow"
            android:required="false" />

        <meta-data
            android:name="com.sec.android.support.multiwindow"
            android:value="true" />
        <meta-data
            android:name="com.sec.android.multiwindow.DEFAULT_SIZE_W"
            android:resource="@dimen/app_defaultsize_w" />
        <meta-data
            android:name="com.sec.android.multiwindow.DEFAULT_SIZE_H"
            android:resource="@dimen/app_defaultsize_h" />
        <meta-data
            android:name="com.sec.android.multiwindow.MINIMUM_SIZE_W"
            android:resource="@dimen/app_minimumsize_w" />
        <meta-data
            android:name="com.sec.android.multiwindow.MINIMUM_SIZE_H"
            android:resource="@dimen/app_minimumsize_h" />

        <activity
            android:name="com.android.calculator2.Calculator"
            android:exported="true"
            android:theme="@style/Theme.Calculator"
            android:windowSoftInputMode="stateAlwaysHidden">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.DEFAULT" />
                <category android:name="android.intent.category.APP_CALCULATOR" />
                <category android:name="android.intent.category.LAUNCHER" />
                <category android:name="android.intent.category.MULTIWINDOW_LAUNCHER" />
            </intent-filter>
        </activity>

        <!-- Receiver for the widget -->
        <receiver android:name="com.android.calculator2.widget.CalculatorWidget">
            <intent-filter>
                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
            </intent-filter>
            <meta-data
                android:name="android.appwidget.provider"
                android:resource="@xml/calculator_widget_info" />
        </receiver>

        <!-- Activities and services for floating calc -->
        <activity
            android:name="com.xlythe.floatingview.FloatingActivity"
            android:clearTaskOnLaunch="true"
            android:excludeFromRecents="true"
            android:finishOnTaskLaunch="true"
            android:label="@string/app_name"
            android:launchMode="singleInstance"
            android:noHistory="true"
            android:theme="@style/TransparentBackground" />
        <activity
            android:name="com.android.calculator2.floating.FloatingCalculatorCreateShortCutActivity"
            android:icon="@drawable/ic_launcher_floating"
            android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.CREATE_SHORTCUT" />
                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
        <activity
            android:name="com.android.calculator2.floating.FloatingCalculatorOpenShortCutActivity"
            android:clearTaskOnLaunch="true"
            android:excludeFromRecents="true"
            android:exported="true"
            android:finishOnTaskLaunch="true"
            android:label="@string/app_name"
            android:launchMode="singleInstance"
            android:noHistory="false"
            android:theme="@style/TransparentBackground" />
        <service android:name=".floating.FloatingCalculator">
            <intent-filter>
                <action android:name="android.intent.action.CONFIGURATION_CHANGED" />
            </intent-filter>
        </service>
    </application>
</manifest>