AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.android.calculator2"
    android:versionName="@string/application_version">

    <original-package android:name="com.android.calculator2" />

    <application android:label="@string/app_name" android:icon="@mipmap/ic_launcher_calculator">
        <activity android:name=".Calculator" 
                  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" />
            </intent-filter>
        </activity>
        <activity-alias
            android:label="@string/app_name"
            android:icon="@mipmap/ic_launcher_calculator"
            android:name=".Calculator-Dark"
            android:enabled="true"
            android:targetActivity=".Calculator">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity-alias>
        <activity-alias
            android:label="@string/app_name"
            android:icon="@mipmap/ic_launcher_calculator_light"
            android:name=".Calculator-Light"
            android:enabled="false"
            android:targetActivity=".Calculator">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity-alias>
        <activity android:name=".Preferences" android:theme="@style/Theme.Settings.Calculator" android:label="@string/settings" />
        <receiver android:name=".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>
    </application>
</manifest>