app/src/main/AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
	package="com.artifex.mupdf.viewer.app"
	android:installLocation="auto"
	>
	<uses-permission
		android:name="android.permission.READ_EXTERNAL_STORAGE"
		/>
	<application
		android:label="MuPDF viewer"
		android:icon="@drawable/ic_mupdf"
		>
		<activity
			android:name=".LibraryActivity"
			android:configChanges="orientation|screenSize|keyboardHidden"
			>
			<intent-filter>
				<action android:name="android.intent.action.MAIN" />
				<category android:name="android.intent.category.LAUNCHER" />
			</intent-filter>
		</activity>
	</application>
</manifest>