AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest
  package="aoeu.bustler"
  xmlns:android="http://schemas.android.com/apk/res/android"
>
  <uses-sdk
    android:minSdkVersion="26"
    android:targetSdkVersion="26"
  />

  <application
    android:allowBackup="true"
    android:label="@string/app_name"
    android:supportsRtl="true"
    android:theme="@style/AppTheme"
   >
    <activity
      android:name=".Main"
      android:configChanges="orientation|keyboardHidden|screenSize"
      android:label="@string/app_name"
      android:theme="@style/AppTheme"
      android:launchMode="singleInstance"
    >
      <intent-filter>
        <action android:name="android.intent.action.MAIN"/>
        <category android:name="android.intent.category.HOME" />
        <category android:name="android.intent.category.DEFAULT" />
        <category android:name="android.intent.category.LAUNCHER"/>
      </intent-filter>
    </activity>
  </application>
  <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
  <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
</manifest>