samples/ndk-treasurehunt/src/main/AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.google.vr.ndk.samples.treasurehunt"
    android:versionCode="180313033"
    android:versionName="1.140.0">

  <!-- The GVR SDK requires API 19+ and OpenGL ES 2+. -->
  <uses-sdk android:minSdkVersion="19" android:targetSdkVersion="24" />
  <uses-feature android:glEsVersion="0x00020000" android:required="true" />

  <!-- Required for vibration feedback when the trigger action is performed. -->
  <uses-permission android:name="android.permission.VIBRATE"/>
  <!-- Required to read the paired viewer's distortion parameters. -->
  <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>

  <!-- Make accelerometer and gyroscope hard requirements for good head tracking. -->
  <uses-feature android:name="android.hardware.sensor.accelerometer" android:required="true"/>
  <uses-feature android:name="android.hardware.sensor.gyroscope" android:required="true"/>

  <!-- Indicates use of Android's VR-mode, available only on Android N+. -->
  <uses-feature android:name="android.software.vr.mode" android:required="false"/>
  <!-- Indicates use of VR features that are available only on Daydream-ready devices. -->
  <uses-feature android:name="android.hardware.vr.high_performance" android:required="false"/>

    <!-- Indicates support for 6DoF head tracking (version 1). This is required to receive 6DoF
         poses through the new 6DoF head tracking API, and will implicitly enable 6DoF poses through
         the (legacy) 3DoF head tracking API. -->
  <uses-feature android:name="android.hardware.vr.headtracking"
      android:version="1"
      android:required="false" />

  <application
      android:allowBackup="true"
      android:label="MainActivity"
      android:theme="@style/VrActivityTheme">
    <activity
        android:name=".MainActivity"
        android:label="@string/app_name"
        android:screenOrientation="landscape"
        android:configChanges="orientation|keyboardHidden|screenSize|uiMode|navigation"
        android:enableVrMode="@string/gvr_vr_mode_component"
        android:resizeableActivity="false">

      <!-- The VR icon to be used in Daydream Home comes in two parts:
           a foreground icon and a background icon.  -->
      <meta-data android:name="com.google.android.vr.icon"
                 android:resource="@drawable/vr_icon" />
      <meta-data android:name="com.google.android.vr.icon_background"
                 android:resource="@drawable/vr_icon_background" />

      <!-- Intent filter that enables this app to be launched from the
           Daydream Home menu. -->
      <intent-filter>
          <action android:name="android.intent.action.MAIN" />
          <category android:name="android.intent.category.LAUNCHER" />
          <category android:name="com.google.intent.category.DAYDREAM"/>
      </intent-filter>

      <!-- Intent filter that enables this app to be launched from the
           Cardboard app and from the traditional launcher. -->
      <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
        <category android:name="com.google.intent.category.CARDBOARD" />
      </intent-filter>
    </activity>
  </application>
</manifest>