Finding the "Android class name" in "AndroidManifest.xml" generated by Unity3D

Question

When configuring a "Android Native App" in a Facebook app, they require the Android Class Name. If you created the Android APK from Unity3D, how do you know what class to use?

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:installLocation="preferExternal" package="--------------" android:versionName="1.02" android:versionCode="8">
  <supports-screens android:smallScreens="true" android:normalScreens="true" android:largeScreens="true" android:xlargeScreens="true" android:anyDensity="true" />
  <application android:icon="@drawable/app_icon" android:label="@string/app_name" android:debuggable="true">
    <activity android:name="com.unity3d.player.UnityPlayerProxyActivity" android:label="@string/app_name" android:configChanges="fontScale|keyboard|keyboardHidden|locale|mnc|mcc|navigation|orientation|screenLayout|screenSize|smallestScreenSize|uiMode|touchscreen" android:screenOrientation="landscape">
      <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
      </intent-filter>
    </activity>
    <activity android:name="com.unity3d.player.UnityPlayerActivity" android:label="@string/app_name" android:configChanges="fontScale|keyboard|keyboardHidden|locale|mnc|mcc|navigation|orientation|screenLayout|screenSize|smallestScreenSize|uiMode|touchscreen" android:screenOrientation="landscape">
    </activity>
    <activity android:name="com.unity3d.player.UnityPlayerNativeActivity" android:label="@string/app_name" android:configChanges="fontScale|keyboard|keyboardHidden|locale|mnc|mcc|navigation|orientation|screenLayout|screenSize|smallestScreenSize|uiMode|touchscreen" android:screenOrientation="landscape">
      <meta-data android:name="android.app.lib_name" android:value="unity" />
      <meta-data android:name="unityplayer.ForwardNativeEventsToDalvik" android:value="false" />
    </activity>
    <activity android:name="com.unity3d.player.VideoPlayer" android:label="@string/app_name" android:configChanges="fontScale|keyboard|keyboardHidden|locale|mnc|mcc|navigation|orientation|screenLayout|screenSize|smallestScreenSize|uiMode|touchscreen" android:screenOrientation="landscape">
    </activity>
    <!-- ACTIVITIES -->
    <activity android:name="com.prime31.FacebookProxyActivity" />
    <!-- META-DATA -->
  </application>
  <!-- PERMISSIONS -->
  <uses-permission android:name="android.permission.INTERNET" />
  <uses-feature android:glEsVersion="0x00020000" />
  <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
  <uses-feature android:name="android.hardware.sensor.accelerometer" />
  <uses-feature android:name="android.hardware.touchscreen" />
  <uses-feature android:name="android.hardware.touchscreen.multitouch" android:required="false" />
  <uses-feature android:name="android.hardware.touchscreen.multitouch.distinct" android:required="false" />
  <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="16" />
</manifest>

Answer 1

This field should be your main activity (associated with MAIN and LAUNCHER). In this case, I think it would be com.unity3d.player.UnityPlayerProxyActivity.

This is mainly necessary if you use native deep links (so the FB app can create an intent that directly calls your activity). In that respect, any publicly accessible Activity in your app will do.

Answer 2

The main activity's tag should contain an intent-filter tag with the action android.intent.action.MAIN and the category android.intent.category.LAUNCHER.

Description of the intent-filter tag (from documentation):

Specifies the types of intents that an activity, service, or broadcast receiver can respond to. An intent filter declares the capabilities of its parent component — what an activity or service can do and what types of broadcasts a receiver can handle. It opens the component to receiving intents of the advertised type, while filtering out those that are not meaningful for the component. Most of the contents of the filter are described by its <action>, <category>, and <data> subelements.

For a more detailed discussion of filters, see the separate Intents and Intent Filters document, as well as the Intents Filters section in the introduction.

The main activity of an Android application has an intent-filter with the category LAUNCHER which basically tells that the activity can "launch the app" (in other words, that it is the launcher/entry).

The activity tag should look something like this:

<activity android:name="ActivityClassName" android:label="Activity title">
    <!-- The intent filter -->
    <intent-filter>
        <!-- The action -->
        <action android:name="android.intent.action.MAIN"/>
        <!-- The category -->
        <category android:name="android.intent.category.LAUNCHER"/>
    </intent-filter>
</activity>

By looking at your AndroidManifest.xml, you can conclude that the main Activity of your app is the com.unity3d.player.UnityPlayerProxyActivity Activity, because it contains an intent-filter matching those criterias.

Good luck with your game!