title: Unable to find Default Activity Class Name
body: <p>I am working the process of linking facebook login to my android application. In some tutorial I was asked to register my app with Facebook Developers website where I did everything but I couldnt find "Default Activity Class Name" in my Android Studio I have provided this below manifest file </p>
  
  <pre><code>    &lt;?xml version="1.0" encoding="utf-8"?&gt;
      &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="in.evago.evago"&gt;
  
      &lt;uses-permission android:name="android.permission.INTERNET" /&gt;
  
      &lt;application
          android:allowBackup="true"
          android:icon="@mipmap/ic_launcher"
          android:label="@string/app_name"
          android:supportsRtl="true"
          android:theme="@style/AppTheme"&gt;
          &lt;meta-data
              android:name="com.facebook.sdk.ApplicationId"
              android:value="@string/facebook_app_id" /&gt;
  
          &lt;!-- Front Page --&gt;
          &lt;activity
              android:name=".Frontpage"
              android:label="@string/app_name"
              android:theme="@style/AppTheme.NoActionBar"&gt;
              &lt;intent-filter&gt;
                  &lt;action android:name="android.intent.action.MAIN" /&gt;
                  &lt;category android:name="android.intent.category.LAUNCHER" /&gt;
              &lt;/intent-filter&gt;
  
              &lt;meta-data
                  android:name="android.app.searchable"
                  android:resource="@xml/searchable" /&gt;
          &lt;/activity&gt;
          &lt;!-- Search results activity --&gt;
  
  
  &lt;activity
          android:name=".SearchResultsActivity"
          android:label="@string/title_activity_searchable"
          android:launchMode="singleTop"
          android:theme="@style/AppTheme.NoActionBar"&gt;
          &lt;intent-filter&gt;
              &lt;action android:name="android.intent.action.SEARCH" /&gt;
          &lt;/intent-filter&gt;
      &lt;/activity&gt;
      &lt;!-- Search results activity Ends --&gt;
  
  &lt;/application&gt;
  </code></pre>
  
  <p>Please help me in locating the "Default Activity Class Name"</p>