title: App is installed and has two icons
body: <p>I made a android app and it worked very well, but there are two icons in my device screen. I think it could be a AndroidManifest problem. Any idea what it could be?</p>
  
  <p>This my AndroidManifest.xml:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
  package="pk.aeh.ideos.taa"
  android:versionCode="1"
  android:versionName="1.0" &gt;
  
  &lt;application
      android:icon="@drawable/icon"
      android:label="@string/app_name"
      android:theme="@android:style/Theme.NoTitleBar" &gt;
             &lt;activity
          android:name=".Ghinho_congviecActivity"
          android:label="@string/app_name" &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;/activity&gt;
      &lt;activity android:name="Nhap_congviecActivity"&gt;&lt;/activity&gt;
      &lt;activity android:name="Sua_congviecActivity"&gt;&lt;/activity&gt;
      &lt;activity
          android:name=".Quizzes"
          android:launchMode="singleTask"&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;/activity&gt;
      &lt;activity android:name=".PlayGame" /&gt;
      &lt;activity android:name=".Result" /&gt;
  
  &lt;/application&gt;
  
  &lt;uses-permission android:name="android.permission.INTERNET" /&gt;
  &lt;uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /&gt;
  </code></pre>
  
  <p></p>