google play - My android app can download but doesnt appear in my downloaded apps -

my new android app can download playstore doesn't appear in downloaded apps. when download play store there option 'open' app aswell 'uninstall', uninstall button visible. (http://i.imgur.com/jntvjq2.png notice missing open button)

here's manifest, there no errors during tests ran.

      <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android"     package="com.jackattackapps.bigl"     android:versioncode="1"     android:versionname="1.0" >      <uses-sdk         android:minsdkversion="8"         android:targetsdkversion="18" />     <uses-permission android:name="android.permission.access_network_state"/>     <uses-permission android:name="android.permission.internet"/>      <application         android:allowbackup="true"         android:icon="@drawable/iconimage"         android:label="@string/app_name"         android:theme="@style/theme.sherlock" >          <activity             android:name="com.jackattackapps.bigl.mainactivity"             android:label="@string/app_name" >             <intent-filter>                 <action android:name="android.intent.action.mainactivity" />                  <category android:name="android.intent.category.default" />             </intent-filter>         </activity>           <activity             android:name="com.jackattackapps.bigl.splashscreen"             android:label="@string/app_name" >             <intent-filter>                 <action android:name="android.intent.action.splashscreen" />                  <category android:name="android.intent.category.launcher" />             </intent-filter>         </activity>          <activity android:name="com.google.ads.adactivity"                       android:configchanges="keyboard|keyboardhidden|orientation|screenlayout|uimode|screensize|smallestscreensize"/>        </application>  </manifest> 

and activity supposed load on start of application.

package com.jackattackapps.bigl;  import android.app.activity; import android.content.intent; import android.media.mediaplayer; import android.os.bundle;  public class splashscreen extends activity {  @override protected void oncreate(bundle savedinstancestate) {      // todo auto-generated method stub      super.oncreate(savedinstancestate);      setcontentview(r.layout.splashscreen);     thread timer = new thread(){         public void run(){             try{                  mediaplayer oursong = mediaplayer.create(splashscreen.this, r.raw.splashsound);                 oursong.start();                 sleep(2300);              }             catch (interruptedexception e){                 e.printstacktrace();              } {                  intent openmainactivity = new intent("android.intent.action.mainactivity");                 startactivity(openmainactivity);              }         }     };     timer.start(); }  @override protected void onpause() {     // todo auto-generated method stub     super.onpause();     finish();  } 

}

if more information needed comment, appreciated greatly.

your launcher activity should have intent filter

<intent-filter>     <action android:name="android.intent.action.main"/>     <category android:name="android.intent.category.launcher"/> </intent-filter>