Manage Splash screen activity and background tasks on android -

i have 2 activities. 1 splash , other main activity loads fragments pages. splash no background tasks, sit pretty , transition main activity following background tasks.

1. set admob ads
2. request data file server
3. decript encryption key
4. loads images disk display
5. set google leader-board or sign in if user not sigh in.

my question how delegate of these tasks splash screen? , how pass these complex objects between activities (can use static variables)

at moment contemplating ditch splash activity , use main activity show splash image in that. main activity layout has banner adds not sure how cover entire screen image.

please help!

my main activity

 <relativelayout xmlns:android="http://schemas.android.com/apk/res/android"         android:layout_width="match_parent"         android:layout_height="match_parent"         android:orientation="vertical" >          <linearlayout             android:id="@+id/fragment"             android:layout_width="fill_parent"             android:layout_height="fill_parent"              android:gravity="center"              android:orientation="vertical"             android:layout_above="@+id/fragment_ad"/>           <fragment             android:id="@+id/fragment_ad"             android:layout_width="match_parent"             android:layout_height="wrap_content"             android:layout_alignparentbottom="true"             class="com.controllers.adfragment" />      </relativelayout>   public class splashactivity extends activity {      /** duration of wait **/     private final int splash_display_length = 2000;       string data = "";     /** called when activity first created. */     @override     public void oncreate(bundle icicle) {         super.oncreate(icicle);          this.requestwindowfeature(window.feature_no_title);         this.getwindow().setflags(windowmanager.layoutparams.flag_fullscreen,                 windowmanager.layoutparams.flag_fullscreen);          setcontentview(r.layout.splash);           data = getintent().getdatastring();         /* new handler start menu-activity           * , close splash-screen after seconds.*/         new handler().postdelayed(new runnable(){             @override             public void run() {                 /* create intent start menu-activity. */                  intent mainintent = new intent(splashactivity.this,mainactivity.class);                 if(data != "")                     mainintent.putextra(utils.challenge_data_code, data);                 splashactivity.this.startactivity(mainintent);                 splashactivity.this.finish();             }         }, splash_display_length);       } 

i think should split workload this:

1. data , work must have before user can use app should executed in splash screen , off-course should wait finish before continuing main activity. don't want let user wait if there's no reason. there few ways can transfer data main activity:

   a. use intent extras when possible. if there custom objects, can serialize them using gson example, , deserialize them in main activity.

   b. save data in application class/sharedpreferences

2. you can start getting data need later in splash using thread, don't let user wait when there isn't reason.