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    <p>The approach differs a bit if you have multiple Activities within your app, but if you are only talking about a single Activity then the Activity itself won't show anything until the onResume() is called. Prior to that, the only thing that will be displayed is the background image of the Application/Activity. Setting a background image for your Activity can greatly increase the perceived startup speed, since they will display immediately. Romain Guy discusses background images a bit here: <a href="http://www.curious-creature.org/2009/03/04/speed-up-your-android-ui/" rel="nofollow">http://www.curious-creature.org/2009/03/04/speed-up-your-android-ui/</a>.</p> <p>If your app has a lot of startup crunching to do then you should do that work on a separate thread and let the onCreate(), onStart(), onResume() proceed quickly. Those methods should try to do as little as possible so the Activity appears to the user as soon as possible. If you want a loading or splash screen to be visible while it loads there different approaches. For the sake of starting simple, let's say you just want to have a loading screen with no animation, just an image. One way to do this would be to set the Activities background image to the loading screen image via XML. In the onCreate() start a thread with your loading processes, so it doesn't have to wait for it to finish in order to continue starting the Activity. In the XML layout, set the root ViewGroup for your layout to have a visibility of gone. This way your views won't appear and it will just show the background loading image. It will also allow these views to be inflated and setup.</p> <p>Then, when the processes are finished, set the visibility of the ViewGroup to visible to have it appear to the user and if you want, you can change the background image too.</p> <p>If you don't want to go the splash screen route, still make sure no long running methods are happening in the start up methods, get those onto another thread. You can show your Activity right away and just put up a loading animation if need be.</p> <p>Obviously there are a ton of approaches and it all depends on what you really need. Hope that helps in someway.</p>
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    1. COthank you for the detailed reply. i am bad at handling threads and have no idea how to do it. the splash screen idea sounds good but i would need to learn how threads work. would you be aware of any tutorials that explain the same. thanks
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    2. COProbably, the easiest route to go is using AsyncTask. If you look that up there are some tutorials and basic documentation about it. It allows you to easily say "Go do A, and when you are done do B". The other methods are looking into Threads, Runnables and Handlers and also Executors. AsyncTask is a easy way to start though.
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    3. COhmm..this makes sense...i gotta learn this...asynctask..
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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