How do you close apps running in the background of an iPhone?

Q. I just got the iPhone 4S and I had an android and there was this thing called advanced task manager/killer and it would close apps running in the background. How do I do this on the iPhone? Thanks :) Oh, and is there any other way to help save battery life? Other than dimming the screen and turning of WIFI?

A. Double click the home button. Press and hold down on the apps that show up on the bottom of the screen. They will shake and a minus sign will show up. Press the minus sign, and it will kill the ap.

What programming languages can be used to devolp android apps?
Q. i want to make android apps, but i want to know what programming languages are compatible with android, like is html compatible? or can it run regular java or mobile?

A. The language primarily used for Android is Java. HTML is not a language. Android is a distribution of Linux and C/C++ is usually used for Linux and it is poosible to do Android development using C++. It is also possible to use C# for Android. There are other languages that could possibly be used.

You can develop applications using HTML and JavaScript.

I suggest starting using Java and the Android SDK. I don't kno what book is good for learning. I am reading Pro Android (ISBN-13: 978-1-4302-1596-7) but you might need a separte book for Java. I am not sure if I recommend Pro Android; it might be too advnaced for you.

Could anyone help me to get Android apps on my Blackberry PlayBook?
Q. I got a PlayBook a month ago or so. And while the browser is pretty impressive for a tablet I'm hugely disappointed in the blackberry "app world" that barely has any apps worth getting and they cost like 3 dollars. I have heard you can run android apps going through some process like jailbreaking. I hav. No idea how to, help!

A. http://www.youtube.com/watch?feature=player_embedded&v=BA1GS44yjDQ

watch to this video and you will teach how to get Android Apps on your Blackberry Playbook.




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