Can Android 4.0 apps work with Android 2.0 and Android 3.0 devices?

Question

I plan to create an application for users to view their game statistics, which I am currently doing, but my question is similar to the title. I'm not sure if I can use apps with Android 3.0, Android 2.0 or lower? If not, how would I get around this? I just can not use the new API functions, such as NFC, etc.? In general, if I start development with the Android 4.0 SDK, will all Android phones be able to use my application?

Answer 1

The compatibility library (which we just call in the support library now) does not use special magic to remove this. You can check Build.VERSION.SDK_INTat run time and use the loadloader functions to access new functions when they are available. Here are some examples: http://android-developers.blogspot.com/2010/07/how-to-have-your-cupcake-and-eat-it-too.html

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Answer 2

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Answer 3

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