Hey
The problem is that your reference b2 is null and you get a
NullPointerException when trying to register the OnClickListener on
it. This happens because b2 does not yet exist when you ask for it by
calling findViewById(R.id.button_id2), for only the contents of your
main.xml file is already l
I think you can get all answers and understand what Android OS is on the
Google site.
Android is a operating system which is meant for mobile phones. So
theoretically, if your hardware specifications match Android OS
requirements, then you can run Android on your PDA. In reality you might
have to '
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