The lower the number the more devices are supported but certain features won’t work as they require a certain API Level. You have to have balance up the features desired and intended target market.

ok thx for the answer

Your welcome :D

I have an other question, I don’t understand the difference between project android and project android-studio.

project-android is to be used with Eclipse essentially and project-android-studio is an android project to be used with only Android Studio.

I hope this helps explain the difference.

Ok that’s what I thought, thx

Your welcome.

If you have anymore questions feel free to post them