As you can see in the graph of the platform versions here , it is recommended to use the Android 2.1 or 2.2 SDK to cover almost all Android devices on the market.
It seems to me that you do not need the / ARM / Sources samples, although if you need to use the Google API (for example, the Google Maps API), you need to use the versions of the Google API 2.1 or 2.2.
dmaxi source share