Android Question version problem

You don't need to do anything special. It should be supported by Android 2.2+. If you have used a library that explicitly states a different minimum version then the minimum version might be higher.

i cant understand eral....

ibs06t said:

i cant understand eral....

Click to expand...

Your application is supported by all versions that you declare in your manifest (minSdkVersion):
<uses-sdk android:minSdkVersion="4" android:targetSdkVersion="17"/>

There are some libraries that works only with certain minSdkVersion (for example Firebase Database Realtime). You don't need to do anything to support all Android Versions, only be sure that you declare right minSdkVersion in order to avoid issues with libraries that you use