Android: Including multiple Java Packages to Manifest

Question

The app I am developing has many activities organized into seven java packages. Originally I wrote all the coding and stuff for each group of activities in a java package as

Answer 1

The problem may persist even if we change the manifest file. to avoid it we must Add an import com.example.R; in all our classes.

example: MainActivity.class in package2

pakage com.example.package2.Activity2
import com.example.R;

(TestActivity.class in package1)

pakage com.example.package1.Activity1
import com.example.R;