From this question :
How can I use filter for emma when building Android test with ant?
I know emma can use a filter by adding the following lines to my ant.properties of the targeted project, not the test project,
emma.filter=-com.your.excluded.package.*
but it seems it doesn't work properly if my target project is a library project.
My workspace looks like this:
projectlib1 : lib project using lib2
projectlib1/tests : unit tests for lib1
projectlib2 : lib project using lib3
projectlib2/tests : unit tests for lib2
projectlib3 : stand alone lib
When I run coverage for lib1 I also get coverage files for lib2 and lib3 which I do not want. Where should I add the emma.filter? I tried putting it at the root of each of those projects but it did not work so far.
any suggestion welcome! thank you
Just had the same problem, I tried the solution of the thread you mention and I did not work. I also tried to add it directly in the build.xml file, did not work either.
Although I managed to make it work by adding the -Demma.filter="-your.app.package" on the ant command line:
ant -Demma.filter="-your.app.package.to.exclude.*" emma debug install test
来源：https://stackoverflow.com/questions/12506396/how-can-i-use-filter-for-emma-when-building-android-test-with-ant-for-a-library