Putting UIAutomator tests together to a test suite is a quick thing:

package de.androidtest.myapplication;

import org.junit.runner.RunWith;
import org.junit.runners.Suite;

@RunWith(Suite.class)
@Suite.SuiteClasses({InterAppTest1.class, InterAppTest2.class})
public class AppTestSuite {}

Execute similar to a single test by clicking right and run the suite.