How to use tools:overrideLibrary with multiple libraries

Question

I would like to create an Android project that is compatible to e.g. API level 4 but would still like to test it with UiAutomator that requires API level 18 on newer devices

Answer 1

According to official doc(section Merge conflict marker for imported libraries), it should be.

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
   package="com.android.example.app"
   xmlns:tools="http://schemas.android.com/tools">
   ...
   <uses-sdk android:targetSdkVersion="22" android:minSdkVersion="2"
             tools:overrideLibrary="com.example.lib1, com.example.lib2"/>

where com.example.lib1, com.example.lib2 are the packages declared in the AndroidManifes inside the libraries.

Answer 2

I have found out that the solution is to create a second AndroidManifest.xml, just for the tests. It has to be saved into the tests directory and needs to contain only the overrideLibrary statement:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
          xmlns:tools="http://schemas.android.com/tools"
          package="${applicationId}">
    <uses-sdk tools:overrideLibrary="android.app, android.support.test, android.support.test.rule, android.support.test.espresso, android.support.test.espresso.idling, android.support.test.uiautomator.v18"/>
</manifest>

If you are using a different directory for your tasks, you can specify it this way in your gradle file:

androidTest.setRoot('src_test_uiautomator')

The AndroidManifest.xml file has to be in the root of that directory, the test sources in the "java" subdirectory.