Android Gradle adding external library and nested external libraries to a project

Question

How do i add an external library and nested external libraries to an android project?

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My project structure (Not allowed to change)

• A

Answer 1

In your top level settings.gradle (App1/settings.gradle) file do something like this for each library

include ':library1'   
include ':library2'   
include ':library3'   
include ':library4'   

project(':library1').projectDir = new File(rootProject.projectDir, '../libraries/library1')
project(':library2').projectDir = new File(rootProject.projectDir, '../libraries/library2')
project(':library3').projectDir = new File(rootProject.projectDir, '../libraries/library3')
project(':library4').projectDir = new File(rootProject.projectDir, '../libraries/library4')

Remove the other settings.gradle files, you don't need them

then in each build script you only need to use

compile project (':library1')
compile project (':library2')
etc....

as stated above just use a single settings.gradle file in the root project (App1).

Then from your App1 folder run gradlew clean :library1:build to validate that library1 is building correctly.

As for the issue about App1 complaining about missing libraries 3 & 4, are you sure you have no code in the app directly referencing these libraries, either that or the libraries are not being found when compiling library1. Build each library individually to validate they all build ok.