Solution: direct local.Aar file dependencies are not supported when building an aar

ndroid Studio 4.0+ Version throws the following exception during packaging

Direct local .aar file dependencies are not supported when building an AAR. 
The resulting AAR would be broken because the classes and Android resources from any local .aar file dependencies would not be packaged in the resulting AAR. 
Previous versions of the Android Gradle Plugin produce broken AARs in this case too (despite not throwing this error). 
The following direct local .aar file dependencies of the :XXXXXXXXXX

The solution is as follows ：

1. Create a new one module, Major reservations build.gradle file （ Other documents can be deleted ）

2. take “The following direct local .aar file dependencies of the :” Post prompted aar Put the file into the new module In the root directory of ,module The directory structure is as follows ：

3. modify build.gradle The contents of the document , as follows ：

configurations.maybeCreate("default")
artifacts.add("default", file('xxxx.aar'))
 
//  If there are more than one aar, Just need to do it again add
//artifacts.add("default", file('xxxx2.aar'))
//......
//artifacts.add("default", file('xxxxn.aar'))

4. The original aar Of module Go to module The form of depends on new module, The dependency form is compileOnly, as follows ：

dependencies {
    ...    
    compileOnly project(path: ':newmodule')
    ...
}

5. Just pack it again
 

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