Something is wrong with resource IDs

[DoDoENT]

It appears that this script does not properly handle resource IDs from multiple AARs.

I have an AAR that contains activities that require resources packaged in that AAR. All resources are referenced using R class from library's package name (com.first.library.R). Next, I have a second AAR which has its own activities and resources that are referenced via com.second.library.R and this AAR also needs first AAR (it calls its activities). This second library uses android-fat-aar script to build a fat AAR.

After fat AAR is built, it is imported in test application (application references AAR directly, it does not reference any of the library projects). Test application can be correctly built and can run on device/emulator. However, when an activity from first AAR is accessed, app crashes with java.lang.NoClassDefFoundError: Failed resolution of: Lcom/first/library/R$layout;. It appears that final APK does not have R class from first AAR available.

Can this be fixed?

If required, I can provide two sample projects that reconstruct the issue.

[adwiv]

I tried testing with a similar setup as explained by you and it worked. Can you please share a sample project? Have you used the word embedded for firstlibrary?

[DoDoENT]

Here is the zip containing a library project that adds activity which starts activity from a proprietary AAR available from Maven and test project that imports the merged AAR generated by library project: MergeAARTest.zip

[adwiv]

Worked for me with gradle plugin 1.5.0 The release aar generated by you was missing the Resources R file for the embedded library. Not sure if that is an issue with 2.0 plugin as I didn't test with it.

[adwiv]

I can confirm that compileReleaseJavaWithJavac does not use the generated R file from embedded library in 2.0.0-alpha3 which results in the problem. Will need to look into the code for the task in 2.0.0

Meanwhile a solution can be to change the path in the embedRClassFiles to the main/src

[adwiv]

Changing the path to main/src doesn't work either. Android 2.0.0 plugin seems to explicitly ignore all R.java files during compilation (tested by creating a R.java class in a different package). This seems to be tricky to fix, will check next week.

[DoDoENT]

Wow, it really works with gradle plugin 1.5.0. This is a great news! The 2.0.0 issue might be an upstream bug, or feature required to support instant run. I suggest filing a bug report to gradle plugin developers and ask their opinion on how to perform the same task with new plugin.

Let's keep this issue open until solution for plugin 2.0.0 is found. Thank you for helping me out.

[DoDoENT]

The 2.0.0 plugin has now been released and is now official tool for android development. Adding support for it should be important now.

[mic331]

@adwiv Do you have plans to resolve this for 2.0.0? I too have multiple aars and your plugin is what currently works to bundle everything. If not, can you recommend an alternative?

[maxxx]

confirm this bug with "com.android.tools.build:gradle:2.1.2" and gradle 2.14. https://github.com/adwiv/android-fat-aar/issues/19 related

[isometriq]

Same here

[Trinea]

This problem is exist still when gradle is up 2.0.0, I thought whether can modify import xxx.xxx.lib.R of *.java of lib to import xxx.xxx.R?

[adwiv]

Fixed in latest version tested with android gradle 2.2.0. Kindly test and open new issue for any problems.

[isometriq]

Many thanks! will report when testing it

[LilianaB]

Hi,

I am testing the library with 'com.android.tools.build:gradle:2.2.1' and Gradle 3.1. I created my fat aar containing an .aar library. But when I try to use my newly created fat .aar library I get an error on the resources.

See attached image for reference.

Any idea of what can be happening? Thanks in advance.

[adwiv]

Hi, can you please test with the latest release of script.

If there are any problems please open a new issue?

There may be some change with gradle 3.1 as I am still using the bundled gradle 2.14.1

[LilianaB]

Hi

Thanks for the quick response. I tested with the last version I guess. I am using this: apply from: 'https://raw.githubusercontent.com/adwiv/android-fat-aar/master/fat-aar.gradle'

[isometriq]

I had problem with bundled resources and my pattern (in Android Studio) is to "Rebuild" every time when changing gradle files + sync. Try also the "Clean" operation.

[maxim-petlyuk]

I have the same issue as in the first mail. Try with gradle plugin 1.5 - unfortunately it doesn`t help. Maybe somebody find another solution