Creating extension using external library with java 8 features

[mrpcampos]

Hi,

I'm trying to build an extension that uses an external library, in that library theres use of java 8 features such as default interface methods.
The following trace shows the error when i try to build it:

dexAllExtensions:

dexExtension:
     [java] Uncaught translation error: com.android.dx.cf.code.SimException: default or static interface method used without --min-sdk-version >= 24
     [java] 1 error; aborting

BUILD FAILED
C:\...\appinventor-sources\appinventor\build.xml:46: The following error occurred while executing this line:
C:\...\appinventor-sources\appinventor\components\build.xml:464: The following error occurred while executing this line:
C:\...\appinventor-sources\appinventor\components\build.xml:477: Java returned: 1

Is there a way to build the extension using this library? Or a work around that i could use?

Other info:

• The external library is https://mvnrepository.com/artifact/com.microsoft.onnxruntime/onnxruntime
• The library is already added to the libs folder and the build.xml file was updated to copy it
• The extension already has the UsesLibrary set to this dependency and the androidMinSdk = 24 added to its declaration
• I'm using the appinventor-sources to build it

[Gordon_Lu]

@mrpcampos

default or static interface method used without --min-sdk-version >= 24
     [java] 1 error; aborting

Can you try:

import androidx.annotation.RequiresApi;

and then add this line after @UsesLibraries:

@RequiresApi(api = 24)

[mrpcampos]

tried it, but no luck

[oseamiya]

Use rush.

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