Error Illegal use of non virtual function call

[chemouna]

Hi,
Thanks a lot for this template,
I'm trying to apply the same structure to my project everything worked fine except in my unit test module
i got :
Error:(20, 0) (class: com/novoda/gradle/test/SupportedLanguages, method: super$1$stream signature: ()Ljava/util/stream/Stream;) Illegal use of nonvirtual function call

I added :
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_7
targetCompatibility JavaVersion.VERSION_1_7
}
to my app module thinking maybe it's because of java version but that didn't work.
should i launch the install script install-custom-gradle-test-plugin.sh and use android-studio-robolectric-support.gradle with a specific java version ?

thanks.

[nenick]

your default version is java 6 or 8? then yes try to force java 7 for both builds. (plugin and your project)

See also #7

[andreizilla]

Hello... I have successfully built and run your template with Java 1.7, however, I want to use it with Java 1.8. The reason is I want to write my main application in Java 1.8 ,but I would like to use your template as a starting point (because it has all the jacoco stuff set up for robolectric and espresso)

Is there any way to get it to work for 1.8? If not, is there a way I can compile my app with 1.8 but use 1.7 for the tasks that your template depends on?

Currently I get this error (described in this thread) if I try it with 1.8

[nenick]

Maybe this will be just one error in a error chain .. i never read that java 8 is supported for android. There are some projects to support the lambda.

Let us do following experiment. Build a simple app (new project with android studio) based on Java 8 and use all java 8 features you like to have. Let it run on your test device.

If it work, great then we should try to make this template java 8 compatible.

[nenick]

I'm thinking about to switch the base plugin which support robolectric by https://github.com/JCAndKSolutions/android-unit-test

Please try the given example for this plugin with Java 8. There can also jacoco be enabled I have already an working example.