Ok. I fixed it. For anybody interested, here's how I solved it.
On the Go side, I extended my exported function by adding "ctx content.Context" as a parameter (i e "func Hello(ctx content.Context). On the Java side, I'm then passing the mobile context as follows (this is a React Native app, so it's bound to different from regular Android apps): Context ctx = getReactApplicationContext(); Mobile.hello(ctx); I can then access the application context from the Go side. Now one thing that would be interesting still is whether/how I can reverse bind "com.facebook.react.bridge.ReactContextBaseJavaModule" on the Go side directly, so I can call "getReactApplicationContext()" directly from the Go side rather than pass the context in from Java. I know there's "-classpath" but how does it actually work for external Java libraries? On Wednesday, 24 April 2019 15:27:31 UTC+2, Mark Bauermeister wrote: > > Yea. Turns out that was indeed the issue. I tried accessing a method that > didn't actually exist. > > Unfortunately, your code doesn't work either. It leads to a segmentation > violation/nil pointer error. > I suspect one needs to somehow get the right context from the Java side. > Question is how. > > I already tried an OnCreate override func, but that one is somehow never > called. > > On Wednesday, 24 April 2019 15:08:02 UTC+2, ma...@eliasnaur.com wrote: >> >> >> >> On Wednesday, April 24, 2019 at 2:34:34 PM UTC+2, Mark Bauermeister wrote: >>> >>> I'm currently experimenting with Gomobile Reverse Bindings (my hope is >>> to eventually be able to call getFilesDir(), so I can save my SQLite3 DB on >>> mobile) and it is, quite literally, driving me insane. >>> I've followed the sparse information available, was able to successfully >>> work with 'import "Java/java/lang/System" and call >>> "System.currentTimeMillis()". >>> >>> Now I'm trying to import "Java/android/content" and it fails outright, >>> stating that the package "Java/android/content" cannot be found. >>> >>> What is the correct import path for Android packages, or is there >>> something else I need to do that I'm missing? >>> >> >> Note that reverse binding packages will only be generated if you use a >> type from it; importing is unfortunately not enough. >> >> Perhaps >> >> import "Java/android/content" >> >> var ctx content.Context >> ctx.GetFilesDir() >> >> is enough to get further. >> >> The reverse bindings are very fickle, sorry. >> >> - elias >> > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
