I'm trying to shrink my app size with the R8 compiler and the Proguard Rules. The problem is that the Safe Args extension uses reflection in NavArgsLazy.kt like so:
override val value: Args
get() {
var args = cached
if (args == null) {
val arguments = argumentProducer()
val method: Method = methodMap[navArgsClass]
?: navArgsClass.java.getMethod("fromBundle", *methodSignature).also { method ->
// Save a reference to the method
methodMap[navArgsClass] = method
}
@SuppressLint("BanUncheckedReflection") // needed for method.invoke
@Suppress("UNCHECKED_CAST")
args = method.invoke(null, arguments) as Args
cached = args
}
return args
}
And when I try to run the app I get an exception saying that the method fromBundle does not exist when the fragment that uses Safe Args is created. I'm aware of the reflection problems with ProGuard but I cannot fix this, I'm unable to exclude the class that is giving me this error as I cannot access the generated file and excluding all the files that extends from NavArgs interface is not working either.
