android - isInitialized property for lateinit isn't working in companion object

Question

I have a singleton class which i have implemented it in java fashion :

companion object {

    @Volatile private lateinit var instance: TrapBridge

    fun bridge(): TrapBridge {
        if (!this::instance.isInitialized) {
            synchronized(this) {
                if (!this::instance.isInitialized) {
                    instance = TrapBridge()
                }
            }
        }
        return instance
    }

}

now the problem is i can't use isInitialized property because it throws NoSuchFieldError exception :

java.lang.NoSuchFieldError: No field instance of type Lcom/sample/trap/model/TrapBridge; in class Lcom/sample/trap/model/TrapBridge$Companion; or its superclasses (declaration of 'com.sample.trap.model.TrapBridge$Companion' appears in /data/app/com.sample.trapsample-L9D8b2vxEQfiSg9Qep_eNw==/base.apk)

and i think it's because instance is class variable and not instance variable so i can't reference it with this keyword :/

also i can't check if it's null because it throws UninitializedPropertyAccessException :

lateinit property instance has not been initialized

Answer 1

Unfortunately this is a known issue, tracked here on the official Kotlin issue tracker.