Evaluate Expression in Android Studio does not work correctly with Realm Objects

Typing this in the Evaluate Expression window in the debugger in Android studio aRealmObject.someRealmList.first() throws a NoSuchElementException: List is empty, when the realm list really isn’t empty.

Android Studio Bumblebee | 2021.1.1 Patch 1 Build #AI-211.7628.21.2111.8139111, built on February 2, 2022 Runtime version: 11.0.11+0-b60-7590822 x86_64 VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o. macOS 12.0.1 GC: G1 Young Generation, G1 Old Generation Memory: 4096M Cores: 16 Registry: external.system.auto.import.disabled=true Non-Bundled Plugins: com.chimerapps.proguard-retrace (1.0.1), com.cmgapps.intellij.proguard-retrace-unscambler (1.3.0), wu.seal.tool.jsontokotlin (3.7.2), org.jetbrains.kotlin (211-1.6.10-release-923-AS7442.40)

realm version 0.7.0 (we currently can’t upgrade higher than this due to kotlin 1.6 issues.

[cmelchior]

After some more digging. I now suspect it is a problem in our generated code somehow:

class Author : RealmObject {
    var firstName: String? = ""
    var lastName: String? = ""
    var age: Int? = 0

    @Ignore
    var ignoreMe: String = ""
        get() {
            return "Hello from Getter: ${field}"
        }
        set(value) {
            field = value
        }
}

In this class, the ignoreMe field works as expected when evaluating, while all the managed properties do not.

There is a few changes in the generated IR, especially this block is present in our generated accessors BLOCK type=kotlin.Nothing origin=null while it isn’t in the default one…but not sure what it does nor if it even makes a difference.

[cmelchior]

The same problem is also in present in Android Studio Dolphin Canary 5.

I did find work-around though. If you switch to Java in the dropdown, you can manually call the getters, which will do the correct thing, e.g. book.getAuthors() instead of book.authors.