CODEWITHSUNDEEP
androidandroid-studiorealmannotation-processing
Shivang Doshi
Shivang Doshi

Reputation: 245

java.lang.IllegalArgumentException: Category is not part of the schema for this Realm

I using Android Studio 1.2.2 and Realm 0.81.1. I have created a Model 'Category' as follows:

@RealmClass
public class Category extends RealmObject {
   private String name;
   // getter and setter
}

But I am getting java.lang.IllegalArgumentException: Category is not part of the schema for this Realm

I even enabled Annotation Processing, but the error is still persisting.

How can I solve this error? Any help is much appreciated.

Update

I dug deeper into the Realm code. I found that in Util.class file, 

if(!superclass.equals(RealmObject.class)) {
        clazz = superclass;
    }

It is checking the superclass of the model I am using. When I printed out the super class of the mode; myself, like:

category.getClass().getSuperclass().getName();

I am getting 'io.realm.RealmObject' which is not equal to RealmObject.class. So Realm might not be considering it as a RealmObject.

Could this be the reason that is causing error?

Upvotes: 3

Views: 3664

Answers (4)

T. Francis
T. Francis

Reputation: 169

I found that the order in which the plugins are specified in the build.gradle file of your app matters. In my case, I had the apply plugin: 'realm-android' in it but apparently it was specified too early. Putting it last worked.

This failed.

apply plugin: 'com.android.application'
apply plugin: 'realm-android'
apply plugin: 'android-apt'
apply plugin: 'com.neenbedankt.android-apt'

Yet this worked (note how real-android is last).

apply plugin: 'com.android.application'
apply plugin: 'android-apt'
apply plugin: 'com.neenbedankt.android-apt'
apply plugin: 'realm-android'

Upvotes: 2

ulusoyca
ulusoyca

Reputation: 881

In my case I had two One-to-Many relationship. Two classes of the relationship were in different modules. This caused error. When I put them in the same module it worked. This is the related part from the source: 

    public <E extends RealmModel> E copyOrUpdate(Realm realm, E obj, boolean update, Map<RealmModel, RealmObjectProxy> cache) {
    // This cast is correct because obj is either
    // generated by RealmProxy or the original type extending directly from RealmObject
    @SuppressWarnings("unchecked") Class<E> clazz = (Class<E>) ((obj instanceof RealmObjectProxy) ? obj.getClass().getSuperclass() : obj.getClass());

    if (clazz.equals(Buddy.class)) {
        return clazz.cast(BuddyRealmProxy.copyOrUpdate(realm, (Buddy) obj, update, cache));
    } else {
        throw getMissingProxyClassException(clazz);
    }
}

Upvotes: 0

darkwater84
darkwater84

Reputation: 103

In my case, I need to add realm plugin (apply plugin: 'realm-android') to every .gradle project that uses realm. RealRecyclerView and my main app project.

Upvotes: 4

Lucian Novac
Lucian Novac

Reputation: 1265

I don't know if you still have this issue but on my side I just clear the project and build again. Works fine after that... Please notice that I have android studio as ide.

Upvotes: 1

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