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

I am using Android Studio 1.2.2 and Realm 0.81.1. I created a Category model 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 turned on annotation processing, but the error still persists.

How can I resolve this error? Any help is greatly appreciated.

Update

I delved into the Kingdom code. I found that in the Util.class file

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

This is a superclass check of the model I am using. When I printed out the superclass of the mode; yourself, for example:

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

I am getting 'io.realm.RealmObject' which is not equal to RealmObject.class. Therefore, Realm may not treat it as a RealmObject.

Could this be the cause causing the error?

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4 answers


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



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I found that the order in which the plugins are listed in your app's build.gradle file does matter. In my case, I had the apply: "realm-android" plugin, but apparently it was specified too early. Putting it on the last job.

It failed.

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


It worked nonetheless (note how big the real android is).

apply plugin: 'com.android.application'
apply plugin: 'android-apt'
apply plugin: 'com.neenbedankt.android-apt'
apply plugin: 'realm-android'
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I don't know if you have this problem, but on my side, I just clean up the project and build again. Works great after that ... Note that I have android studio as ideal.

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In my case, I had two one-to-many relationships. The two relationship classes were in different modules. This caused an error. When I put them in one 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);
    }
}
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