Is Realm close automatically in method in which it was created?

Realm 4.1. My activity:

public class MyActivity extends AppCompatActivity {
private Realm realm;


    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Bundle extras = getIntent().getExtras();
        Produt product = null;
        if (extras != null) {
            product = extras.getInt(Product.PRODUCT);
        }
        setContentView(R.layout.shopping_details);
        realm = Realm.getDefaultInstance();
        imagesList = realm.copyFromRealm(product.getGallery());

        init(product);
}

  private void init(Product product) {
  // some stuff here
  }

   @Override
    public void onDestroy() {
        super.onDestroy();
        realm.close();
    }

OK. It’s work. As you can see I create Relam in onCreate() method and close in onDestroy().

But I need realm object ONLY in method onCreate(). I need to call method realm.copyFromRealm(...) only in `onCreate()

`So do the next change:

1. removeonDestroy()method
2. Remove declaration of variable: private Realm realm;
3. Change onCreate() method

Here result:

@Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Bundle extras = getIntent().getExtras();
        Produt product = null;
        if (extras != null) {
            product = extras.getInt(Product.PRODUCT);
        }
        setContentView(R.layout.shopping_details);
        Realm realm = Realm.getDefaultInstance();
        imagesList = realm.copyFromRealm(product.getGallery());

        init(product);
}

  private void init(Product product) {
  // some stuff here
}

So as result I have:

1. I create Realm object only in specific method: onCreate()
2. After method onCreate() finish the realm object will be destroy automatically
3. In method init() the Realm object not exist
4. I don’t need anymore to close Realm in method onDestroy()

Is I’m right?

[Zhuinden]

Yeah in that case your above code will work as you expect

[cmelchior]

@Imdic It sounds like your question was answered. If you need more information you can also read https://realm.io/docs/java/latest/#closing-realms and https://realm.io/docs/java/latest/#realm-instance-lifecycle