# "Indirectly used type is defined in an unreferenced assembly"
**URL:** https://talk.remobjects.com/t/indirectly-used-type-is-defined-in-an-unreferenced-assembly/24250
**Category:** EBuild
**Tags:** android
**Created:** [February 23, 2021, 7:49pm UTC](https://talk.remobjects.com/t/indirectly-used-type-is-defined-in-an-unreferenced-assembly/24250 "2021-02-23T19:49:16Z")
**Posts on this page:** 8
**Page:** 1
### Author:  [@zmattr](https://talk.remobjects.com/u/zmattr)
#### Post date: [February 23, 2021, 7:49pm UTC](https://talk.remobjects.com/t/indirectly-used-type-is-defined-in-an-unreferenced-assembly/24250/1 "2021-02-23T19:49:16Z")
I’m getting a strange build error when calling the method `openDrawer()` on an Android `DrawerLayout`:
```auto
E: Indirectly used type "androidx.customview.widget.Openable" is defined in an unreferenced assembly ()
```
You can find the code for the [open source DrawerLayout on Github](https://github.com/androidx/androidx/blob/androidx-main/drawerlayout/drawerlayout/src/main/java/androidx/drawerlayout/widget/DrawerLayout.java) and see that it implements `Openable`, which is defined in a DrawerLayout dependency available in `androidx.customview:customview`
```auto
public class DrawerLayout extends ViewGroup implements Openable
```
Even if I include `androidx.customview:customview` in my project as CopyLocal, I still get the same error. I also am getting this error anywhere from .2587 to .2606.
Here’s a sample test case:
[org.gradletest.zip](https://talk.remobjects.com/uploads/short-url/vi4eJ3dAzGli9FuSDnW78yr0bz8.zip) (44.6 KB)
---
### Author:  [@mh](https://talk.remobjects.com/u/mh)
#### Post date: [February 23, 2021, 7:57pm UTC](https://talk.remobjects.com/t/indirectly-used-type-is-defined-in-an-unreferenced-assembly/24250/2 "2021-02-23T19:57:28Z")
This happens when your code uses a.jar and a.jar uses a type from b.jar, but you domino have a reference to b.jar in your own project. Could this be the case here?
---
### Author:  [@zmattr](https://talk.remobjects.com/u/zmattr)
#### Post date: [February 23, 2021, 8:01pm UTC](https://talk.remobjects.com/t/indirectly-used-type-is-defined-in-an-unreferenced-assembly/24250/3 "2021-02-23T20:01:58Z")
> [@mh](#):
>
> This happens when your code uses a.jar and a.jar uses a type from b.jar, but you domino have a reference to b.jar in your own project. Could this be the case here?
Ah ok. Well _my_ code isn’t using it here. This is the code for `Openable`, just the 3 methods.
```
public interface Openable {
boolean isOpen();
void open();
void close();
}
```
I’m getting the error trying to use `openDrawer()` on `DrawerLayout`.
And again, even if I include the library that defines `Openable` (which surely I shouldn’t have to?) then I still get the error.
---
### Author:  [@mh](https://talk.remobjects.com/u/mh)
#### Post date: [February 23, 2021, 8:06pm UTC](https://talk.remobjects.com/t/indirectly-used-type-is-defined-in-an-unreferenced-assembly/24250/5 "2021-02-23T20:06:12Z")
@ck, any thoughts?
---
### Author:  [@zmattr](https://talk.remobjects.com/u/zmattr)
#### Post date: [February 23, 2021, 8:29pm UTC](https://talk.remobjects.com/t/indirectly-used-type-is-defined-in-an-unreferenced-assembly/24250/6 "2021-02-23T20:29:45Z")
> [@zmattr](#):
>
> I’m getting the error trying to use `openDrawer()` on `DrawerLayout`.
fwiw I just noticed that in the sample project I uploaded, I’m calling `open()`. But it also happens calling `openDrawer()`
---
### Author:  [@zmattr](https://talk.remobjects.com/u/zmattr)
#### Post date: [February 23, 2021, 8:36pm UTC](https://talk.remobjects.com/t/indirectly-used-type-is-defined-in-an-unreferenced-assembly/24250/7 "2021-02-23T20:36:22Z")
Ah ok I found something. If I remove the reference to `appcompat` from the sample project then it builds correctly. AppCompat shows that it depends on `androidx.drawerlayout` but does not show `androidx.customview` as a dependency within that. Perhaps the error is resulting from seeing `androidx.customview` missing as a dependency in the version of `drawerlayout` that is inside of `appcompat`?
---
### Author:  [@RemObjectsSoftware](https://talk.remobjects.com/u/RemObjectsSoftware)
#### Post date: [February 24, 2021, 5:45am UTC](https://talk.remobjects.com/t/indirectly-used-type-is-defined-in-an-unreferenced-assembly/24250/8 "2021-02-24T05:45:26Z")
Thanks, logged as [bugs://85628](https://www.remobjects.com/portal/bugs/?id=85628)
---
### Author:  [@RemObjectsSoftware](https://talk.remobjects.com/u/RemObjectsSoftware)
#### Post date: [March 10, 2021, 8:06am UTC](https://talk.remobjects.com/t/indirectly-used-type-is-defined-in-an-unreferenced-assembly/24250/9 "2021-03-10T08:06:21Z")
[bugs://85628](https://www.remobjects.com/portal/bugs/?id=85628) got closed with status fixed.