Supertypes of the following classes cannot be resolved. Please make sure you have the required dependencies in the classpath

Question

I'm trying out the new CameraX, have followed the instructions mentioned here https://developer.android.com/jetpack/androidx/releases/camera#camera-camera2-1.0.0-alpha07. And I get the following error,

e: Supertypes of the following classes cannot be resolved. Please make sure you have the required dependencies in the classpath: class com.sample.SampleApplication, unresolved supertypes: androidx.camera.core.CameraXConfig.Provider

Can someone help?

Edit: Another thing, I extend "MultiDexApplication" class.

Finn Marquardt · Answer 1 · 2019-12-20T07:47:52.500

0

your Application should look similar to this:

public class AppController extends Application implements CameraXConfig.Provider {

and the implemented method like this:

@NonNull
@Override
public CameraXConfig getCameraXConfig() {
    return Camera2Config.defaultConfig(this);
}

works for me with the same setup you posted in the google group

ie

def camerax_version = "1.0.0-alpha07"
implementation "androidx.camera:camera-core:${camerax_version}"
implementation "androidx.camera:camera-camera2:${camerax_version}"

implementation "androidx.camera:camera-view:1.0.0-alpha04"

in the Activity all I do is:

bind cameraView and bind it to the activity:

@BindView(R.id.cameraView)
CameraView cameraView;
....

 if (checkCameraAndStoragePermissions()) {
        initializeView();
    } else {
        askCameraAndStoragePermissions(new SingleObserver<Boolean>() {
            @Override
            public void onSubscribe(Disposable d) {
            }

            @Override
            public void onSuccess(Boolean response) {
                if (response) {
                    initializeView();
                }
            }

            @Override
            public void onError(Throwable e) {
            }
        });
    }


@SuppressLint("MissingPermission")
private void initializeView() {
    ...
    cameraView.bindToLifecycle(this);
    ...
}

edited Dec 20 '19 at 07:47

answered Dec 18 '19 at 08:49

Finn Marquardt

512
3
9

I have the CameraXConfig.Provider implementation too on my application class. Wondering what could be the reason :thinking: – Sivakumar S Dec 18 '19 at 13:45
hmm that is weird :-/ Where do you get the error? during build process or when going to the activity itself? Can you post your CameraX Activity where you use the camera view? – Finn Marquardt Dec 19 '19 at 07:43
I get the error during build process. And another thing is, I extend "MultiDexApplication" class. Not sure if the issue depends on it.. – Sivakumar S Dec 19 '19 at 10:13
works for me also with MultiDexApplication, so its not that – Finn Marquardt Dec 19 '19 at 12:07
maybe it is because you have the implementation "androidx.camera:camera-lifecycle:1.0.0-alpha01" part in your gradle? Its not really needed in the basic implementation of the cameraview I will update my original asnwer with some code from my activity – Finn Marquardt Dec 20 '19 at 07:41
api "androidx.camera:camera-core:${camerax_version}" fixes the problem though – Sivakumar S Dec 20 '19 at 15:30

score 0 · Answer 2 · answered Dec 20 '19 at 15:36

0

api "androidx.camera:camera-core:${camerax_version}" fixes the problem

answered Dec 20 '19 at 15:36

Sivakumar S

681
5
19

Supertypes of the following classes cannot be resolved. Please make sure you have the required dependencies in the classpath

2 Answers2