Fragment not attached to context on Navigation Component

Question

I was navigating through my fragment and suddenly this error happen

java.lang.IllegalStateException: Fragment PesananFragment{3c77b29} (5987833e-384c-48a3-b41b-2d3d1ecad053)} not attached to a context.
    at androidx.fragment.app.Fragment.requireContext(Fragment.java:805)
    at id.vividi.ui.utama.PesananFragment$fetchPaymentData$1.invokeSuspend(PesananFragment.kt:107)
    at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
    at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:56)
    at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:571)
    at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:738)
    at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:678)
    at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:665)

and this is my code causing this error

VolleySingleton.getInstance(requireContext()).addToRequestQueue(historyRequest)

This error always happened when I am navigating through this fragment I've tried using requireContext.applicationContext nothing happen, the error still exists.

Answer 1

This is because your fragment is listening to some events and these are fired before the fragment is attached to context.

Try to use

private Context context;    

@Override
public void onAttach(Context context) {
    super.onAttach(activity);
    this.context= context;
}

@Override
public void onDetach() {
    super.onDetach();
    this.context= null;
}

and while using this context , add

if(context!=null)