MainFragment.java

package permissions.dispatcher.ktx.sample;

import android.Manifest;
import android.content.Context;
import android.os.Bundle;
import android.view.View;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;

import kotlin.Unit;
import kotlin.jvm.functions.Function0;
import kotlin.jvm.functions.Function1;
import permissions.dispatcher.PermissionRequest;
import permissions.dispatcher.ktx.FragmentExtensionsKt;
import permissions.dispatcher.ktx.PermissionsRequester;

class MainFragment extends Fragment {
    @NonNull
    private PermissionsRequester permissionsRequester;
    
    @Override
    public void onAttach(Context context) {
        super.onAttach(context);
        permissionsRequester = FragmentExtensionsKt.constructPermissionsRequest(this,
                new String[]{Manifest.permission.CAMERA},
                new Function1<PermissionRequest, Unit>() {
                    @Override
                    public Unit invoke(PermissionRequest permissionRequest) {
                        return null;
                    }
                },
                new Function0<Unit>() {
                    @Override
                    public Unit invoke() {
                        return null;
                    }
                },
                new Function0<Unit>() {
                    @Override
                    public Unit invoke() {
                        return null;
                    }
                },
                new Function0<Unit>() {
                    @Override
                    public Unit invoke() {
                        return null;
                    }
                });
    }

    @Override
    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        permissionsRequester.launch();
    }
}