2 * Copyright © 2021 Damyan Ivanov.
3 * This file is part of MoLe.
4 * MoLe is free software: you can distribute it and/or modify it
5 * under the term of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your opinion), any later version.
9 * MoLe is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License terms for details.
14 * You should have received a copy of the GNU General Public License
15 * along with MoLe. If not, see <https://www.gnu.org/licenses/>.
18 package net.ktnx.mobileledger.ui;
20 import android.content.Context;
22 import androidx.activity.result.ActivityResultLauncher;
23 import androidx.annotation.NonNull;
24 import androidx.fragment.app.Fragment;
25 import androidx.lifecycle.MutableLiveData;
27 public abstract class QRScanCapableFragment extends Fragment {
28 private static final MutableLiveData<Integer> qrScanTrigger = new MutableLiveData<>();
29 protected final ActivityResultLauncher<Void> scanQrLauncher = QR.registerLauncher(this, this::onQrScanned);
30 public static void triggerQRScan() {
31 qrScanTrigger.setValue(1);
33 protected abstract void onQrScanned(String text);
35 public void onAttach(@NonNull Context context) {
36 super.onAttach(context);
37 qrScanTrigger.observe(this, ignored -> {
38 scanQrLauncher.launch(null);