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104 lines
3.4 KiB
104 lines
3.4 KiB
/*
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* Copyright (c) 2017 dm77, m2049r
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.wownero.wownerujo;
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import android.content.Context;
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import android.os.Bundle;
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import android.os.Handler;
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import android.support.v4.app.Fragment;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.Toast;
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import com.google.zxing.BarcodeFormat;
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import com.google.zxing.Result;
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import me.dm7.barcodescanner.zxing.ZXingScannerView;
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import timber.log.Timber;
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public class ScannerFragment extends Fragment implements ZXingScannerView.ResultHandler {
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private OnScannedListener onScannedListener;
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public interface OnScannedListener {
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boolean onScanned(String qrCode);
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}
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private ZXingScannerView mScannerView;
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@Override
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public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
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Timber.d("onCreateView");
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mScannerView = new ZXingScannerView(getActivity());
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return mScannerView;
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}
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@Override
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public void onResume() {
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super.onResume();
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Timber.d("onResume");
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mScannerView.setResultHandler(this);
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mScannerView.startCamera();
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}
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@Override
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public void handleResult(Result rawResult) {
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if ((rawResult.getBarcodeFormat() == BarcodeFormat.QR_CODE)) {
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if (onScannedListener.onScanned(rawResult.getText())) {
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return;
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} else {
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Toast.makeText(getActivity(), getString(R.string.send_qr_address_invalid), Toast.LENGTH_SHORT).show();
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}
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} else {
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Toast.makeText(getActivity(), getString(R.string.send_qr_invalid), Toast.LENGTH_SHORT).show();
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}
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// Note from dm77:
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// * Wait 2 seconds to resume the preview.
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// * On older devices continuously stopping and resuming camera preview can result in freezing the app.
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// * I don't know why this is the case but I don't have the time to figure out.
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Handler handler = new Handler();
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handler.postDelayed(new
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Runnable() {
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@Override
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public void run() {
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mScannerView.resumeCameraPreview(ScannerFragment.this);
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}
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}, 2000);
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}
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@Override
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public void onPause() {
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Timber.d("onPause");
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mScannerView.stopCamera();
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super.onPause();
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}
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@Override
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public void onAttach(Context context) {
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super.onAttach(context);
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if (context instanceof OnScannedListener) {
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this.onScannedListener = (OnScannedListener) context;
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} else {
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throw new ClassCastException(context.toString()
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+ " must implement Listener");
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}
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}
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}
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