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package es.wolfi.app.passman.activities;
import android.Manifest;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.util.Log;
import android.view.Surface;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.camera.core.AspectRatio;
import androidx.camera.core.CameraSelector;
import androidx.camera.core.ImageAnalysis;
import androidx.camera.core.Preview;
import androidx.camera.lifecycle.ProcessCameraProvider;
import androidx.camera.view.PreviewView;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;
import androidx.lifecycle.LifecycleOwner;
import com.google.common.util.concurrent.ListenableFuture;
import com.google.zxing.Result;
import com.koushikdutta.async.future.FutureCallback;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import es.wolfi.app.passman.R;
import es.wolfi.utils.QrCodeAnalyzer;
public class ScanQRCodeActivity extends AppCompatActivity {
public final static String LOG_TAG = ScanQRCodeActivity.class.getSimpleName();
private static final int REQUEST_CODE_PERMISSIONS = 10;
private static final String[] REQUIRED_PERMISSIONS = {Manifest.permission.CAMERA};
private static final ExecutorService mExecutor = Executors.newSingleThreadExecutor();
PreviewView previewView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_scan_qrcode);
previewView = findViewById(R.id.preview);
if (allPermissionsGranted()) {
startCamera();
} else {
ActivityCompat.requestPermissions(this, REQUIRED_PERMISSIONS, REQUEST_CODE_PERMISSIONS);
}
}
/**
* Process result from permission request dialog box.
* If the request has been granted, start Camera. Otherwise display a toast.
*/
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if (requestCode == REQUEST_CODE_PERMISSIONS) {
if (allPermissionsGranted()) {
startCamera();
} else {
Toast.makeText(this, "Camera permission denied", Toast.LENGTH_SHORT).show();
finish();
}
}
}
/**
* Check if the required camera permission have been granted
*/
private boolean allPermissionsGranted() {
for (String permission : REQUIRED_PERMISSIONS) {
if (ContextCompat.checkSelfPermission(this, permission) != PackageManager.PERMISSION_GRANTED) {
return false;
}
}
return true;
}
private void startCamera() {
ListenableFuture<ProcessCameraProvider> cameraProviderFuture = ProcessCameraProvider.getInstance(this);
Context c = this;
Animation animation = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.scanner);
findViewById(R.id.bar).startAnimation(animation);
cameraProviderFuture.addListener(new Runnable() {
@Override
public void run() {
CameraSelector cameraSelector = new CameraSelector.Builder()
.requireLensFacing(CameraSelector.LENS_FACING_BACK)
.build();
Preview preview = new Preview.Builder()
.setTargetAspectRatio(AspectRatio.RATIO_16_9)
.setTargetRotation(Surface.ROTATION_0).build();
preview.setSurfaceProvider(previewView.getSurfaceProvider());
ImageAnalysis imageAnalysis = new ImageAnalysis.Builder()
.setBackgroundExecutor(mExecutor)
.setTargetAspectRatio(AspectRatio.RATIO_16_9)
.setTargetRotation(Surface.ROTATION_0).build();
imageAnalysis.setAnalyzer(mExecutor, new QrCodeAnalyzer(new FutureCallback<Result>() {
@Override
public void onCompleted(Exception e, Result result) {
if (result != null) {
Intent intent = new Intent();
intent.setData(Uri.parse(result.getText()));
setResult(RESULT_OK, intent);
finish();
return;
}
if (e != null) {
e.printStackTrace();
Log.e(LOG_TAG, "error parsing qr code", e);
new Handler(Looper.getMainLooper()).post(new Runnable() {
@Override
public void run() {
Toast.makeText(c, "Error parsing qr code", Toast.LENGTH_SHORT).show();
}
});
}
}
}));
try {
ProcessCameraProvider cameraProvider = cameraProviderFuture.get();
cameraProvider.unbindAll();
cameraProvider.bindToLifecycle((LifecycleOwner) c, cameraSelector, preview, imageAnalysis);
} catch (ExecutionException | InterruptedException e) {
e.printStackTrace();
}
}
}, ContextCompat.getMainExecutor(this));
}
}
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