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package example.zxing;
import android.app.Activity;
import android.content.pm.PackageManager;
import android.graphics.Color;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;
import android.widget.Button;
import androidx.annotation.NonNull;
import com.journeyapps.barcodescanner.CaptureManager;
import com.journeyapps.barcodescanner.DecoratedBarcodeView;
import com.journeyapps.barcodescanner.ViewfinderView;
import java.util.Random;
/**
* Custom Scannner Activity extending from Activity to display a custom layout form scanner view.
*/
public class CustomScannerActivity extends Activity implements
DecoratedBarcodeView.TorchListener {
private CaptureManager capture;
private DecoratedBarcodeView barcodeScannerView;
private Button switchFlashlightButton;
private ViewfinderView viewfinderView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_custom_scanner);
barcodeScannerView = findViewById(R.id.zxing_barcode_scanner);
barcodeScannerView.setTorchListener(this);
switchFlashlightButton = findViewById(R.id.switch_flashlight);
viewfinderView = findViewById(R.id.zxing_viewfinder_view);
// if the device does not have flashlight in its camera,
// then remove the switch flashlight button...
if (!hasFlash()) {
switchFlashlightButton.setVisibility(View.GONE);
}
capture = new CaptureManager(this, barcodeScannerView);
capture.initializeFromIntent(getIntent(), savedInstanceState);
capture.setShowMissingCameraPermissionDialog(false);
capture.decode();
changeMaskColor(null);
changeLaserVisibility(true);
}
@Override
protected void onResume() {
super.onResume();
capture.onResume();
}
@Override
protected void onPause() {
super.onPause();
capture.onPause();
}
@Override
protected void onDestroy() {
super.onDestroy();
capture.onDestroy();
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
capture.onSaveInstanceState(outState);
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
return barcodeScannerView.onKeyDown(keyCode, event) || super.onKeyDown(keyCode, event);
}
/**
* Check if the device's camera has a Flashlight.
* @return true if there is Flashlight, otherwise false.
*/
private boolean hasFlash() {
return getApplicationContext().getPackageManager()
.hasSystemFeature(PackageManager.FEATURE_CAMERA_FLASH);
}
public void switchFlashlight(View view) {
if (getString(R.string.turn_on_flashlight).equals(switchFlashlightButton.getText())) {
barcodeScannerView.setTorchOn();
} else {
barcodeScannerView.setTorchOff();
}
}
public void changeMaskColor(View view) {
Random rnd = new Random();
int color = Color.argb(100, rnd.nextInt(256), rnd.nextInt(256), rnd.nextInt(256));
viewfinderView.setMaskColor(color);
}
public void changeLaserVisibility(boolean visible) {
viewfinderView.setLaserVisibility(visible);
}
@Override
public void onTorchOn() {
switchFlashlightButton.setText(R.string.turn_off_flashlight);
}
@Override
public void onTorchOff() {
switchFlashlightButton.setText(R.string.turn_on_flashlight);
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
capture.onRequestPermissionsResult(requestCode, permissions, grantResults);
}
}
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