After scanning a QR Code I want to save the exact same QR-Code as scanned before. Please see an example of my code from my MainActivity below:
public void onClick(View v) {
if (v.getId() == R.id.btn_1) {
IntentIntegrator integrator = new IntentIntegrator(this);
integrator.setBarcodeImageEnabled(true);
integrator.setPrompt("Scan a barcode or QRCode");
integrator.setOrientationLocked(false);
integrator.initiateScan();
}
if(v.getId()==R.id.btn_2) {
// do something else
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
super.onActivityResult(requestCode, resultCode, data);
IntentResult result = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
if(result!=null){
if(result.getContents()==null) {
Toast.makeText(getBaseContext(), "Cancelled", Toast.LENGTH_LONG).show();
} else {
Toast.makeText(this, "Scanned: " + result.getContents(), Toast.LENGTH_LONG).show();
tvScanFormat.setText((result.getFormatName())); //TextView is set and shows which format the QR code has
tvScanContent.setText(result.getContents()); //TextView with the actual Content is set
result.getBitmap(); //Cannot resolve method 'getBitmap' in 'IntentResult'
}
} else {
super.onActivityResult(requestCode, resultCode, data);
}
}
So I'm seeing that the results I receive from scanning QR Codes are correct but I am not able to save the picture with getBitmap() as shown in the closed Github-Issue 143 from Zxing (Link to GitHub Issue 143).
I use these dependencies in my build.gradle file:
implementation 'com.journeyapps:zxing-android-embedded:3.0.3'
implementation 'com.google.zxing:core:3.4.1'
you can simply generate the scanned code using result.getContents() and result.getFormatName(), your final code should look like this:
public void onClick(View v) {
if (v.getId() == R.id.btn_1) {
IntentIntegrator integrator = new IntentIntegrator(this);
integrator.setBarcodeImageEnabled(true);
integrator.setPrompt("Scan a barcode or QRCode");
integrator.setOrientationLocked(false);
integrator.initiateScan();
}
if(v.getId()==R.id.btn_2) {
// do something else
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
super.onActivityResult(requestCode, resultCode, data);
IntentResult result = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
if(result!=null){
if(result.getContents()==null) {
Toast.makeText(getBaseContext(), "Cancelled", Toast.LENGTH_LONG).show();
} else {
Toast.makeText(this, "Scanned: " + result.getContents(), Toast.LENGTH_LONG).show();
tvScanFormat.setText((result.getFormatName())); //TextView is set and shows which format the QR code has
tvScanContent.setText(result.getContents()); //TextView with the actual Content is set
com.google.zxing.MultiFormatWriter multiFormatWriter = new com.google.zxing.MultiFormatWriter();
switch(result.getFormatName()) {
case "EAN_13": {
com.google.zxing.common.BitMatrix bitMatrix = multiFormatWriter.encode(result.getContents(), com.google.zxing.BarcodeFormat.EAN_13,500,250);
break;
}
case "EAN_8": {
com.google.zxing.common.BitMatrix bitMatrix = multiFormatWriter.encode(result.getContents(), com.google.zxing.BarcodeFormat.EAN_8,500,250);
break;
}
case "UPC_A": {
com.google.zxing.common.BitMatrix bitMatrix = multiFormatWriter.encode(result.getContents(), com.google.zxing.BarcodeFormat.UPC_A,500,250);
break;
}
case "UPC_E": {
com.google.zxing.common.BitMatrix bitMatrix = multiFormatWriter.encode(result.getContents(), com.google.zxing.BarcodeFormat.UPC_E,500,250);
break;
}
case "QR_CODE": {
com.google.zxing.common.BitMatrix bitMatrix = multiFormatWriter.encode(result.getContents(), com.google.zxing.BarcodeFormat.QR_CODE,500,500);
break;
}
case "DATA_MATRIX": {
com.google.zxing.common.BitMatrix bitMatrix = multiFormatWriter.encode(result.getContents(), com.google.zxing.BarcodeFormat.DATA_MATRIX,500,500);
break;
}
case "AZTEC": {
com.google.zxing.common.BitMatrix bitMatrix = multiFormatWriter.encode(result.getContents(), com.google.zxing.BarcodeFormat.AZTEC,500,500);
break;
}
}
com.journeyapps.barcodescanner.BarcodeEncoder barcodeEncoder = new com.journeyapps.barcodescanner.BarcodeEncoder();
//the code below is the bitmap that you want
Bitmap bitmap = barcodeEncoder.createBitmap(bitMatrix);
//use the code below if you want to display the bitmap into an ImageView
myimageview.setImageBitmap(bitmap);
}
} else {
super.onActivityResult(requestCode, resultCode, data);
}
}