Develop Reference

Revert Barcode object to image in Android

I am getting Barcode(com.google.android.gms.vision.barcode) object from a physical sales card via camera. Is there a way to convert it back to a image using gms:play-services-vision library?

I think you will get barcode value in a string. you may try to below code
TextView tv = (TextView)findViewById(R.id.textview);
tv.setText(bitmapstring);
tv.buildDrawingCache();
ImageView img = (ImageView)findViewById(R.id.imageview);
img.setImageBitmap(tv.getDrawingCache());

Seems like there's no way of doing that by using the play-services-vision library. My first thought would be to take a screen capture of the preview of the camera before actually reading the barcode, but let's suppose you cannot do that.
If you have the actual data and the format of the barcode you can use ZXing to generate back the barcode image.
Here's an example of how to do it: Generate barcode image in Android application

How to convert an image that is in png format to WSQ format for android

Hello I am currently developing an android app in biometric fingerprint reader , the app captures and sends the png format a SOAP service, but need to be sent in the WSQ format and then send it as an arrangement of bits in the service , thank you.

I guess after three years you already solved it somehow, but in case anyone else is looking for a solution, you can try the WSQ for Android library. (Disclaimer: I wrote the library.) Add the following dependency to your build.gradle file:
implementation 'com.gemalto.wsq:wsq-android:1.0'
and use the following code to produce the WSQ:
byte[] pngData = ...; //obtain the PNG data from somewhere
Bitmap png = BitmapFactory.decodeByteArray(pngData, 0, pngData.length);
byte[] wsqData = new WSQEncoder(png).encode();

Android ZBar QR Code Scanner - How to read every QR Code

I currently implemented ZBar QR Code Scanner Library into my own app. But, so far, I am just able to read a QR Code that leads to a website. What should I do if I want to scan a QR Code that leads you to dial a phone number or text messages? How do I make my app read any QR Code?

The content of the QR code should be irrelevant -- it's just text. It might happen to contain a URL, but that doesn't change the format of the QR code.
int result = imageScanner.scanImage(image);
// Nonzero means a result was found
if (result != 0) {
// Typical only one symbol unless multiple codes were found
// in the scanned image
for (Symbol symbol : imageScanner.getResults()) {
// .getData() gives the string content of the QR code
String qrCodeContent = symbol.getData();
}
}

Zxing detects on Android device but not on pc

I am using Zxing core.jar to scan bar codes and qr codes and it's working perfectly, but I want to make tests using Robolectric, to run automated tests without an emulator or device, that will take N number of images through zxing, so my problem is that zxing for some reason is not detecting any type of code format from the .jpg files, I'm not sure if there is a limit size on the image, or something else that I'm missing. The piece of code that does the detection is this, which works fine with frame previews converted to jpgs
BinaryBitmap bitmap = getBitmapFromImageData(input);
Collection<BarcodeFormat> decodeFormats = getDecodeFormats();
Map<DecodeHintType, Object> hints = getHints(decodeFormats);
MultiFormatReader multiFormatReader = getMultiFormatReader(hints);
Result rawResult;
try {
rawResult = multiFormatReader.decodeWithState(bitmap);
} catch (NotFoundException e) {
// not really an error, just QR code not found
Log.e(LOG_TAG, "Code Detection not found exception.");
return null;
}
Where the input contains the byte array in jpg format and is being converted by getBitmapFromImageData to Zxings internal formats. And like I said the library is working fine in the device, but I can't find any logical reason on why running this code from my pc won't work.

You're not showing any key code, like how you are reading your image. You should check whether it is being read correctly, being binarized correctly by your code, etc. Look at the unit tests in the project to see how to correctly read and process and image on the desktop. I don't know what your code may be doing in the "get" methods that is different.

QRCode AddressBook type String to Vcard

After scanning the "ADDRESSBOOK" type from QR code, the content that I get is the simple string like:
Sandeep
abc
def
;;my new address
+908888888888
+901111111111
+902222222222
homeemail#example.com
workemail#example.com
http://www.google.com
Now I want to convert this string into vCard and open the address book of the device(phone) with all these contents filled on the specific column...I researched a lot but no Idea. Please guide me into this.
EDIT:
check this QR code:
I have created this vCard type QR code using http://goqr.me/
but after scanning, It just shows the content, not in the vCard format. But I want to convert this simple comtent into vCard.
Please help..

What does each line your code sample represent? The vCard would look something like this:
BEGIN:VCARD
VERSION:3.0
FN:Sandeep
ADR:;;123 Street;City;Region;PostalCode;Country
TEL:+908888888888
TEL:+901111111111
TEL:+902222222222
EMAIL;TYPE=home:homeemail#example.com
EMAIL;TYPE=work:workemail#example.com
URL:http://www.google.com
END:VCARD