The special function characters such as FNC1 through FNC4 belong to the class of “non-data characters” that can be encoded within various barcode symbologies but with do not have any direct ASCII representation in the decoded data stream. Each symbology that supports such characters has a different scheme for encoding them in its internal representation … Read more
You can use zxing library to generate barcode easily. first, locate core.jar under libs folder. libs/core.jar You can download ZXing-2.1.zip from here. http://repo1.maven.org/maven2/com/google/zxing/ (source) After unzipping the file, find the jar file. \ZXing-2.1\zxing-2.1\core\core.jar And then write your own code like below. import java.util.EnumMap; import java.util.Map; import android.app.Activity; import android.graphics.Bitmap; import android.os.Bundle; import android.view.Gravity; import android.widget.ImageView; … Read more
iText is a great Java PDF library. They also have an API for creating barcodes. You don’t need to be creating a PDF to use it. This page has the details on creating barcodes. Here is an example from that site: BarcodeEAN codeEAN = new BarcodeEAN(); codeEAN.setCodeType(codeEAN.EAN13); codeEAN.setCode(“9780201615883”); Image imageEAN = codeEAN.createImageWithBarcode(cb, null, null); The … Read more
I figured it out but Apple didn’t make it so obvious. The callback function from the delegate AVCaptureMetadataOutputObjectsDelegate has been renamed and the parameter names are different! So, replace func captureOutput(_ captureOutput: AVCaptureOutput!, didOutputMetadataObjects metadataObjects: [Any]!, from connection: AVCaptureConnection!) to func metadataOutput(_ output: AVCaptureMetadataOutput, didOutput metadataObjects: [AVMetadataObject], from connection: AVCaptureConnection) My view controller is now … Read more
Below I have written a code for granting a runtime permissions for Camera, There is an Array of String in which you can give multiple requests granting as which is needed at runtime. public class MainActivity extends AppCompatActivity { private static final int PERMISSION_REQUEST_CODE = 200; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); if … Read more
So, for future reference for anybody who doesn’t want to spend two days searching the internet to figure this out, when you encode byte arrays into QR Codes, you have to use the ISO-8859-1character set, not UTF-8.
After iOS 10 you have to define and provide a usage description of all the system’s privacy-sensitive data accessed by your app in Info.plist as below: Calendar Key : Privacy – Calendars Usage Description Value : $(PRODUCT_NAME) calendar events Reminder : Key : Privacy – Reminders Usage Description Value : $(PRODUCT_NAME) reminder use Contact : … Read more
Just reimport didn’t work. Following worked for me. File -> Invalidate Caches /Restart Then Build -> Rebuild Project That will reimport maven project. Note : You need to invalidate the cache AND ALSO rebuild the project.
Serial ports date from the stone age of computing. That’s where you plugged in your ASR-33 teletype to start typing in your Fortran program. The electrical interface is very simple. So is the Windows API to use a serial port from your own code. Practically any runtime environment supports them. USB has replaced serial port … Read more
We produced the ‘Barcodes’ application for the iPhone. It can decode QR Codes. The source code is available from the zxing project; specifically, you want to take a look at the iPhone client and the partial C++ port of the core library. The port is a little old, from circa the 0.9 release of the … Read more