qr-code

问题 I'm trying to use PHP to display a QR code for the current page. the_permalink() returns as blank on my Forums. function the_qrcode( $permalink ) { if($permalink == '') { $permalink = 'http://eternityofgamers.com/forums'; } echo $permalink; } In the PHP-enabled text widget, I have <?php the_qrcode(the_permalink()); ?> On the main page, $permalink is echoed as http://eternityofgamers.com/archives/74http://eternityofgamers.com/forums instead of http://eternityofgamers.com/archives/74 . 回答1: The

问题 im trying to generate a QR code in my app. The problem is that whenever I do the picture is just an empty square. I stripped down the code to the basics to try and show my problem. struct ContentView: View { @State var image: Image = Image(systemName: "circle.fill") var body: some View { VStack { image .resizable() .aspectRatio(contentMode: .fill) .frame(width: 200, height: 200) .background(Color.green) }.onAppear { let myString = "Hello There" let data = myString.data(using: String.Encoding

问题 I am working with Zxing library to decode QR code for android. I can get QR Code. Now, I want to catch what types of QR code it returns say (URL,Phone Nubmer,Plain Text etc). I tried to explore ResultParser class but i can't use it. Updated : I remove my wrong procedure using ResultParser class. Here is my onActivityResult Code. @Override public void onActivityResult(int requestCode, int resultCode, Intent intent) { if (requestCode == 0) { if (resultCode == RESULT_OK) { contents = intent

问题 While generating the qr code for android using zxing library is it possible to set the version number like version 4 or any other version . Any guidance or link would be appreciable . Thank you. 回答1: No. There would be no real point to this. The version can't be lower than what is required to encode the data, and setting it higher just makes a denser QR code that's slightly harder to read. 来源： https://stackoverflow.com/questions/24484473/is-it-possible-to-set-version-while-generating-qr-code

问题 I am using this Delphi-Unit. I am forced to use this old Delphi implementation, so don't ask about that: https://github.com/foxitsoftware/DelphiZXingQRCode The QRcodes it produces are decoded by any decoders just fine, as long as I keep the error correction level at "Low". If I increase the error correction level, the generated codes can not be decoded by any decoder I tried so far. But I am forced (by a standard) to use an error correction level of Medium, no more no less. However it is not

问题 I Have tried various QR code libraries and webcam capturing techniques. Capturing photos within a specific time interval and then sending it to the QR code library seemed as a good idea but the success ratio for detecting the QR code is extremely low. Could anyone recommend a better approach for detecting the QR code through webcam? Thanks a lot :) Code: void FinalVideo_NewFrame(object sender, NewFrameEventArgs eventArgs) { Bitmap video = (Bitmap)eventArgs.Frame.Clone(); pictureBox1.Image =

问题 I Have tried various QR code libraries and webcam capturing techniques. Capturing photos within a specific time interval and then sending it to the QR code library seemed as a good idea but the success ratio for detecting the QR code is extremely low. Could anyone recommend a better approach for detecting the QR code through webcam? Thanks a lot :) Code: void FinalVideo_NewFrame(object sender, NewFrameEventArgs eventArgs) { Bitmap video = (Bitmap)eventArgs.Frame.Clone(); pictureBox1.Image =

问题 I'm new to C# and got problem with QR code decoding using ZXing.Net . The application launches with no errors, but I get nothing in the result string. I think the problem could be in RGBLuminanceSource() . private static byte[] ToByteArray(Image img) { byte[] byteArray = new byte[0]; using (MemoryStream stream = new MemoryStream()) { img.Save(stream, System.Drawing.Imaging.ImageFormat.Bmp); stream.Close(); byteArray = stream.ToArray(); } return byteArray; } private void button1_Click(object

问题 I need to program a QR code reader in my Windows RT app, so I can get the ID of the specific item I am scanning. I have found the source to a free QR code generator, but I cannot find the code to read the ID from the QR Code, so can anybody in here tell me, where I can find the source to a QR Reader or any other ways to read the QR Code e.g. Install a third-party program, which only reads the QR Code and sends the result back to my program 回答1: I would recommend taking a look at ZXing.NET. It

问题 Does anyone know a good sdk for reading and decoding 2d barcodes (preferably Datamatrix or QR) from within a Java ME application? The application will be closed source, and while I'd prefer that the SDK be free (perhaps MIT or LGPL licenses), I would not mind forking over some cash for a commercial license. I've come across the Semacode SDK but it's GPL licensed and the links to the commercially licensed version do not seem to be working. There's also one from http://qrcode.sourceforge.jp but