March 28, 2025
HarmonyOS NEXT Practical: QR Code and Scan Code
Objective: To generate a QR code and read its information by scanning the code. Knowledge points:QRCode: A component used to display a single QR code.interface QRCode(value: string) Enter fullscreen mode Exit fullscreen mode value: QR code content string. The maximum support is 512 characters. If exceeded, the first 512 characters will be truncated.Explanation: The string content is guaranteed to be valid and does not support null, undefined, or empty content. When the above content is passed in, an invalid QR code will be generated. QRCode attributecolor: Set the color of the QR code. Default value: ‘# ff000000’, And it does