How to Print QR Codes with a POS Printer: Difference between revisions

Latest revision as of 07:41, 7 April 2024

Please visit new link of same subject:

https://smartpossdk.gitbook.io/cloudpossdk/faq/printer/print-qr-codes

We're making a move! Our site's content is migrating to a new URL, to provide you with an enhanced browsing experience. Please update your bookmarks accordingly. Thank you for your continuous support!

@@ Line 1: / Line 1: @@
-== Generate QR code bitmap ==
+{{Migrating|https://smartpossdk.gitbook.io/cloudpossdk/faq/printer/print-qr-codes}}
-Generates a QR code bitmap. The code snippet is as follows:
-<syntaxhighlight lang="java">
-    public static Bitmap createQRCode(String str, int widthAndHeight) throws WriterException {
-        Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();
-	hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
-	BitMatrix matrix = new MultiFormatWriter().encode(str, BarcodeFormat.QR_CODE, widthAndHeight, widthAndHeight);
-	int width = matrix.getWidth();
-	int height = matrix.getHeight();
-	int[] pixels = new int[width * height];
-	for (int y = 0; y < height; y++) {
-	    for (int x = 0; x < width; x++) {
-	        if (matrix.get(x, y)) {
-	            pixels[y * width + x] = 0xff000000;
-	        } else {
-	            pixels[y * width + x] = 0xffffffff;
-	        }
-	    }
-        }
-	Bitmap bitmap = Bitmap.createBitmap(width, height,
-	               Bitmap.Config.ARGB_8888);
-	bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
-	return bitmap;
-    }
-</syntaxhighlight >
-== Print the QR code bitmap ==
-Call print API to print bitmap. The code snippet is as follows:
-<syntaxhighlight lang="java">
-printerDevice =
-         (PrinterDevice) POSTerminal.getInstance().getDevice("cloudpos.device.printer");
-printerDevice.open();
-printerDevice.printBitmap(bitmap);
-printerDevice.close();
-</syntaxhighlight >