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Updated on 2026-08-14

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Tangem 2018-06-29 22:59:47 +03:00
parent ec39d1a437
commit c9ffcd0e22
8 changed files with 529 additions and 256 deletions
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app/src/main/java/com/tangem/util/UtilHelper.kt Normal file
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package com.tangem.util
import android.graphics.Bitmap
import android.graphics.Color
import com.google.zxing.BarcodeFormat
import com.google.zxing.EncodeHintType
import com.google.zxing.WriterException
import com.google.zxing.qrcode.QRCodeWriter
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel
import java.util.*
object UtilHelper {
@Throws(WriterException::class)
fun generateQrCode(myCodeText: String): Bitmap {
val hintMap = Hashtable<EncodeHintType, ErrorCorrectionLevel>()
hintMap[EncodeHintType.ERROR_CORRECTION] = ErrorCorrectionLevel.H // H = 30% damage
val qrCodeWriter = QRCodeWriter()
val size = 256
val bitMatrix = qrCodeWriter.encode(myCodeText, BarcodeFormat.QR_CODE, size, size, hintMap)
val width = bitMatrix.width
val bmp = Bitmap.createBitmap(width, width, Bitmap.Config.RGB_565)
for (x in 0 until width) {
for (y in 0 until width) {
bmp.setPixel(y, x, if (bitMatrix.get(x, y)) Color.BLACK else Color.WHITE)
}
}
return bmp
}
// private static Bitmap generateQrCode(String myCodeText) throws WriterException {
// Hashtable<EncodeHintType, ErrorCorrectionLevel> hintMap = new Hashtable<>();
// hintMap.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H); // H = 30% damage
//
// QRCodeWriter qrCodeWriter = new QRCodeWriter();
//
// int size = 256;
//
// BitMatrix bitMatrix = qrCodeWriter.encode(myCodeText, BarcodeFormat.QR_CODE, size, size, hintMap);
// int width = bitMatrix.getWidth();
// Bitmap bmp = Bitmap.createBitmap(width, width, Bitmap.Config.RGB_565);
// for (int x = 0; x < width; x++) {
// for (int y = 0; y < width; y++) {
// bmp.setPixel(y, x, bitMatrix.get(x, y) ? Color.BLACK : Color.WHITE);
// }
// }
// return bmp;
// }
}