package com.hdl.sdk.sourceos.qrcode; import android.graphics.Bitmap; import android.text.TextUtils; import com.google.zxing.BarcodeFormat; import com.google.zxing.EncodeHintType; import com.google.zxing.MultiFormatWriter; import com.google.zxing.WriterException; import com.google.zxing.common.BitMatrix; import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel; import java.util.HashMap; import java.util.Map; /** * Created by Tong on 2021/11/8. * 二维码 */ public class QRCodeUtils { /** * 生成二维码 */ public static Bitmap createQRCode(String txt, int width, int height, int margin) throws WriterException { Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888); createQRCode(bitmap, txt, width, height, margin); return bitmap; } /** * 生成二维码 */ public static void createQRCode(Bitmap bitmap, String txt, int width, int height, int margin) throws WriterException { if (TextUtils.isEmpty(txt)) { return; } Map hints = new HashMap<>(); hints.put(EncodeHintType.CHARACTER_SET, "utf-8"); hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H); if (margin >= 0) { hints.put(EncodeHintType.MARGIN, margin); } // 生成二维矩阵 BitMatrix matrix = new MultiFormatWriter().encode(txt, BarcodeFormat.QR_CODE, width, height, hints); // 二维矩阵转为一维像素数组,也就是一直横着排了 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.setPixels(pixels, 0, width, 0, 0, width, height); } }