Android Studio形成扫码二维码的代码

你可以使用ZXing库来生成二维码，例如：public Bitmap encodeAsBitmap(String contents, BarcodeFormat format, int desiredWidth, int desiredHeight) {
final int WHITE = 0xFFFFFFFF;
final int BLACK = 0xFF000000;

MultiFormatWriter writer = new MultiFormatWriter();
BitMatrix result = writer.encode(contents, format, desiredWidth, desiredHeight);
int width = result.getWidth();
int height = result.getHeight();
int[] pixels = new int[width * height];
// All are 0, or black, by default
for (int y = 0; y < height; y++) {
int offset = y * width;
for (int x = 0; x < width; x++) {
pixels[offset + x] = result.get(x, y) ? BLACK : WHITE;
}
}

Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
return bitmap;
}