Android String转二维码

import java.util.Hashtable;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 android.graphics.Bitmap;import android.util.Log;public class RQcode {private static final String CHARSET = "utf-8";private static final int BLACK = 0xff000000;// 二维码尺寸private static final int QRCODE_SIZE = 300;public static Bitmap getRQcode(String content){Hashtable<EncodeHintType, Object> hashTable = new Hashtable<EncodeHintType, Object>();hashTable.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);hashTable.put(EncodeHintType.CHARACTER_SET, CHARSET);hashTable.put(EncodeHintType.MARGIN, 1);Bitmap bitmap =null;try {BitMatrix bitMatrix = new MultiFormatWriter().encode(content,BarcodeFormat.QR_CODE, QRCODE_SIZE, QRCODE_SIZE, hashTable);int width = bitMatrix.getWidth();int height = bitMatrix.getHeight();int[] pixels = new int[width * height];for (int y = 0; y < height; y++) {              for (int x = 0; x < width; x++) {                  if (bitMatrix.get(x, y)) {                      pixels[y * width + x] = BLACK;                  }              }          } bitmap = Bitmap.createBitmap(width, height,Bitmap.Config.ARGB_8888);          bitmap.setPixels(pixels, 0, width, 0, 0, width, height);} catch (WriterException e) {e.printStackTrace();}return bitmap;}}