public class MainActivity extends Activity { private EditText etCompany; private EditText etPhone; private EditText etEmail; private EditText etWeb; private Bitmap logo; private static final int IMAGE_HALFWIDTH = 40;//宽度值，影响中间图片大小  @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main); //获得资源图片，可改成获取本地图片或拍照获取图片 logo=BitmapFactory.decodeResource(super.getResources(),R.drawable.y014);
        etCompany =(EditText) findViewById(R.id.etCompany);
        etPhone=(EditText) findViewById(R.id.etPhone);
        etEmail =(EditText) findViewById(R.id.etEmail);
        etWeb =(EditText) findViewById(R.id.etWeb); 
        findViewById(R.id.but).setOnClickListener(new OnClickListener() {
            @Override public void onClick(View v) { // TODO Auto-generated method stub String company=etCompany.getText().toString().trim() ;
                String phone =etPhone .getText().toString().trim() ; 
                String email = etEmail.getText().toString().trim() ;
                String web = etWeb.getText().toString().trim() ; //二维码中包含的文本信息 String contents= "BEGIN:VCARD\nVERSION:3.0\nORG:"+company+"\nTEL:"+phone+"\nURL:"+web+"\nEMAIL:"+email+"\nEND:VCARD"; try { //调用方法createCode生成二维码 Bitmap bm=createCode(contents,logo,BarcodeFormat.QR_CODE);
                ImageView img=(ImageView)findViewById(R.id.imgCode) ; //将二维码在界面中显示  img.setImageBitmap(bm);
            } catch (WriterException e) { // TODO Auto-generated catch block  e.printStackTrace();
            } 
                
            }
        });
        
    } /** * 生成二维码
     * @param string 二维码中包含的文本信息
     * @param mBitmap logo图片
     * @param format  编码格式
     * @return Bitmap 位图
     * @throws WriterException */ public Bitmap createCode(String string,Bitmap mBitmap, BarcodeFormat format) throws WriterException {
        Matrix m = new Matrix(); float sx = (float) 2 * IMAGE_HALFWIDTH / mBitmap.getWidth(); float sy = (float) 2 * IMAGE_HALFWIDTH / mBitmap.getHeight();
        m.setScale(sx, sy);//设置缩放信息 //将logo图片按martix设置的信息缩放 mBitmap = Bitmap.createBitmap(mBitmap, 0, 0,
                mBitmap.getWidth(), mBitmap.getHeight(), m, false);
        MultiFormatWriter writer = new MultiFormatWriter();
        Hashtable hst = new Hashtable();
        hst.put(EncodeHintType.CHARACTER_SET, "UTF-8");//设置字符编码 BitMatrix matrix = writer.encode(string, format, 400, 400, hst);//生成二维码矩阵信息 int width = matrix.getWidth();//矩阵高度 int height = matrix.getHeight();//矩阵宽度 int halfW = width / 2; int halfH = height / 2; int[] pixels = new int[width * height];//定义数组长度为矩阵高度*矩阵宽度，用于记录矩阵中像素信息 for (int y = 0; y < height; y++) {//从行开始迭代矩阵 for (int x = 0; x < width; x++) {//迭代列 if (x > halfW - IMAGE_HALFWIDTH && x < halfW + IMAGE_HALFWIDTH && y > halfH - IMAGE_HALFWIDTH && y < halfH + IMAGE_HALFWIDTH) {//该位置用于存放图片信息 //记录图片每个像素信息 pixels[y * width + x] = mBitmap.getPixel(x - halfW + IMAGE_HALFWIDTH, y - halfH + IMAGE_HALFWIDTH);                } else { if (matrix.get(x, y)) {//如果有黑块点，记录信息 pixels[y * width + x] = 0xff000000;//记录黑块信息  }
                }

            }
        }
        Bitmap bitmap = Bitmap.createBitmap(width, height,
                Bitmap.Config.ARGB_8888); // 通过像素数组生成bitmap bitmap.setPixels(pixels, 0, width, 0, 0, width, height); return bitmap;
    }
    
}