開發中常常遇到二維碼掃碼操作，前段時間做專案要實現該功能，於是網上查詢資料實現了，現在把他做出來給各位分享一下，主要包含了二維碼掃描和生成二維碼名片，

先來看看效果圖：

生成的二維碼，開啟微信掃一掃即可看到生成的名片了，可以儲存在聯絡人中。

二維碼掃描方式如下圖：

生成名片程式碼

public class BusinessCardActivity extends Activity{
    private EditText et_only_company;
    private EditText et_only_position;
    private EditText et_only_phone;
    private EditText et_only_email;
    private EditText et_only_web1;
    private EditText et_only_add;
    private EditText et_only_note;
    private EditText et_only_name;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_generate);
        et_only_company= (EditText) findViewById(R.id.et_only_company);
        et_only_position= (EditText) findViewById(R.id.et_only_position);
        et_only_phone= (EditText) findViewById(R.id.et_only_phone);
        et_only_email= (EditText) findViewById(R.id.et_only_email);
        et_only_web1= (EditText) findViewById(R.id.et_only_web1);
        et_only_add= (EditText) findViewById(R.id.et_only_add);
        et_only_note= (EditText) findViewById(R.id.et_only_note);
        et_only_name= (EditText) findViewById(R.id.et_only_name);
        initView();


    }

    private void initView(){
        findViewById(R.id.but).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                String name = et_only_name.getText().toString().trim();
                String company = et_only_company.getText().toString().trim();
                String position = et_only_position.getText().toString().trim();
                String phone = et_only_phone.getText().toString().trim();
                String email = et_only_email.getText().toString().trim();
                String web1 = et_only_web1.getText().toString().trim();
                String add = et_only_add.getText().toString().trim();
                String note = et_only_note.getText().toString().trim();
                String contents = "BEGIN:VCARD\nVERSION:3.0\n" + "N:" + name
                        + "\nORG:" + company + "\nTITLE:" + position
                        + "\nNOTE:" + note + "\nTEL:" + phone + "\nADR:" + add
                        + "\nURL:" + web1 + "\nEMAIL:" + email + "\nEND:VCARD";
                try {
                    Bitmap bm = qr_code(contents, BarcodeFormat.QR_CODE);

                    ImageView img = (ImageView) findViewById(R.id.img_only);

                    img.setImageBitmap(bm);
                } catch (WriterException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }

            }
        });
    }

    public Bitmap qr_code(String string, BarcodeFormat format)
            throws WriterException {
        MultiFormatWriter writer = new MultiFormatWriter();
        Hashtable<EncodeHintType, String> hst = new Hashtable<EncodeHintType, String>();
        hst.put(EncodeHintType.CHARACTER_SET, "UTF-8");
        BitMatrix matrix = writer.encode(string, format, 400, 400, hst);
        int width = matrix.getWidth();
        int height = matrix.getHeight();
        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;
                }

            }
        }
        Bitmap bitmap = Bitmap.createBitmap(width, height,
                Bitmap.Config.ARGB_8888);
        // 通過畫素陣列生成bitmap,具體參考api
        bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
        return bitmap;
    }
}