1.跳转：
            Intent intent = new Intent(MainActivity.this, CaptureActivity.class);
            //是不是显示历史记录按钮
            intent.putExtra(ZXingConstants.ScanIsShowHistory,true);
            startActivityForResult(intent, ZXingConstants.ScanRequestCode);
        
        2.获取结果：
           @Override
           protected void onActivityResult(int requestCode, int resultCode, Intent data) {
               super.onActivityResult(requestCode, resultCode, data);
               if (data == null) {
                   return;
               }
               if (resultCode == ZXingConstants.ScanRequltCode) {
                   /**
                    * 拿到解析完成的字符串
                    */
                   String result = data.getStringExtra(ZXingConstants.ScanResult);
                   textView.setText(result);
               } else if (resultCode == ZXingConstants.ScanHistoryResultCode) {
                   /**
                    * 历史记录
                    */
                   //自己实现历史页面
                   startActivity(new Intent(MainActivity.this, HistoryActivity.class));
               }
           }
            
        3：生成二维码：
        	Bitmap qrImage = ZXingUtils.createQRImage("xxxxxx");
        	Bitmap qrImage = ZXingUtils.createQRCodeWithLogo("xxxxxx", logoBitmap);