QR code

First, you have to import Layout class:

      import com.infairy.cocina.SDK.Layout.Layout;
      import com.infairy.cocina.SDK.Layout.LayoutQRCode;
      

Then, get Layout service

        Layout layout=(Layout)Tools.getService(context, Layout.class.getName(), "(FUNCTION=LAYOUT)");
      

Next, create layout tag and get LayoutID for other layout object used purpose:

            LayoutTag ltag=new LayoutTag();

            ltag.backgroundImage="img/background.png";
            ltag.bundleID=BundleID;
            ltag.LayoutHeight=450;
            ltag.LayoutWidth=800;
            ltag.title="My App";
            /*
             * Create layout tag and get layout id for other layout object use
             */
            LayoutID=layout.createUI(this, ltag);
      

Next, create QR code layout object:

          LayoutQRCode lqr=new LayoutQRCode();
          lqr.LayoutID=LayoutID;
          lqr.left=100;
          lqr.top=0;
          lqr.width=100;
          lqr.height=100;
          /*
           * QR code string, Infairy will be generate a QRCode by this string
           */
          lqr.value="http://www.infairy.com";
          /*
           * Create QRCode object
           */
          layout.createUI(this, lqr);
      

The QRcode layout can be clicked by users, you just need to do defined the key value:

          lqr.key=device.DEVICE_OPERATION_USER_DEFINED_0;
      

"DEVICE_OPERATION_USER_DEFINED_0" is defined by com.infairy.cocina.SDK.device.DevicePool#DEVICE_OPERATION_xxx
then defined the Operation object( refer to Operation):

        public class myFirstBundle implements BundleActivator, Runnable{
            ...
           
           /*
            * Bundle ID
            */
           String BundleID="";
           
           /*
            * Layout ID
            */
           String LayoutID="";
           
           Thread me;

           /*
            * Layout object 
            */
           Layout layout;
           
          /*
           * entry point
           */
          public void start(BundleContext context) throws Exception {
              ...
              /*
               * get layout service
               */
              layout=(Layout)Tools.getService(context, Layout.class.getName(), "(FUNCTION=LAYOUT)");

              .....

              /*
               * define operation for layout key mapping
               */
              Vector Operation=new Vector();
              OperationDNA oobj=new OperationDNA();
              
              //when user click the image layout object, this operation object will trigger to run the Funtoin:Go()
              oobj.KEY=device.DEVICE_OPERATION_USER_DEFINED_0;   
              oobj.Function="Go";
              Operation.addElement(oobj);
              
              dict.put(InfairyInterface.DeviceOperation, Operation);

              ...
              
              BundleID=device.addDevice(this, dict);
            

You have also implemnt Go() function to catch up the action.

              public void Go(){
                ....
              }
            

Last, how can we get a QRcode result by Infairy App scan?
Step 1: tell Infairy that you want to scan the QR code:

              device.GetQRCode();
            

Step 2: Wait for QR code Event by EventSensorDNA:

              public void handleEvent(Event evnt) {
                  EventSensorDNA ESO=(EventSensorDNA)evnt.getProperty(device.BROADCAST_SENSOR_TRIGGER_EVENTOBJECT);
                  if(ESO==null && P2PEVT==null) return;

                  if(ESO!=null){
                    String triggertype=ESO.TYPE;
                    
                    
                    if(ESO.TYPE.equals(device.BROADCAST_FUNCTION_QRCODE) && ESO.ITEM.equals(device.DEVICE_VALUE_TYPE_QRCODE)){
                        System.out.println(ESO.VALUE);    
                    }
                  }
                }

            

The "ESO.VALUE" is the value of you asked.

The QR code layout object properties show as below:

          /**
           * Layout id of Bundle
           */
          public String LayoutID="";
          /**
           * Layout axis of top, default is 0
           */
          public int top=0;
          /**
           * Layout axis of left, default is 0
           */
          public int left=0;
          /**
           * Layout width in pixel, default is 10
           */
          public int width=10;
          /**
           * Layout height in pixel, default is 10
           */
          public int height=10;
          /**
           * Layout visibility, default is true
           */
          public boolean visible=true;
          /**
           * Layout key defined, please refer to {@link com.infairy.cocina.SDK.device.DevicePool#DEVICE_OPERATION_DIMMER}, {@link com.infairy.cocina.SDK.device.DevicePool#DEVICE_OPERATION_xxx}...
           */
          public String key="";
          /**
           * Layout key value, defined by developer
           */
          public String value="";
          /**
           * Layout key index value, defined by developer
           */
          public String index="";