Qt 5.9 | Qt Bluetooth | Bluetooth Low Energy Scanner Example | Characteristics.qml Example File

Qt 5.9.9 Reference Documentation

# Characteristics.qml Example File

lowenergyscanner/assets/Characteristics.qml

      /***************************************************************************
      **
      ** Copyright (C) 2013 BlackBerry Limited. All rights reserved.
      ** Copyright (C) 2017 The Qt Company Ltd.
      ** Contact: https://www.qt.io/licensing/
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      ** This file is part of the QtBluetooth module of the Qt Toolkit.
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      import QtQuick 2.0

      Rectangle {
          width: 300
          height: 600

          Header {
              id: header
              anchors.top: parent.top
              headerText: "Characteristics list"
          }

          Dialog {
              id: info
              anchors.centerIn: parent
              visible: true
              dialogText: "Scanning for characteristics...";
          }

          Connections {
              target: device
              onCharacteristicsUpdated: {
                  menu.menuText = "Back"
                  if (characteristicview.count === 0) {
                      info.dialogText = "No characteristic found"
                      info.busyImage = false
                  } else {
                      info.visible = false
                      info.busyImage = true
                  }
              }

              onDisconnected: {
                  pageLoader.source = "main.qml"
              }
          }

          ListView {
              id: characteristicview
              width: parent.width
              clip: true

              anchors.top: header.bottom
              anchors.bottom: menu.top
              model: device.characteristicList

              delegate: Rectangle {
                  id: characteristicbox
                  height:300
                  width: parent.width
                  color: "lightsteelblue"
                  border.width: 2
                  border.color: "black"
                  radius: 5

                  Label {
                      id: characteristicName
                      textContent: modelData.characteristicName
                      anchors.top: parent.top
                      anchors.topMargin: 5
                  }

                  Label {
                      id: characteristicUuid
                      font.pointSize: characteristicName.font.pointSize*0.7
                      textContent: modelData.characteristicUuid
                      anchors.top: characteristicName.bottom
                      anchors.topMargin: 5
                  }

                  Label {
                      id: characteristicValue
                      font.pointSize: characteristicName.font.pointSize*0.7
                      textContent: ("Value: " + modelData.characteristicValue)
                      anchors.bottom: characteristicHandle.top
                      horizontalAlignment: Text.AlignHCenter
                      anchors.topMargin: 5
                  }

                  Label {
                      id: characteristicHandle
                      font.pointSize: characteristicName.font.pointSize*0.7
                      textContent: ("Handlers: " + modelData.characteristicHandle)
                      anchors.bottom: characteristicPermission.top
                      anchors.topMargin: 5
                  }

                  Label {
                      id: characteristicPermission
                      font.pointSize: characteristicName.font.pointSize*0.7
                      textContent: modelData.characteristicPermission
                      anchors.bottom: parent.bottom
                      anchors.topMargin: 5
                      anchors.bottomMargin: 5
                  }
              }
          }

          Menu {
              id: menu
              anchors.bottom: parent.bottom
              menuWidth: parent.width
              menuText: device.update
              menuHeight: (parent.height/6)
              onButtonClick: {
                  pageLoader.source = "Services.qml"
                  device.update = "Back"
              }
          }
      }