- Qt 5.5
- Qt Bluetooth
- Bluetooth Low Energy Scanner Example
- main.qml Example File
- Qt 5.5.1 Reference Documentation

# main.qml Example File

lowenergyscanner/assets/main.qml

    /***************************************************************************
    **
    ** Copyright (C) 2013 BlackBerry Limited. All rights reserved.
    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** This file is part of the QtBluetooth module of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:BSD$
    ** You may use this file under the terms of the BSD license as follows:
    **
    ** "Redistribution and use in source and binary forms, with or without
    ** modification, are permitted provided that the following conditions are
    ** met:
    **   * Redistributions of source code must retain the above copyright
    **     notice, this list of conditions and the following disclaimer.
    **   * Redistributions in binary form must reproduce the above copyright
    **     notice, this list of conditions and the following disclaimer in
    **     the documentation and/or other materials provided with the
    **     distribution.
    **   * Neither the name of The Qt Company Ltd nor the names of its
    **     contributors may be used to endorse or promote products derived
    **     from this software without specific prior written permission.
    **
    **
    ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
    ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
    ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
    ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
    ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
    ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
    ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
    ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
    ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
    ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
    ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
    **
    ** $QT_END_LICENSE$
    **
    ****************************************************************************/

    import QtQuick 2.0

    Rectangle {
        id: back
        width: 300
        height: 600
        property bool deviceState: device.state
        onDeviceStateChanged: {
            if (!device.state)
                info.visible = false;
        }

        Header {
            id: header
            anchors.top: parent.top
            headerText: "Start Discovery"
        }

        Dialog {
            id: info
            anchors.centerIn: parent
            visible: false
        }

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

            anchors.top: header.bottom
            anchors.bottom: connectToggle.top
            model: device.devicesList

            delegate: Rectangle {
                id: box
                height:100
                width: parent.width
                color: "lightsteelblue"
                border.width: 2
                border.color: "black"
                radius: 5

                Component.onCompleted: {
                    info.visible = false;
                    header.headerText = "Select a device";
                }

                MouseArea {
                    anchors.fill: parent
                    onClicked: {
                        device.scanServices(modelData.deviceAddress);
                        pageLoader.source = "Services.qml"
                    }
                }

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

                Label {
                    id: deviceAddress
                    textContent: modelData.deviceAddress
                    font.pointSize: deviceName.font.pointSize*0.7
                    anchors.bottom: box.bottom
                    anchors.bottomMargin: 5
                }
            }
        }

        Menu {
            id: connectToggle

            menuWidth: parent.width
            anchors.bottom: menu.top
            menuText: { if (device.devicesList.length)
                            visible = true
                        else
                            visible = false
                        if (device.useRandomAddress)
                            "Address type: Random"
                        else
                            "Address type: Public"
            }

            onButtonClick: device.useRandomAddress = !device.useRandomAddress;
        }

        Menu {
            id: menu
            anchors.bottom: parent.bottom
            menuWidth: parent.width
            menuHeight: (parent.height/6)
            menuText: device.update
            onButtonClick: {
                device.startDeviceDiscovery();
                // if startDeviceDiscovery() failed device.state is not set
                if (device.state) {
                    info.dialogText = "Searching...";
                    info.visible = true;
                }
            }
        }

        Loader {
            id: pageLoader
            anchors.fill: parent
        }
    }