Qt 当我在qml中为ListView应用LayoutMirroring时，在触摸屏幕之前，我的屏幕是空的

当我在qml中为ListView应用LayoutMirroring时，在触摸屏幕之前，我的屏幕是空的

import QtQuick 1.1

Item {
    id:idWifiNamePasswordPage
    objectName: "WifiNameAndPasswordPage"
    width: deviceScreenWidth
    height: deviceScreenHeight
    LayoutMirroring.enabled: main.layoutMirroring
    LayoutMirroring.childrenInherit: main.layoutMirroring

    property variant viewClass: AppsProvider.appsList[main.qtEnums.QT_DEVUI_APP_WIFI]
    property bool displaySettings : (viewClass.WifiSettingDisplayUiEnabled == 1) ? true : false
    property string wifiSsid: viewClass.WifiSsid
    property string guestWifiSsid: viewClass.GuestWifiSsid
    property string wifiKey: viewClass.WifiKey 
    property string guestWifiKey: viewClass.GuestWifiKey

    property alias idWifiNamePasswordModel: idWifiNamePasswordModel
    property alias idListView: idListView
    property alias pager: pager

    property string headerTitle: mainModel.GetPOText("wifi_name_password_text")
    property string wifiLabel: mainModel.GetPOText("wifi_settings_label")
    property int selectedIndex:0
    property bool primaryWifiEnable: (main.wifiEnable && main.wifiNetworkStatus) ? true : false
    property bool guestWifiEnable: (main.wifiEnable && main.guestNetworkStatus) ? true : false
    property bool showPrimaryWifiOffText: (main.wifiEnable && !main.wifiNetworkStatus) ? true : false
    property bool showGuestWifiOffText: (main.wifiEnable && !main.guestNetworkStatus) ? true : false
    property string primaryWifiText: (primaryWifiEnable == true) ? mainModel.GetPOText("wifi_primary_network_on_text") : mainModel.GetPOText("wifi_primary_network_off_text")
    property string guestWifiText: (guestWifiEnable == true) ? mainModel.GetPOText("wifi_guest_network_on_text") : mainModel.GetPOText("wifi_guest_network_off_text")
    property string wifiText: mainModel.GetPOText("wifi_set_name_password_text")
    property string primaryWifiOffText: mainModel.GetPOText("wifi_primary_off_text")
    property string guestWifiOffText: mainModel.GetPOText("wifi_guest_off_text")
    property string wifiPrimaryNameText:  mainModel.GetPOText("WiFi_Primary_Name_text")
    property string wifiGuestNameText: mainModel.GetPOText("WiFi_Guest_Name_text")
    property string wifiPasswordText: mainModel.GetPOText("WiFi_Password")
    property string wifiSetNamePasswdHelpText: mainModel.GetPOText("wifi_set_name_password_help_text").arg(main.domainUrl).arg(main.adminKey)
    
    function refreshUI(mainId) {
        if (mainId.activeQmlFile == "WifiNameAndPasswordPage.qml") {
            console.log("In WifiNameAndPasswordPage -- refreshUI")
            mainId.activeQmlId.headerTitle= mainId.getPoText("wifi_name_password_text", "")
            mainId.activeQmlId.wifiLabel= mainId.getPoText("wifi_settings_label", "")
            mainId.activeQmlId.primaryWifiText= (mainId.activeQmlId.primaryWifiEnable == true) ? 
                    mainId.getPoText("wifi_primary_network_on_text", "") : mainId.getPoText("wifi_primary_network_off_text", "")
            mainId.activeQmlId.guestWifiText= (mainId.activeQmlId.guestWifiEnable == true) ? 
                    mainId.getPoText("wifi_guest_network_on_text", "") : mainId.getPoText("wifi_guest_network_off_text", "")
            mainId.activeQmlId.wifiText= mainId.getPoText("wifi_set_name_password_text", "")
            mainId.activeQmlId.primaryWifiOffText= mainId.getPoText("wifi_primary_off_text", "")
            mainId.activeQmlId.guestWifiOffText= mainId.getPoText("wifi_guest_off_text", "")
            mainId.activeQmlId.wifiPrimaryNameText= mainId.getPoText("WiFi_Primary_Name_text", "")
            mainId.activeQmlId.wifiGuestNameText= mainId.getPoText("WiFi_Guest_Name_text", "")
            mainId.activeQmlId.wifiPasswordText= mainId.getPoText("WiFi_Password", "")
            mainId.activeQmlId.wifiSetNamePasswdHelpText= mainId.getPoText("wifi_set_name_password_help_text",[mainId.domainUrl,mainId.adminKey])
            
            loadWifiNamePasswordModel(mainId, mainId.activeQmlId)
            mainId.activeQmlId.idListView.positionViewAtIndex(mainId.activeQmlId.selectedIndex , ListView.Beginning)
        }
    }

    BaseHeader {
        id: baseheader
        title: headerTitle    
    }

    ListModel {
        id: idWifiNamePasswordModel
    }

    ListView {
        id: idListView
        anchors.top: baseheader.bottom
        width: parent.width
        height: deviceScreenHeight - baseheader.height
        clip: true
        orientation: ListView.Horizontal
        snapMode: ListView.SnapOneItem
        highlightRangeMode: ListView.StrictlyEnforceRange
        highlightFollowsCurrentItem: true
        highlightMoveSpeed: main.horizontalScrollingSpeed
        highlightMoveDuration: 200

        model: idWifiNamePasswordModel

        delegate: Rectangle {
            id: idWifinfo
            width: idListView.width
            height: parent.height - bottomPanel.height - (((wifiType === "primary") ? primaryWifiEnable : guestWifiEnable) ? 0 : ((showWifiInfo) ? separator.height+idwifiNetworkText.height : 0) )
            CFlickable {
                id: flickarea
                anchors.fill: parent
                flickableWidth: parent.width                             
                flickableHeight: parent.height
                flickableContentWidth: parent.width
                flickableContentHeight: idTitleRow.height + wifiName.paintedHeight + idWifiSsid.paintedHeight + wifiPassword.height + wifipwd.paintedHeight + 50 //50 = adding all top margins

                Rectangle {
                    id: idTitleRow
                    anchors.top: parent.top
                    anchors.topMargin: 2*main.topMargin - 5
                    anchors.left: parent.left
                    anchors.leftMargin: main.leftMargin - 5
                    Image {
                        id:wifiIcon
                        anchors.left: parent.left
                        anchors.verticalCenter: parent.verticalCenter
                        source: (wifiType === "none") ? "" : (((wifiType === "primary") ? primaryWifiEnable : guestWifiEnable) ? main.qtImages.QT_DEVUI_IMAGE_HOME_WIFI_ON :  main.qtImages.QT_DEVUI_IMAGE_HOME_WIFI_OFF)
                        mirror: main.layoutMirroring
                    }
                    Text {
                        id: idTitle
                        anchors.left: wifiIcon.right                              
                        anchors.verticalCenter: parent.verticalCenter
                        font.pixelSize: pixelSize
                        elide: Text.ElideRight
                        text: wifiTitle
                    }
                }

                Text {
                    id: wifiName
                    width: parent.width - rightMargin
                    anchors.top: idTitleRow.bottom
                    anchors.topMargin: main.topMargin + 5
                    anchors.left: parent.left
                    anchors.leftMargin: main.leftMargin - 5
                    anchors.right: parent.right
                    anchors.rightMargin: main.rightMargin - 5
                    horizontalAlignment: Text.AlignLeft
                    text: ssidLabel
                    font.pixelSize: pixelSize
                    wrapMode: Text.Wrap
                    Component.onCompleted: {
                        console.log("In wifiname")
                        flickarea.flickableContentHeight = idTitleRow.height + wifiName.paintedHeight + idWifiSsid.paintedHeight + wifiPassword.height + wifipwd.paintedHeight + 50 //50 = adding all top margins
                        console.log("Flickarea Height:[" + flickarea.flickableHeight + "], ContenetHeight:[" + flickarea.flickableContentHeight + "]")
                    }
                }

                Text {
                    id: idWifiSsid
                    visible: showWifiInfo
                    anchors.top: wifiName.bottom
                    anchors.topMargin: main.topMargin - 5
                    anchors.left: parent.left
                    anchors.leftMargin: main.leftMargin - 5
                    anchors.right: parent.right
                    anchors.rightMargin: main.rightMargin - 5
                    width: parent.width - rightMargin
                    text: ssid
                    horizontalAlignment: Text.AlignLeft
                    wrapMode: Text.Wrap
                    font.pixelSize: pixelSize
                    Component.onCompleted: {
                        console.log("In wifissid")
                        flickarea.flickableContentHeight = idTitleRow.height + wifiName.paintedHeight + idWifiSsid.paintedHeight + wifiPassword.height + wifipwd.paintedHeight + 50 //50 = adding all top margins
                        console.log("Flickarea Height:[" + flickarea.flickableHeight + "], ContenetHeight:[" + flickarea.flickableContentHeight + "]")
                    }
                }

                Text {
                    id: wifiPassword
                    visible: showWifiInfo
                    width: parent.width - rightMargin
                    anchors.top: idWifiSsid.bottom
                    anchors.topMargin: main.topMargin - 5
                    anchors.left: parent.left
                    anchors.leftMargin: main.leftMargin - 5
                    anchors.right: parent.right
                    anchors.rightMargin: main.rightMargin - 5
                    horizontalAlignment: Text.AlignLeft
                    text: passwdLabel
                    font.pixelSize: pixelSize
                    wrapMode: Text.Wrap
                    Component.onCompleted: {
                        console.log("In wifipassword")
                        flickarea.flickableContentHeight = idTitleRow.height + wifiName.paintedHeight + idWifiSsid.paintedHeight + wifiPassword.height + wifipwd.paintedHeight + 50 //50 = adding all top margins
                        console.log("Flickarea Height:[" + flickarea.flickableHeight + "], ContenetHeight:[" + flickarea.flickableContentHeight + "]")
                    }
                }

                Text {
                    id: wifipwd
                    visible: showWifiInfo
                    anchors.top: wifiPassword.bottom
                    anchors.topMargin: main.topMargin - 5
                    anchors.left: parent.left
                    anchors.leftMargin: main.leftMargin - 5
                    anchors.right: parent.right
                    anchors.rightMargin: main.rightMargin - 5
                    width: parent.width - rightMargin
                    text: passwd
                    horizontalAlignment: Text.AlignLeft
                    wrapMode: Text.Wrap
                    font.pixelSize: pixelSize
                    Component.onCompleted: {
                        console.log("In wifipwd")   
                        flickarea.flickableContentHeight = idTitleRow.height + wifiName.paintedHeight + idWifiSsid.paintedHeight + wifiPassword.height + wifipwd.paintedHeight + 50 //50 = adding all top margins
                        console.log("Flickarea Height:[" + flickarea.flickableHeight + "], ContenetHeight:[" + flickarea.flickableContentHeight + "]")
                    }
                }
            } //End Flickable
        } //end delegate

        onCurrentIndexChanged: {
            console.log("onCurrentIndexChanged [" + currentIndex + "]")
            pager.selected = currentIndex
            setHelpText(currentIndex, idWifiNamePasswordPage)
        }

        // Bottom area
        Rectangle {
            id: bottomPanel
            anchors.bottom: parent.bottom
            width: deviceScreenWidth
            height: deviceScreenHeight/24

            PageIndicator {
                id: pager
                anchors.horizontalCenter: parent.horizontalCenter
                anchors.verticalCenter: parent.verticalCenter
                height: parent.height
                totalCount: idListView.model.count
            }
        }

        // Thin line
        Rectangle {
            id: separator
            visible: ((selectedIndex === 0 && !primaryWifiEnable) || (selectedIndex === 1  && !guestWifiEnable)) ? true : false
            anchors.bottom: idwifiNetworkText.top
            width: deviceScreenWidth
            height: 1
            color: main.gridLineColor
        }

        Text {
            id: idwifiNetworkText
            width: deviceScreenWidth - leftMargin - rightMargin
            height: deviceScreenHeight/5
            visible: ((selectedIndex === 0 && !primaryWifiEnable) || (selectedIndex === 1  && !guestWifiEnable)) ? true : false
            anchors.left: parent.left
            anchors.leftMargin: main.leftMargin - 5
            anchors.right: parent.right
            anchors.rightMargin: main.rightMargin - 5
            anchors.bottom: bottomPanel.top
            text: (selectedIndex === 0) ? primaryWifiOffText : (selectedIndex === 1) ? guestWifiOffText : ""
            font.pixelSize: pixelSize-1
            wrapMode: Text.Wrap
        }
 
    } //end ListView

    function setHelpText(index, refObj) {
        height = 0
        if(index == 0) {
            separator.visible = false
            idwifiNetworkText.visible = false
            if(!refObj.primaryWifiEnable) {
                separator.visible = true
                idwifiNetworkText.visible = true
                idwifiNetworkText.text = refObj.primaryWifiOffText
                height = idwifiNetworkText.height
            }
        } else if(index == 1) {
            separator.visible = false
            idwifiNetworkText.visible = false
            if(!refObj.guestWifiEnable) {
                separator.visible = true
                idwifiNetworkText.visible = true
                idwifiNetworkText.text = refObj.guestWifiOffText
                height = idwifiNetworkText.height
            }
        } else if(index == 2) {
            separator.visible = false
            idwifiNetworkText.visible = false
            idwifiNetworkText.text = "" 
        }
    }

    function loadWifiNamePasswordModel(mainId, refObj) {
        console.log("In Wifi name and password screen - loading model")
        refObj.idWifiNamePasswordModel.clear()
        refObj.idWifiNamePasswordModel.append({"wifiType": "primary", "wifiTitle": refObj.primaryWifiText, "ssidLabel": refObj.wifiPrimaryNameText, "passwdLabel": refObj.wifiPasswordText, "ssid": refObj.wifiSsid, "passwd": refObj.wifiKey, "helpText": "", "showWifiInfo": true})
        refObj.idWifiNamePasswordModel.append({"wifiType": "guest", "wifiTitle": refObj.guestWifiText, "ssidLabel": refObj.wifiGuestNameText, "passwdLabel": refObj.wifiPasswordText, "ssid": refObj.guestWifiSsid, "passwd": refObj.guestWifiKey, "helpText": "", "showWifiInfo": true})
        refObj.idWifiNamePasswordModel.append({"wifiType": "none", "wifiTitle": refObj.wifiText, "ssidLabel": refObj.wifiSetNamePasswdHelpText, "passwdLabel": "", "ssid": "", "passwd": "", "helpText": refObj.wifiSetNamePasswdHelpText, "showWifiInfo": false})
    }

    Component.onCompleted: {
        main.activeQmlId = idWifiNamePasswordPage

        loadWifiNamePasswordModel(main, idWifiNamePasswordPage)

        console.log("WifiNameAndPasswordPage.qml loaded successfully")
        if (!main.isScreenAlreadyLoaded(main.qtEnums.QT_DEVUI_APP_WIFI, "WifiNameAndPasswordPage.qml")) {
            main.languageUpdated.connect(refreshUI)
        }
    }
}

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你有太多不相关的代码。将您的示例简化为演示问题所需的内容。这就是我们所说的a。