禁止在SwipeDelegate

Question

刷卡多的项目在默认情况下SwipeDelegate允许刷卡多的项目，如下面的图片：

正如你所看到的，多刷卡项目同时打开，我想只有一个开放的项目一次意味着如果您打开项目＃1，通过打开项目＃2，项目＃1应该关闭。我怎么能做到这一点？与SwipeDelegate一个ListView

示例代码：

ListView { 
    id: listView 
    anchors.fill: parent 

    delegate: SwipeDelegate { 
     id: delegate 

     text: modelData 
     width: parent.width 

     swipe.right: Rectangle { 
      width: parent.width 
      height: parent.height 

      Label { 
       text: qsTr("SOME ACTION BUTTON") 

       padding: 20 
       anchors.fill: parent 
      } 

     } 
    } 

    model: ListModel { 
     id: listModel 
     ListElement { text: "Lorem ipsum dolor sit amet" } 
     ListElement { text: "Curabitur sit amet risus" } 
     ListElement { text: "Suspendisse vehicula nisi" } 
     ListElement { text: "Mauris imperdiet libero" } 
     ListElement { text: "Sed vitae dui aliquet augue" } 
     ListElement { text: "Praesent in elit eu nulla" } 
     ListElement { text: "Etiam vitae magna" } 
     ListElement { text: "Pellentesque eget elit euismod" } 
     ListElement { text: "Nulla at enim porta" } 
     ListElement { text: "Fusce tincidunt odio" } 
     ListElement { text: "Ut non ex a ligula molestie" } 
     ListElement { text: "Nam vitae justo scelerisque" } 
     ListElement { text: "Vestibulum pulvinar tellus" } 
     ListElement { text: "Quisque dignissim leo sed gravida" } 
    } 


    ScrollIndicator.vertical: ScrollIndicator { } 
} 

Answer 1

这是我会怎么做：

import QtQuick 2.9 
import QtQuick.Controls 2.3 
import QtGraphicalEffects 1.0 

ApplicationWindow { 
    id: window 
    width: 800 
    height: 600 
    visible: true 

    ListView { 
     id: listView 
     anchors.fill: parent 

     ButtonGroup { 
      buttons: listView.contentItem.children 
     } 

     delegate: SwipeDelegate { 
      id: delegate 

      checkable: true 
      text: modelData 
      width: parent.width 
      checked: swipe.complete 
      onCheckedChanged: if (!checked) swipe.close() 

      swipe.right: Rectangle { 
       width: parent.width 
       height: parent.height 
       color: "#666" 

       Label { 
        text: qsTr("SOME ACTION BUTTON") 
        color: "white" 
        leftPadding: 20 
        anchors.verticalCenter: parent.verticalCenter 
       } 
      } 
     } 

     model: ListModel { 
      id: listModel 
      ListElement { text: "Lorem ipsum dolor sit amet" } 
      ListElement { text: "Curabitur sit amet risus" } 
      ListElement { text: "Suspendisse vehicula nisi" } 
      ListElement { text: "Mauris imperdiet libero" } 
      ListElement { text: "Sed vitae dui aliquet augue" } 
      ListElement { text: "Praesent in elit eu nulla" } 
      ListElement { text: "Etiam vitae magna" } 
      ListElement { text: "Pellentesque eget elit euismod" } 
      ListElement { text: "Nulla at enim porta" } 
      ListElement { text: "Fusce tincidunt odio" } 
      ListElement { text: "Ut non ex a ligula molestie" } 
      ListElement { text: "Nam vitae justo scelerisque" } 
      ListElement { text: "Vestibulum pulvinar tellus" } 
      ListElement { text: "Quisque dignissim leo sed gravida" } 
     } 


     ScrollIndicator.vertical: ScrollIndicator { } 
    } 
} 

ButtonGroup确保只有一个 “按钮”（SwipeDelegate从AbstractButton衍生）可一次检查。 SwipeDelegate没有视觉效果来表示检查状态，所以我们可以安全地使用它来跟踪哪一个应该打开。我们仍然需要关闭，虽然先前开放的委托，所以这也正是

onCheckedChanged: if (!checked) swipe.close() 

进来。