在 QML 树视图中预设当前索引

Question

我正在使用QML TreeView列出一些分类选项供用户选择。

使用属性 TreeView.selection，我已将 SlectionModel 分配给树视图。我在预选项目时遇到问题。用

treeView.selection.setCurrentIndex(idx，3(

我只设置了选择模型的属性(项目被正确选择/突出显示(，但treeView.currentIndex仍然无效。当使用向上/向下键时，它将跳转到第一项。

我错过了什么？

 ItemSelectionModel {
        id: treeViewSelectionModel
        objectName: "treeViewSelectionModel"
        model: myModel
        onCurrentChanged:{console.log("Selectio - current changed from ",previous, " to ", current)}
    }
    TreeView {
        focus: true
        id: treeView
        objectName: "treeView"
        headerVisible: false    //to hide the header
        TableViewColumn {
            title: "Name"
            role: "name"
        }
        model: myModel
        selectionMode: SelectionMode.SingleSelection
        selection: treeViewSelectionModel
        Component.onCompleted: {
            var idx = treeView.model.getPreselected();
            console.log("preselected",idx);
          treeView.selection.setCurrentIndex(idx,ItemSelectionModel.Select);
            treeView.selection = treeView.selection
            //These logged current indexes does not match
            console.log("treeView.currentIndex",treeView.currentIndex);
            console.log("treeView.selection.currentIndex",treeView.selection.currentIndex);
            updateGuiSize();
            treeView.forceActiveFocus();
        }
    }

Answer 1

问题是treeView.currentIndex和treeView.selection.currentIndex并不相同。如果要设置 treeView.currentIndex 的值，则只能通过隐藏变量 __listView 访问它。

        __listView.currentIndex = idx.row

编辑：我找到了另一个选择

         treeView.__currentRow = idx.row