QTreeWidgetItem不被检查

Question

在初始化树之后，我尝试从函数中检查Tree项。检查标记永远不会出现。我不确定我是否需要‘刷新’树，或者我没有与正确的对象交互。

我已经读了很多关于这个小部件的文章，我在几个网站上或多或少地看到了同样的问题，但是答案是8+的，两页代码，或者我只是不明白它们。

我在这里做错什么了？当我调用checkActiveTreeItems()时，为什么树中没有检查标记？

在REST调用之后，我想更新树中的检查项。这似乎是可以的，但这些项目从来没有被检查。

def checkActiveTreeItems(self):
    for label in self.transactie['transactie']['labels']:
        test = QtWidgets.QTreeWidgetItem([label])
        test.setCheckState(0, QtCore.Qt.Checked)

这是创建树的函数，在将QTreeWidgetItem设置为在上面的函数中签入之后，我不再调用它。

def initTree(self):
    print("initTree")
    self.treeWidget = QtWidgets.QTreeWidget(self.gridLayoutWidget)

   self.treeWidget.setSelectionMode(QtWidgets.QAbstractItemView.ContiguousSelection)
    self.treeWidget.setObjectName("treeWidget")

    inkomstenstructuur = requests.get(url="http://localhost:32769/_db/piekenpijp/incoming/inkomstenstructuur")
    iscontent = json.loads(inkomstenstructuur.content)
    self.inkomsten = iscontent
    inkomstentree = QtWidgets.QTreeWidgetItem(["Inkomsten"])

    for groep in iscontent:
        child = QtWidgets.QTreeWidgetItem([groep['groep']])
        inkomstentree.addChild(child)
        for categorie in groep['categorien']:
            child2 = QtWidgets.QTreeWidgetItem([categorie])
            child2.setCheckState(0, QtCore.Qt.Unchecked)
            child.addChild(child2)

    uitgavenstructuur = requests.get(url="http://localhost:32769/_db/piekenpijp/incoming/uitgavenstructuur")
    uscontent = json.loads(uitgavenstructuur.content)
    self.uitgaven = uscontent
    uitgaventree = QtWidgets.QTreeWidgetItem(["Uitgaven"])

    for groep in uscontent:
        child = QtWidgets.QTreeWidgetItem([groep['groep']])
        uitgaventree.addChild(child)
        for categorie in groep['categorien']:
            child2 = QtWidgets.QTreeWidgetItem([categorie])
            child2.setCheckState(0, QtCore.Qt.Unchecked)
            child.addChild(child2)

    self.treeWidget.itemChanged.connect(self.vinkje)

    self.treeWidget.resize(500, 200)
    self.treeWidget.setColumnCount(1)
    self.treeWidget.setHeaderLabels(["Categorie"])
    self.treeWidget.addTopLevelItem(inkomstentree)
    self.treeWidget.addTopLevelItem(uitgaventree)
    self.treeWidget.expandItem(uitgaventree)
    self.gridLayout.addWidget(self.treeWidget, 0, 2, 1, 1)

Answer 1

当前方法创建一个新项，设置其检查状态，然后在不使用它的情况下抛出它。相反，您需要在已经创建的树中使用找到物品：

def checkActiveTreeItems(self):
    for label in self.transactie['transactie']['labels']:
        for item in self.treeWidget.findItems(label, Qt.MatchExactly):
            item.setCheckState(0, QtCore.Qt.Checked)