如何在PyQt的QTreeWidget中添加一行？我遇到了一些严重的麻烦-我有一个QStrings列表，我不知道如何将它添加到另一个类（类Ui_Form）中的QTreeWidget和QStringList另一个类中。
首先，您必须列出QTreeWidgetItem，然后将它们添加到QTreeWidget中。示例：
tree = your_qtreewidget # replace every 'tree' with your QTreeWidget
strings = list_of_strings
l = [] # list of QTreeWidgetItem to add
for i in strings:
l.append(QTreeWidgetItem(i)) # create QTreeWidgetItem's and append them
tree.addTopLevelItems(l) # add everything to the tree
[参考：PyQt文档中的QTreeWidget和QTreeWidgetItem。
这是我的代码，并执行以下操作：
self.ui.treeWidget.topLevelItem(rowcount).setTextAlignment(0, QtCore.Qt.AlignHCenter)以使每个文本项都与中心对齐（水平）from PyQt5.QtWidgets import QMainWindow, QApplication, QTreeWidgetItem
from PyQt5 import QtCore
import sys
import treewidgetwindow as treewidget
class widgetwindow(QMainWindow):
def __init__(self):
super().__init__()
self.ui = treewidget.Ui_MainWindow()
self.ui.setupUi(self)
self.ui.pushButton_edit.clicked.connect(self.add_items)
def add_items(self):
rowcount = self.ui.treeWidget.topLevelItemCount()
self.ui.treeWidget.addTopLevelItem(QTreeWidgetItem(rowcount))
self.ui.treeWidget.topLevelItem(rowcount).setText(0, 'Lincoln a good boy')
self.ui.treeWidget.topLevelItem(rowcount).setCheckState(0, QtCore.Qt.Unchecked)
self.ui.treeWidget.topLevelItem(rowcount).setFlags(
self.ui.treeWidget.topLevelItem(rowcount).flags() | QtCore.Qt.ItemIsUserCheckable)
self.ui.treeWidget.topLevelItem(rowcount).setText(1, 'He added a second column')
self.ui.treeWidget.topLevelItem(rowcount).setTextAlignment(0, QtCore.Qt.AlignHCenter)
self.ui.treeWidget.topLevelItem(rowcount).setTextAlignment(1, QtCore.Qt.AlignHCenter)
if __name__ == '__main__':
app = QApplication(sys.argv)
w = widgetwindow()
w.show()
sys.exit(app.exec_())
窗口的图像将如下所示：TreeWidget Window Preview
同样，如果必须运行完整的代码，则下面是UI文件的代码：（（必须将两个文件都放在同一目录中，并将下面的代码命名为）>] treewidgetwindow.py
# -*- coding: utf-8 -*- # Form implementation generated from reading ui file 'treewidgetwindow.ui' # # Created by: PyQt5 UI code generator 5.14.0 # # WARNING! All changes made in this file will be lost! from PyQt5 import QtCore, QtGui, QtWidgets class Ui_MainWindow(object): def setupUi(self, MainWindow): MainWindow.setObjectName("MainWindow") MainWindow.resize(800, 600) MainWindow.setStyleSheet("#centralwidget{\n" "border: 2px solid grey;\n" "border-radius: 5px;\n" "padding: 5px 15px;\n" "background-color: rgb(232, 216, 86);\n" "}\n" "QPushButton{\n" "border: 2px solid;\n" "border-color: qlineargradient(spread:pad, x1:0, y1:0, x2:0.985075, y2:0.017, stop:0 rgba(255, 255, 255, 255), stop:0.552239 rgba(237, 86, 0, 255));\n" "padding: 5px 15px;\n" "}\n" "QPushButton:hover:!pressed{\n" "color: rgb(238, 238, 236);\n" "}") self.centralwidget = QtWidgets.QWidget(MainWindow) self.centralwidget.setObjectName("centralwidget") self.verticalLayout_2 = QtWidgets.QVBoxLayout(self.centralwidget) self.verticalLayout_2.setObjectName("verticalLayout_2") self.verticalLayout = QtWidgets.QVBoxLayout() self.verticalLayout.setObjectName("verticalLayout") self.treeWidget = QtWidgets.QTreeWidget(self.centralwidget) self.treeWidget.setStyleSheet("QHeaderView::section { \n" " color: black;\n" " padding: 2px;\n" " height: 20px;\n" " border: 5px solid black;\n" " border-left: 2px solid black;\n" " border-right:2px solid black;\n" "}") self.treeWidget.setSelectionMode(QtWidgets.QAbstractItemView.MultiSelection) self.treeWidget.setObjectName("treeWidget") self.treeWidget.headerItem().setTextAlignment(0, QtCore.Qt.AlignCenter) self.treeWidget.headerItem().setTextAlignment(1, QtCore.Qt.AlignCenter) self.treeWidget.headerItem().setTextAlignment(2, QtCore.Qt.AlignCenter) item_0 = QtWidgets.QTreeWidgetItem(self.treeWidget) self.verticalLayout.addWidget(self.treeWidget) self.gridLayout = QtWidgets.QGridLayout() self.gridLayout.setObjectName("gridLayout") self.pushButton_close = QtWidgets.QPushButton(self.centralwidget) self.pushButton_close.setObjectName("pushButton_close") self.gridLayout.addWidget(self.pushButton_close, 1, 1, 1, 1) self.pushButton_edit = QtWidgets.QPushButton(self.centralwidget) self.pushButton_edit.setObjectName("pushButton_edit") self.gridLayout.addWidget(self.pushButton_edit, 0, 1, 1, 1) spacerItem = QtWidgets.QSpacerItem(40, 20, QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Minimum) self.gridLayout.addItem(spacerItem, 0, 0, 1, 1) self.verticalLayout.addLayout(self.gridLayout) self.verticalLayout_2.addLayout(self.verticalLayout) MainWindow.setCentralWidget(self.centralwidget) self.statusbar = QtWidgets.QStatusBar(MainWindow) self.statusbar.setObjectName("statusbar") MainWindow.setStatusBar(self.statusbar) self.retranslateUi(MainWindow) QtCore.QMetaObject.connectSlotsByName(MainWindow) def retranslateUi(self, MainWindow): _translate = QtCore.QCoreApplication.translate MainWindow.setWindowTitle(_translate("MainWindow", "Treewidget Experiment")) self.treeWidget.headerItem().setText(0, _translate("MainWindow", "Column 1")) self.treeWidget.headerItem().setText(1, _translate("MainWindow", "Column 2")) self.treeWidget.headerItem().setText(2, _translate("MainWindow", "Column 3")) __sortingEnabled = self.treeWidget.isSortingEnabled() self.treeWidget.setSortingEnabled(False) self.treeWidget.topLevelItem(0).setText(0, _translate("MainWindow", "data_01")) self.treeWidget.topLevelItem(0).setText(1, _translate("MainWindow", "data_02")) self.treeWidget.topLevelItem(0).setText(2, _translate("MainWindow", "data_03")) self.treeWidget.setSortingEnabled(__sortingEnabled) self.pushButton_close.setText(_translate("MainWindow", "CLOSE")) self.pushButton_edit.setText(_translate("MainWindow", "EDIT"))