How to scrollTo the desired item when the root of model changed

ridincal

I've used QListView and QFileSystemModel to show local files. I expect to locate specific file by changing root directory and scrolling to show it, but scrollTo() does not work.

def locateFile(self, fileDIr, filePath):
        self.listView.setRootIndex(self.listView.model().setRootPath(fileDir)
        posidx = self.listView.model().index(filePath)
        self.listView.setCurrentIndex(posidx)
        self.listView.scrollTo(posidx)

How to resolve this issue?

JonB

@ridincal
Show the value of posidx at least. Also please post code that actually compiles/is your actual code, the above does/is not, and then all bets are off.

ridincal

@JonB

import sys
from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(800, 600)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        MainWindow.setCentralWidget(self.centralwidget)
        self.listView = QtWidgets.QListView(self.centralwidget)
        self.listView.setGeometry(QtCore.QRect(20, 10, 531, 521))
        self.listView.setObjectName("listView")
        self.model = QtWidgets.QFileSystemModel()
        self.listView.setModel(self.model)
        self.locateFile("D:\\=test=\\fonts", "D:\\=test=\\fonts\\HYYouYuanTiW.ttf")
        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))

    def locateFile(self, fileDir, filePath):
        self.listView.setRootIndex(self.listView.model().setRootPath(fileDir))
        posidx = self.listView.model().index(filePath)
        self.listView.setCurrentIndex(posidx)
        self.listView.scrollTo(posidx)

class AppMainWnd(QMainWindow , Ui_MainWindow):
    def __init__(self, parent=None):
        super(AppMainWnd, self).__init__(parent)
        self.setupUi(self)

if __name__ == "__main__":
    app = QApplication(sys.argv)
    AppWnd = AppMainWnd()
    sys.exit(app.exec_())