QTreeView的rootIndex被隐藏，因此未显示。一种可能的解决方案是传递路径的父级，并使用QSortFilterProxyModel隐藏其他目录和文件。
import osfrom PyQt5.QtCore import pyqtSlot, QDir, QModelIndex, QSize, QSortFilterProxyModelfrom PyQt5.QtWidgets import QApplication, QFileSystemModel, QMainWindow, QTreeViewclass ProxyModel(QSortFilterProxyModel): def __init__(self, parent=None): super().__init__(parent) self._root_path = "" def filterAcceptsRow(self, source_row, source_parent): source_model = self.sourceModel() if self._root_path and isinstance(source_model, QFileSystemModel): root_index = source_model.index(self._root_path).parent() if root_index == source_parent: index = source_model.index(source_row, 0, source_parent) return index.data(QFileSystemModel.FilePathRole) == self._root_path return True @property def root_path(self): return self._root_path @root_path.setter def root_path(self, p): self._root_path = p self.invalidateFilter()class MainWindow(QMainWindow): def __init__(self, parent=None): super().__init__(parent) self.create_treeview() self.setCentralWidget(self.treeView) def create_treeview(self): path = "/home/data/test" self.treeView = QTreeView() self.treeView.setMinimumSize(QSize(250, 0)) self.treeView.setMaximumSize(QSize(250, 16777215)) self.treeView.setObjectName("treeView") self.dirModel = QFileSystemModel() self.dirModel.setRootPath(QDir.rootPath()) self.dirModel.setFilter(QDir.NoDotAndDotDot | QDir.AllDirs) root_index = self.dirModel.index(path).parent() self.proxy = ProxyModel(self.dirModel) self.proxy.setSourceModel(self.dirModel) self.proxy.root_path = path self.treeView.setModel(self.proxy) proxy_root_index = self.proxy.mapFromSource(root_index) self.treeView.setRootIndex(proxy_root_index) self.treeView.setHeaderHidden(True) self.treeView.clicked.connect(self.tree_click) @pyqtSlot(QModelIndex) def tree_click(self, index): ix = self.proxy.mapToSource(index) print( ix.data(QFileSystemModel.FilePathRole), ix.data(QFileSystemModel.FileNameRole), )if __name__ == "__main__": import sys app = QApplication(sys.argv) w = MainWindow() w.show() sys.exit(app.exec_())
