Python 如何从 PyQt 中的 QListView 中选择项目
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How to get item selected from QListView in PyQt
提问by Mahendra
I'm new to PyQt. So I'm trying to get selected item from QListView, I'm able to get selected items's index, but I'm not able to get the value of the index, can please someone help me.
我是 PyQt 的新手。所以我试图从 QListView 中获取所选项目，我能够获得所选项目的索引，但我无法获得索引的值，请有人帮助我。
Here is the code :
这是代码：
import sys
import os
from PyQt4 import QtCore, QtGui
from PyQt4.QtCore import *
from PyQt4.QtGui import *
class asset(QtGui.QDialog):
def __init__(self,parent=None):
super(asset, self).__init__(parent)
self.assetList = QtGui.QListView(self)
self.assetList.clicked.connect(self.on_treeView_clicked)
######################################################################
# ----------------- ADD ITEMS----------------------------------------
######################################################################
list_data = listDirs('D:\')
dir = listModel(list_data)
self.assetList.setModel(dir)
self.setStyleSheet('''
*{
background-color : rgb(65,65,65);
color : rgb(210,210,210);
alternate-background-color:rgb(55,55,55);
}
QTreeView,QListView,QLineEdit{
background-color : rgb(50,50,50);
color : rgb(210,210,210);
}
'''
)
self.setFocus()
@QtCore.pyqtSlot(QtCore.QModelIndex)
def on_treeView_clicked(self, index):
itms = self.assetList.selectedIndexes()
for it in itms:
print 'selected item index found at %s' % it.row()
class listModel(QAbstractListModel):
def __init__(self, datain, parent=None, *args):
""" datain: a list where each item is a row
"""
QAbstractListModel.__init__(self, parent, *args)
self.listdata = datain
def rowCount(self, parent=QModelIndex()):
return len(self.listdata)
def data(self, index, role):
if index.isValid() and role == Qt.DisplayRole:
return QVariant(self.listdata[index.row()])
else:
return QVariant()
def listDirs(*path):
completePath = os.path.join(*path)
dirs = os.listdir(os.path.abspath(completePath))
outputDir = []
for dir in dirs:
if os.path.isdir(os.path.join(completePath,dir)):
outputDir.append(dir)
return outputDir
if __name__ == "__main__":
app = QtGui.QApplication(sys.argv)
app.setStyle('plastique')
main = asset()
main.resize(200,200)
main.show()
sys.exit(app.exec_())
Thanks !
谢谢 ！
采纳答案by Avaris
You can use the convenience method dataof QModelIndex. It returns a QVariant. Just convert it to something you'd use, like a QStringwith .toString:
你可以用方便的方法data的QModelIndex。它返回一个QVariant. 只需将其转换为您要使用的内容，例如QStringwith .toString：
print 'selected item index found at %s with data: %s' % (it.row(), it.data().toString())
By the way, QListView.clickedwill give you the index. Unless you have multiple selection, or override the default selection behavior, it will be the only selected item. You don't need to loop over selectedIndexes():
顺便说一下，QListView.clicked会给你索引。除非您有多项选择，或覆盖默认选择行为，否则它将是唯一的选定项。你不需要循环selectedIndexes()：
@QtCore.pyqtSlot(QtCore.QModelIndex)
def on_treeView_clicked(self, index):
print 'selected item index found at %s with data: %s' % (index.row(), index.data().toString())
