Question

我的PyQt4应用程序中有一个QListWidget。它包含文件夹路径。我想将其内容保存到QSettings并稍后加载它们。我使用此代码执行此操作：

def foldersSave(self):
    folders = {} '''create dict to store data'''
    foldersnum = self.configDialog.FolderLIST.count() '''get number of items'''
    if foldersnum:
        for i in range(foldersnum):
            folders[i] = self.configDialog.FolderLIST.item(i).text() '''save items text to dict'''
        return str(folders) '''return string of folders to store in QSettings'''
    return None

但是，如果我这样设置文件夹路径存储在配置文件中，如：

musicfolders={0: PyQt4.QtCore.QString(u'/home/sam/Ubuntu One')}

所以我不知道如何加载它们。我尝试过不同的变体：

def foldersLoad(self):
    folders = eval(self.tunSettings.value('musicfolders').toString())

它返回错误：

TypeError: eval() arg 1 must be a string or code object

看起来我只需要以其他方式保存数据。很多，但没有任何线索。我确定答案是微不足道的，但我被困住了。

Answer 1

解决方案非常简单。我当时使用的是QStringList。

def foldersSave(self):
    folders = QtCore.QStringList()
    foldersnum = self.configDialog.FolderLIST.count()
    if foldersnum:
        for i in range(foldersnum):
            print (i, " position is saved: ", self.configDialog.FolderLIST.item(i).text())
            folders.append(self.configDialog.FolderLIST.item(i).text())
        return folders
    return None

并加载

def foldersLoad(self):
    folders = QtCore.QStringList()
    folders = self.tunSettings.value('musicfolders', None).toStringList()
    if folders.count():
        foldersnum = folders.count()
        for i in range(foldersnum):
            self.configDialog.FolderLIST.addItem(folders.takeFirst())

如何使用PyQt4在QSetting中保存和加载QListWidjet内容？

1 个答案: