错误：QQmlApplicationEngine 未能加载组件“网络问题”答案

【问题标题】：Error: QQmlApplicationEngine failed to load component "Network problem"错误：QQmlApplicationEngine 未能加载组件“网络问题”
【发布时间】：2021-12-25 16:15:43
【问题描述】：

我是 qml 和 python 的新手这是我得到的代码和错误：

错误：

QQmlApplicationEngine failed to load component
c:%5CUsers%5Cpcmcb%5COneDrive%5CDesktop%5Capp%5Capp%5Cqml/main.qml: Network error

main.py:

mport sys
import os

from PySide6.QtGui import QGuiApplication
from PySide6.QtQml import QQmlApplicationEngine


if __name__ == "__main__":
app = QGuiApplication(sys.argv)
engine = QQmlApplicationEngine()
engine.load(os.path.join(os.path.dirname(__file__), "qml/main.qml"))


if not engine.rootObjects():
    sys.exit(-1)
sys.exit(app.exec_())

main.qml:

import QtQuick 2.15
import QtQuick.Window 2.15
import QtQuick.Controls 2.15
import QtQuick.Controls.Material 2.15

ApplicationWindow{
    id: window
    width: 400
    height: 580
    visible: true
    title: qsTr("Login Page")
}

当我尝试运行代码时，它给了我上面输入的错误

【问题讨论】：

标签： python qml pyside6

【解决方案1】：

load() 方法需要一个 QUrl，因此传递一个字符串可能会导致问题，更改为：

import os
from pathlib import Path
import sys

from PySide6.QtCore import QCoreApplication, Qt, QUrl
from PySide6.QtGui import QGuiApplication
from PySide6.QtQml import QQmlApplicationEngine

CURRENT_DIRECTORY = Path(__file__).resolve().parent


def main():
    app = QGuiApplication(sys.argv)

    engine = QQmlApplicationEngine()

    filename = os.fspath(CURRENT_DIRECTORY / "qml" / "main.qml")
    url = QUrl.fromLocalFile(filename)

    def handle_object_created(obj, obj_url):
        if obj is None and url == obj_url:
            QCoreApplication.exit(-1)

    engine.objectCreated.connect(handle_object_created, Qt.QueuedConnection)
    engine.load(url)

    sys.exit(app.exec())


if __name__ == "__main__":
    main()

【讨论】：