无法将单例作为对象的属性访问

通过对象访问单例

怎么回事？

您使用从命名空间访问附加属性的语法访问了单例。

为什么这样做不好？

不能以这种方式访问单例。表达式的值将是未定义的。

示例

import QtQml
import QtQuick as QQ

QtObject {
    id: root
    // Cannot access singleton as a property of an object. Did you want to access an attached object?
    property var singletonAccess: root.QQ.Application.platform
}

要修复此警告，如果您打算使用单例，请删除命名空间前面的id 或属性。或者，如果想访问附加属性，请检查是否有错别字。

import QtQml
import QtQuick as QQ

QtObject {
    id: root
    property var singletonAccess: QQ.Application.platform
    property bool attachedPropertyAccess: root.QQ.ListView.isCurrentItem
}

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