我有一个listview,其代表中有一个中继器,该中继器应该由文本填充.如果中继器的模型属性是通过以下方式硬编码的:
I have a listview who's delegate has a repeater in it which is supposed to be populated by text. If the repeater's model property is hard coded this way:
model: ['String 1', 'String 2', 'String 3'];
通过在转发器的区域中显示3个项目,它可以完美工作. 但是,我想使用ListElement发送这样的列表,这就是我尝试过的:
It works perfectly by showing 3 items in the repeater's region. However, I want to send such a list using a ListElement and this is what I tried:
ListElement{ shape: "Circle"; colors: ['Red', 'Blue']; }不幸的是,这种方法行不通,并引发错误:
Unfortunately this approach doesn't work and throws an error:
ListElement:不能将脚本用于属性值
ListElement: cannot use script for property value
我实现了多少? TIA
How many I achieve this? TIA
推荐答案您不能:
值必须是简单的常量;可以是字符串(带引号,并且可以选择在调用QT_TR_NOOP的情况下),布尔值(真,假),数字或枚举值(例如AlignText.AlignHCenter).
Values must be simple constants; either strings (quoted and optionally within a call to QT_TR_NOOP), boolean values (true, false), numbers, or enumeration values (such as AlignText.AlignHCenter).
向视图公开数据的最强大方法是创建 C ++模型.
The most powerful way to expose data to views is by creating a C++ model.
但是,如果您真的不想使用C ++,则可以将颜色存储在以逗号分隔的字符串中,然后将它们分开:
However, if you really don't want to go to C++, you could store the colours in a comma-separated string, and then split them:
import QtQuick 2.6 import QtQuick.Window 2.0 Window { visible: true width: 200 height: 200 ListView { width: 32 height: 64 anchors.centerIn: parent model: ListModel { ListElement{ shape: "Circle" colors: "red, blue" } ListElement{ shape: "Square" colors: "green,yellow" } } delegate: Rectangle { width: 32 height: 32 radius: shape === "Circle" ? width / 2 : 0 property var colorArray: colors.split(",") gradient: Gradient { GradientStop { position: 0 color: colorArray[0] } GradientStop { position: 1 color: colorArray[1] } } } } }
更多推荐
QML ListElement传递字符串列表
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