即使焦点设置为true返回键导航不起作用 [英] Back key navigation doesn't work even though focus is set to true

问题描述

在我的Qt Android应用我的推项目从菜单到StackView：

In my Qt Android app I push an Item from the menu to the StackView:

import QtQuick 2.0
import QtQuick.Controls 1.0

ApplicationWindow
{
    menuBar: MenuBar
    {
        Menu
        {
            title: qsTr("Menu")
            MenuItem
            {
                text: qsTr("Push page")
                onTriggered: stackView.push("qrc:/qml/SecondPage.qml")
            }
        }
    }

    StackView
    {
        id: stackView
        anchors.fill: parent
        // Implements back key navigation
        focus: true

        initialItem: FirstPage
        {
            width: parent.width
            height: parent.height
        }
    }
}

SecondPage.qml：

SecondPage.qml:

import QtQuick 2.0
import QtQuick.Controls 1.0

Item
{
    width: parent.width
    height: parent.height
    // focus: true

    Keys.onBackPressed: stackView.pop()

    Label
    {
        anchors.centerIn: parent
        text:  "Some text"
        font.pointSize: 32
        color: "gray"
    }
}

虽然，返回键退出整个应用程序。我尝试添加重点：真正的到它是在<$ C $注释掉并调用 event.accepted = TRUE C> Keys.onBack pressed 。为什么返回键preSS忽略？

Even though, back key exits the whole app. I tried adding focus: true to where it is commented out and calling event.accepted = true in Keys.onBackPressed. Why is the back key press ignored?

推荐答案

我应该把弹出语句到 StackView 本身，而不是成为一个子页面：

I should've put the pop statement into the StackView itself, not into a child page:

StackView
{
    id: stackView
    anchors.fill: parent
    // Implements back key navigation
    focus: true

    initialItem: FirstPage
    {
        width: parent.width
        height: parent.height
    }

    Keys.onBackPressed: pop()
}

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