让APP某一个页面保持屏幕常亮的方法

https://git.merproject.org/mer-core/nemo-keepalive/tree/master

有时候我们需要在某些页面让屏幕一直亮着，不要熄屏，这时候就需要它了

• 添加依赖
  在spec或yaml中添加libkeepalive
• 在qml中使用

/* ------------------------------------------------------------------------- *
 * Copyright (C) 2014 Jolla Ltd.
 * Contact: Martin Jones <martin.jones@jollamobile.com>
 * License: BSD
 * ------------------------------------------------------------------------- */
import QtQuick 2.0
import Sailfish.Silica 1.0
import Nemo.KeepAlive 1.1
ApplicationWindow {
    property var startTime
    property var currentTime
    initialPage: Component {
        Page {
            KeepAlive {
                id: keepAlive
            }
            Timer {
                id: timer
                property int count
                interval: 1000
                repeat: true
                onTriggered: {
                    ++count
                    currentTime = new Date()
                }
            }
            Column {
                width: parent.width
                spacing: Theme.paddingLarge
                anchors.centerIn: parent
                TextSwitch {
                    text: "Keep Alive"
                    anchors.horizontalCenter: parent.horizontalCenter
                    onCheckedChanged: {
                        startTime = new Date()
                        currentTime = new Date()
                        timer.count = 0
                        timer.restart()
                        keepAlive.enabled = checked
                    }
                }
                Label {
                    anchors.horizontalCenter: parent.horizontalCenter
                    text: "Duration: " + Math.round((currentTime.getTime() - startTime.getTime())/1000)
                }
                Label {
                    anchors.horizontalCenter: parent.horizontalCenter
                    text: "Timer triggered: " + timer.count
                }
            }
            Component.onCompleted: {
                startTime = new Date()
                currentTime = new Date()
                timer.start()
            }
        }
    }
}

也许该试着学学qml了……？

@天苯 可以学学，这东西跨平台，写客户端界面首选