Qt qml 实现日期时间的实时刷新显示

三种实现方法：

1、最简化的一种（亲测可用）

import QtQuick 1.0
 
Item {
    Text { id: time }

    Timer {
        id：timer
        interval: 1000; running: true; repeat: true
        onTriggered: time.text = Qt.formatDateTime(new Date(), "dddd\nyyyy-MM-dd\n-MMM-\nhh-mm-ss") // 星期 www.it165.net 年份 月份 号 大月份
    }
    
    Component.onCompleted: {
                timer.start();
            }
}
 

2、

import QtQuick 2.0

Item {
    width: 300
    height: 150

    //显示
    Text{
        id: textDateTime
        text: currentDateTime();

        anchors.centerIn: parent
    }

    //当前日期时间
    function currentDateTime(){
        return Qt.formatDateTime(new Date(), "yyyy-MM-dd hh:mm:ss.zzz ddd");
    }

    //定时器
    Timer{
        id: timer
        interval: 1 //间隔(单位毫秒):1000毫秒=1秒
        repeat: true //重复
        onTriggered:{
            textDateTime.text = currentDateTime();
        }
    }

    Component.onCompleted: {
        timer.start();
    }

}

/*
Text元素用来显示日期时间,
currentDateTime函数用来获取当前日期时间,
Timer元素用来定时刷新,实现动态呈现.
*/

效果如图：

3、更为繁琐一点的

import QtQuick 1.0
Item {
    Timer {
        interval: 500; running: true; repeat: true
        onTriggered: time.text = getCurDate().toString()
    }
    function getCurDate()
    {
         var d = new Date();
         var week;
         switch (d.getDay()){
         case 1: week="星期一"; break;
         case 2: week="星期二"; break;
         case 3: week="星期三"; break;
         case 4: week="星期四"; break;
         case 5: week="星期五"; break;
         case 6: week="星期六"; break;
         default: week="星期天";
         }
         var years = d.getFullYear();
         var month = add_zero(d.getMonth()+1);
         var days = add_zero(d.getDate());
         var hours = add_zero(d.getHours());
         var minutes = add_zero(d.getMinutes());
         var seconds=add_zero(d.getSeconds());
         var ndate = years+"-"+month+"-"+days+"\n"+hours+":"+minutes+":"+seconds;
         return ndate;
    }
 
    function add_zero(temp)
    {
         if(temp<10) return "0"+temp;
         else return temp;
    }
    Text { id: time }
}

 

参考博客：

https://my.oschina.net/jannn/blog/602235

https://blog.csdn.net/dcba2014/article/details/52879809