HarmonyOS 鸿蒙Next TextTimer能设置指定的时间开始正向计时吗,不是倒计时,如果不能是否有替换方案
HarmonyOS 鸿蒙Next TextTimer能设置指定的时间开始正向计时吗,不是倒计时,如果不能是否有替换方案
指定时间正向计时可以参考demo
[@Entry](/user/Entry)
[@Component](/user/Component)
struct Index {
textTimerController: TextTimerController = new TextTimerController()
[@State](/user/State) format: string = 'mm:ss.SS'
[@State](/user/State) delay: number = 1000
[@State](/user/State) countDownTimeText: string = ''
[@State](/user/State) hourTime: number = 0
[@State](/user/State) minuteTime: number = 0
[@State](/user/State) secondTime: number = 0
[@State](/user/State) order: boolean = true
[@State](/user/State) countDownTime: number = 55000
[@State](/user/State) timer: number = 0
timeToString(value: number) { //毫秒时间转换
let secondTime = value / 1000, //秒
minuteTime = 0, //分
hourTime = 0; //时
if (secondTime > 60) { //如果秒数大于60,将秒数转换成整数
minuteTime = secondTime / 60; //获取分钟,除以60取整数
secondTime = secondTime % 60; //获取秒数,秒数取余取整
if (minuteTime > 60) {
hourTime = minuteTime / 60;
minuteTime = minuteTime % 60
}
}
let result = “”;
result = “” + this.sizeFormat(secondTime) + “” + result
if (minuteTime >= 0) {
result = “” + this.sizeFormat(minuteTime).split(’.’)[0] + “:” + result
}
if (this.hourTime >= 0) {
result = “” + this.sizeFormat(hourTime).split(’.’)[0] + “:” + result
} //保存时间数据
this.countDownTimeText = result
this.hourTime = hourTime
this.minuteTime = minuteTime
this.secondTime = secondTime
this.secondTime = secondTime
return result;
}
sizeFormat(val: number) {
return val >= 10 ? ‘’ + val : ‘0’ + val
}
startTiming() {
if (!this.order) {
this.timer = setInterval(() => {
this.timeToString(this.countDownTime);
this.countDownTime = this.countDownTime - this.delay;
if (this.countDownTime <= 0) {
this.countDownTimeText = ‘00:00:00’;
clearTimeout(this.timer);
}
}, this.delay)
} else {
this.order = true;
this.timer = setInterval(() => {
this.timeToString(this.countDownTime);
this.countDownTime = this.countDownTime + this.delay
}, this.delay)
}
}
build() {
Column() {
Text((“计时:”) + (this.countDownTimeText)).fontColor(Color.Black)
Row() {
Button(“start”).onClick(() => {
clearInterval(this.timer)
this.startTiming()
})
Button(“pause”).onClick(() => {
clearInterval(this.timer)
})
Button(“reset”).onClick(() => {
this.countDownTime = 55000
this.order = true
this.timeToString(this.countDownTime)
clearInterval(this.timer)
})
}
}
}
}
HarmonyOS 鸿蒙Next TextTimer能设置指定的时间开始正向计时。TextTimer组件本身支持正向计时功能,你可以通过设置相关参数来实现。在HarmonyOS中,TextTimer组件的计时模式可以通过其属性进行配置。要实现指定时间开始正向计时,你可以按照以下步骤操作:
- 初始化TextTimerController实例,用于控制计时器状态。
- 设置计时模式为正向计时(通常在组件的属性中设置)。
- 如果需要在指定时间开始计时,可以在该时间到达时通过代码调用TextTimerController的start方法启动计时器。
如果需要在UI中提供用户交互来设置开始计时的时间,可以结合时间选择器组件(如TimePicker)让用户选择具体时间,并在用户确认后通过回调函数设置并启动TextTimer。
如果以上方法无法满足你的需求,或者你在实现过程中遇到问题,建议检查TextTimer组件的官方文档以获取更多信息。如果问题依旧没法解决请联系官网客服,官网地址是:https://www.itying.com/category-93-b0.html 。