时间时区部件

/base/time/time_service
├── etc                      # 组件包含的进程的配置文件
├── figures                  # 构架图
├── framework/js/napi        # js接口解析成napi接口
├── interfaces/inner_api     # 组件对外提供的接口代码
├── services                 # 时间服务实现
│   └── sa_profile           # 组件包含的系统服务的配置文件和进程的配置文件
├── test                     # 接口的单元测试
└── utils                    # 组件包含日志打印和有序公共事件定义的常量

// 导入模块
import systemDateTime from '@ohos.systemDateTime';

// Promise方式的异步方法设置时间   
// time对应的时间为2021-01-20 02:36:25
let time = 1611081385000;
try {
  systemDateTime.setTime(time).then(() => {
    console.info(`Succeeded in setting time.`);
  }).catch((error) => {
    console.info(`Failed to set time. message: ${error.message}, code: ${error.code}`);
  });
} catch(e) {
  console.info(`Failed to set time. message: ${e.message}, code: ${e.code}`);
}

// callback方式的异步方法设置时间
// time对应的时间为2021-01-20 02:36:25
let time = 1611081385000;
try {
  systemDateTime.setTime(time, (error) => {
    if (error) {
      console.info(`Failed to set time. message: ${error.message}, code: ${error.code}`);
      return;
    }
    console.info(`Succeeded in setting time`);
  });
} catch(e) {
  console.info(`Failed to set time. message: ${e.message}, code: ${e.code}`);
}

// 导入模块
import systemTimer from '@ohos.systemTimer';

console.log("start");
var options:TimerOptions{   
   type:TIMER_TYPE_REALTIME,   
   repeat:false,   
   interval:Number.MAX_VALUE/2,   
}

console.log("create timer")   
let timerId = systemTimer.Timer(options)     
console.log("start timer")   
let startTimerRes = systemTimer.startTimer(timerId, 100000)   
console.log("stop timer")   
let stopTimerRes = systemTimer.stopTimer(timerId)   
console.log("destroy timer")   
let destroyTimerRes = systemTimer.destroyTimer(timerId)   
console.log('end');