Timing and Time

/base/time/time_service
├── etc                      # Process configuration files
├── figures                  # Architecture diagram
├── framework/js/napi        # the js interface resolves to the napi interface
├── interfaces/inner_api     # external interface code provided by the component
├── services                 # time service realization
│   └── sa_profile           # module contains the config files of system services and processes
├── test                     # unit test of interface
└── utils                    # module contains log printing and constants for ordered commonEvent

// Import the module.
import systemTime from '@ohos.systemTime';

// Set the system time asynchronously with a Promise.
var time = 1611081385000;   
systemTime.setTime(time).then((value) => {        
    console.log(`success to systemTime.setTime: ${value}`);   
}).catch((err) => {        
    console.error(`failed to systemTime.setTime because ${err.message}`)  
});

// Set the system time asynchronously with a callback.   
var time = 1611081385000;   
systemTime.setTime(time, (err, value) => {   
    if (err) {        
        console.error(`failed to systemTime.setTime because ${err.message}`);   
        return;   
    }    
    console.log(`success to systemTime.setTime: ${value}`);   
});

// Import the module 
import systemTimer from '@ohos.systemTimer';

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

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');