System Boot Time Plugin

Harmony OS Next

System Boot Time Plugin

Retrieve the system boot time of HarmonyOS devices

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Usage

Import the plugin in your Flutter project:

import 'package:system_boot_time/system_boot_time.dart';

final seconds = await SystemBootTime().second();

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HarmonyOS Code Implementation

1. Get System Boot Time

// Get the system uptime in seconds since startup
second(): number {
  return Math.floor(
    systemDateTime.getUptime(systemDateTime.TimeType.STARTUP, false) / 1000
  );
}

2. Message Channel Setup

setup(binaryMessenger: BinaryMessenger, api: SystemBootTime | null): void {
  const channel = new BasicMessageChannel<Object>(
    binaryMessenger,
    "dev.flutter.pigeon.SystemBootTime.second",
    this.getCodec()
  );

  if (api != null) {
    channel.setMessageHandler({
      onMessage(msg: Object, reply: Reply<Object>): void {
        try {
          // Wrap the result in a map for serialization
          const wrapped: Record<string, unknown> = {
            result: api.second()
          };
          reply.reply(wrapped);
        } catch (exception) {
          // Return error details if an exception occurs
          const errorMap: Record<string, string> = {
            message: exception.message,
            code: exception.name,
            details: `Cause: ${exception.cause}, Stacktrace: ${exception.stack}`
          };
          reply.reply({ error: errorMap });
        }
      }
    });
  } else {
    channel.setMessageHandler(null);
  }
}

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Key Features

• Low Overhead: Retrieves boot time via system APIs without blocking the main thread.
• Type Safety: Returns a numeric value representing seconds since system startup.
• Error Handling: Provides detailed error messages for debugging.