QualityService constructor

QualityService({
  1. ConnectivityService? connectivityService,
  2. PingService? pingService,
  3. DnsService? dnsService,
  4. SpeedTestService? speedTestService,
})

构造 QualityService / Creates a QualityService.

Implementation

QualityService({
  ConnectivityService? connectivityService,
  PingService? pingService,
  DnsService? dnsService,
  SpeedTestService? speedTestService,
}) : connectivity = connectivityService ?? ConnectivityService(),
     ping = pingService ?? const PingService(),
     dns = dnsService ?? const DnsService(),
     speedTest = speedTestService ?? const SpeedTestService();