SingletonService

Source	singleton-service

This service can be used to create Singleton services, that shares it reference everywhere. (Be aware: this will share services even between dapps that uses the same library! Some Ionic functionallities can have some problems, because runtime references are destroyed after an DApp was closed.).

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create

singletonService.create(SingeltonServiceClass, instance, init, updateOnCoreChange);

Creates an single references for services to handle one time service creations and value bindings.

Parameters

1. SingeltonServiceClass - any: Class object
2. instance - any: Current instance of an class.
3. init - Function: Function to run, if the service was created once
4. updateOnCoreChange - boolean: Run init function, if evan core gets updated

Example

@Injectable()
export class SampleService {
  /**
   * Create a singleton service instance. Start screen size watching. Prefill
   * dev ens variables
   */
  constructor(
    private platform: Platform,
    private singleton: SingletonService
  ) {
    return singleton.create(SampleService, this, () => {
      // doo initialization stuff
    });
  }
}