swift - OnNext not called when disposing the result of Observable.subscribe -

i'm subscribing observable, if i'm adding disposable disposebag in class, onnext block never called.

here code :

@objc class applemusicplaylistmanager: nsobject {      let disposebag = disposebag()     let playlists: [mpmediaplaylist] = []      func importapplemusicplaylist() {         playlists.foreach { appleplaylist in             appleplaylist.getitunesstoretracks().subscribe(onnext: { tracks in                // doing things here             }).adddisposableto(disposebag)         }     } } 

where getitunesstoretracks return rxswift.observable<[soundsmusicitunesstore]> , whole thing used applemusicplaylistmanager().importapplemusicplaylist()

it works expected.

current logic disposebag points out, observables not disposed of until disposebag alive.

in case - applemusicplaylistmanager().importapplemusicplaylist(), create manager , call async requests, while manager deallocating. observables deallocating well.

in order work correctly, either have set manager shared , use method: applemusicplaylistmanager.shared.importapplemusicplaylist() or save manager property in order not deallocate immediately.