Umsebenzi weasync usebenza njani kwi-Android?
Kwi-Android, i-AsyncTask (i-Asynchronous Task) isivumela ukuba siqhube umyalelo ngasemva kwaye emva koko sivumelanise kwakhona nomsonto wethu oyintloko. Olu didi luza kubhala ngaphezulu ubuncinane indlela enye okt doInBackground(Params) kwaye kaninzi iyakungahoyanga indlela yesibini kwiPostExecute(Isiphumo).
Uyenza njani indlela ye-asynchronous kwi-Android?
Ukuqala i-AsyncTask le snippet ilandelayo kufuneka ibekho kwiklasi yeMainActivity : MyTask myTask = iMyTask entsha(); myTask. phumeza (); Kule snippet ingentla sisebenzise isampuli yegama leklasi eyandisa i-AsyncTask kunye nendlela yokuphumeza isetyenziselwa ukuqalisa umsonto ongasemva.
Ndazi njani ukuba umsebenzi we-async uyasebenza?
Sebenzisa getStatus () ukufumana ubume beAsyncTask yakho . Ukuba ubume yiAsyncTask. Ubume. UKUBALEKA emva koko umsebenzi wakho uyasebenza.
Umsebenzi weasync usebenza njani ngaphakathi?
Esona sizathu sikhulu sokusebenzisa i-Async kukunikezela umsebenzi ngasemva. Iyenza isebenzisa abenzi bokufa: Abaphumeleli yiJava APIs, equlathe umgca apho imisebenzi emitsha ifakwe khona, kwaye inenani elimisiweyo lemisonto ukubaleka. Imisonto ijika ngokujika ilandelelanisa imisebenzi emgceni kwaye iyiqhube.
Yintoni umsebenzi we-async?
Umsebenzi we-asynchronous uchazwa lubalo olwenzeka kumsonto ongasemva kwaye isiphumo sawo sipapashwa kumsonto we-UI. Umsebenzi ongahambelaniyo uchazwa ziindidi ezi-3 eziqhelekileyo, ezibizwa ngokuba ziiParams, iNkqubela neSiphumo, kunye namanyathelo ama-4, abizwa ngokuba OnPreExecute , doInBackground , onProgressUpdate and onPostExecute.
Ngaba i-Android yenza imvelaphi?
doInBackground(Params) − Kule ndlela kufuneka senze umsebenzi ongasemva kumsonto ongasemva. Ukusebenza kule ndlela akufanele kuchukumise kuyo nayiphi na imisebenzi ephambili okanye amaqhekeza. kwiProgressUpdate(Inkqubela…) − Ngelixa usenza umsebenzi ongasemva, ukuba ufuna ukuhlaziya ulwazi oluthile kwi-UI, sinokusebenzisa le ndlela.
Yintoni umsebenzi kwi-Android?
Umsebenzi umele isikrini esinye esinojongano lomsebenzisi njengefestile okanye isakhelo seJava. Umsebenzi we-Android yinxalenye yeklasi ye-ContextThemeWrapper. Ukuba usebenze ngoC, C++ okanye ulwimi lwenkqubo yeJava ngoko kufuneka ubone ukuba inkqubo yakho iqala kumsebenzi ongundoqo ().
Ziziphi iindidi ezimbini eziphambili zentambo kwi-Android?
Ukufaka umtya kwi-Android
- AsyncTask. I-AsyncTask yeyona nto isisiseko ye-Android yokuthunga. …
- Abalayishi. Abalayishi sisisombululo sengxaki ekhankanywe ngasentla. …
- Inkonzo. …
- IntentService. …
- Indlela yoku-1: AsyncTask okanye abalayishi. …
- Ukhetho 2: Inkonzo. …
- Indlela yesi-3: IntentService. …
- Ukhetho loku-1: Inkonzo okanye Inkonzo yeNjongo.
Yintoni async umsebenzi umlayishi kwi Android?
Sebenzisa iklasi ye-AsyncTask ukuphumeza i-asynchronous, umsebenzi osebenza ixesha elide kumsonto wabasebenzi. I-AsyncTask ikuvumela ukuba wenze imisebenzi yangasemva kumsonto wabasebenzi kwaye upapashe iziphumo kwintambo ye-UI ngaphandle kokufuna ukukhohlisa imisonto okanye abaphathi.
Ndazi njani xa i-AsyncTask yam ye-Android yenziwe?
getStatus () ijonga ukuba iAsyncTask ilindile, iyasebenza, okanye igqityiwe.
Ndiyimisa njani i-AsyncTask?
1. fowunela Rhoxisa () indlela ye-AsyncTask ukusuka apho ufuna ukumisa uphumezo, inokuba isekwe kunqakrazo lweqhosha. AsyncTask. rhoxisa ( yinyani);
Which class will execute task asynchronously with your service?
Iinkonzo zeNjongo zikwayilelwe ngokukodwa ukuphatha imvelaphi (ehlala ixesha elide) imisebenzi kwaye indlela ye-onHandleIntent sele ibhengezwe kumsonto ongasemva ukwenzela wena. I-AsyncTask yiklasi ethi, njengoko igama layo lisitsho, yenze umsebenzi ngokungahambelaniyo.
Kwenzeka ntoni ukuba sibiza Phumeza () ngaphezu kwesihlandlo esinye kumsebenzi we-async?
Nangona kungafuneki ukuba ikhankanyiwe apha, umntu kufuneka aqonde ukuba i-Android SDK inguqulo ye-Honeycomb, ukuba uqhuba ngaphezu kwe-AsyncTask enye ngaxeshanye, ngokwenene ziqhuba ngokulandelelana. Ukuba ufuna ukuziqhuba ngokuhambelanayo, sebenzisa u-ExecutorOnExecutor endaweni yoko. Yenza nje umnxeba omtsha njenge-asyncTask entsha ().
Ndingasebenzisa ntoni endaweni ye-AsyncTask Android?
I-Futuroid lithala leencwadi le-Android elivumela ukuqhuba imisebenzi engahambelaniyo kunye nokuncamathelisa ukufowunelwa ngokubulela kwi-syntax efanelekileyo. Inika enye indlela kwiklasi ye-Android AsyncTask.