Uma uhlelo lwethulwa ku-Android, ludala umucu wokuqala wokusebenzisa, owaziwa ngokuthi uchungechunge "oluyinhloko". Uchungechunge oluyinhloko lunesibopho sokuthumela imicimbi kumawijethi okusetshenziswa kubonwa afanelekile kanye nokuxhumana nezingxenye ezisuka kukhithi yamathuluzi ye-Android UI.
Iyini intambo ku-Android?
Uchungechunge luwuchungechunge lokwenziwa kuhlelo. I-Java Virtual Machine ivumela uhlelo lokusebenza ukuthi lube nemicu eminingi yokusebenza esebenza ngesikhathi esisodwa. Wonke umucu unokubaluleka. Imicu enokubaluleka okuphezulu isetshenziswa ngokukhetha imicu enokubaluleka okuphansi.
Kungani sisebenzisa izintambo?
Ngegama elilodwa, sisebenzisa i-Threads ukwenza uhlelo lwe-Java lusheshe ngokwenza izinto eziningi ngesikhathi esisodwa. Ngamagama obuchwepheshe, i-Thread ikusiza ukuthi ufinyelele ukufana ezinhlelweni ze-Java. … Ngokusebenzisa imicu eminingi ku-Java ungakwazi ukwenza umsebenzi ngamunye wale misebenzi ngokuzimela.
Iyini intambo ku-Android ngesibonelo?
Uchungechunge luyiyunithi efanayo yokusebenza. Ine-call stack yayo yezindlela ezicelwayo, izimpikiswano zazo nokuguquguquka kwendawo. Isenzakalo ngasinye somshini obonakalayo sinochungechunge okungenani olulodwa oluyinhloko olusebenzayo lapho luqalwa; ngokuvamile, kukhona ezinye eziningana ukugcinwa endlini.
Yini intambo ephephile ku-Android?
Ukusebenzisa kahle i-Handler : http://developer.android.com/reference/android/os/Handler.html iphephile ngomucu. … Ukumaka indlela evunyelanisiwe kuyindlela yokwenza ukuthi intambo iphephe — ngokuyisisekelo ikwenza kube uchungechunge olulodwa kuphela olungaba endleleni nganoma yisiphi isikhathi.
Mingaki imicu engaphathwa yi-Android?
Lokho kuyizintambo ezingu-8 kukho konke okwenziwa yifoni-zonke izici ze-android, ukuthumela umbhalo, ukuphathwa kwememori, i-Java, nanoma yiziphi ezinye izinhlelo zokusebenza ezisebenzayo. Uthi ikhawulelwe ku-128, kodwa empeleni ilinganiselwe ngokusebenza kokuncane kakhulu ongakusebenzisa kunalokho.
Isebenza kanjani imicu?
Uchungechunge luyiyunithi yokwenza ngaphakathi kwenqubo. … Uchungechunge ngalunye ohlelweni lwabelana ngaleyo nkumbulo nezisetshenziswa. Ezinqubweni ezinomucu owodwa, inqubo iqukethe intambo eyodwa. Inqubo kanye nentambo kuyafana, futhi kukhona into eyodwa kuphela eyenzekayo.
Yiziphi izinhlobo zezintambo?
Izinhlobo Eziyisithupha Ezivamile Zezintambo
- UN / UNF.
- I-NPT / NPTF.
- I-BSPP (BSP, parallel)
- I-BSPT (BSP, tapered)
- i-metric parallel.
- i-metric tapered.
Kufanele usebenzise nini i-multithreading?
Kufanele usebenzise i-multithreading uma ufuna ukwenza imisebenzi esindayo ngaphandle “kokuvimba” ukugeleza. Isibonelo kuma-UI lapho wenza khona ukucubungula okusindayo kuchungechunge olungemuva kodwa i-UI isasebenza. I-Multithreading yindlela yokwethula ukufana ohlelweni lwakho.
Iyini intambo nezinhlobo zayo?
Uchungechunge luwukusakaza okulandelanayo okukodwa ngaphakathi kwenqubo. Imicu inezinto ezifanayo nezenqubo ngakho-ke ibizwa ngokuthi izinqubo zesisindo esincane. Imicu ilandelwa ngokulandelana kodwa inikeza umbono ongewona owenziwe ngokuhambisana.
Yiziphi izinhlobo ezimbili eziyinhloko zentambo ku-Android?
Uchungechunge ku-Android
- I-AsyncTask. I-AsyncTask iyingxenye eyisisekelo ye-Android yokulutha. …
- Abalayishi. Izilayishi ziyisixazululo senkinga eshiwo ngenhla. …
- Isevisi. …
- I-IntentService. …
- Inketho 1: I-AsyncTask noma izilayishi. …
- Inketho 2: Isevisi. …
- Inketho 3: I-IntentService. …
- Inketho 1: Isevisi noma Isevisi Yenhloso.
Uyini umehluko phakathi kwensiza nentambo ku-Android?
Isevisi : ingxenye ye-android eyenza ukusebenza okude ngemuva, ikakhulukazi ngaphandle kokuba ne-UI. Uchungechunge : isici sezinga le-OS esikuvumela ukuthi wenze umsebenzi othile ngemuva. Nakuba ngokomqondo kokubili kubukeka kufana kunomehluko othile obalulekile.
Iyini intambo yangemuva ku-Android?
Kwenzenjani? Ukucutshungulwa kwengemuva ku-Android kubhekisela ekwenzeni imisebenzi emicu ehlukene kune-Main Thread, eyaziwa nangokuthi i-UI Thread, lapho ukubuka kukhuphuka kakhulu nalapho umsebenzisi ahlanganyela khona nohlelo lwethu lokusebenza.
Ingabe intambo ye-HashMap iphephile?
I-HashMap ayivunyelanisiwe. Ayiphephile futhi ayikwazi ukwabelwa phakathi kwemicu eminingi ngaphandle kwekhodi yokuvumelanisa efanele kuyilapho i-Hashtable ivumelaniswa. … I-HashMap ivumela ukhiye owodwa ongenalutho kanye namanani amaningi angenalutho kuyilapho i-Hashtable ingavumeli noma yimuphi ukhiye ongenalutho noma inani.
Ingabe intambo ye-StringBuffer iphephile?
I-StringBuffer ivumelanisiwe ngakho-ke intambo iphephile.
I-StringBuilder iyahambisana ne-StringBuffer API kodwa ayinaso isiqinisekiso sokuvumelanisa.
Ingabe intambo ye-ArrayList iphephile?
Noma iyiphi indlela ethinta okuqukethwe kweVector iphephile ngochungechunge. I-ArrayList, ngakolunye uhlangothi, ayivumelanisiwe, okwenza ukuthi, ngakho-ke, ingaphephile. Unalowo mehluko engqondweni, ukusebenzisa ukuvumelanisa kuzoletha ukushaya kokusebenza. Ngakho-ke uma ungadingi iqoqo elivikelekile ngochungechunge, sebenzisa i-ArrayList.