Video: Dab tsi yog kev siv R Java cov ntaub ntawv hauv Android Studio?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
R . java ua yog ib qho kev tsim cov chav kawm uas khaws cov ntaub ntawv hais txog cov peev txheej (xws li cov hlua, layouts, drawables, xim thiab lwm yam). Nws yeej ua rau kev sib txuas ntawm XML cov ntaub ntawv thiab Java . Cov Android SDK mus hla tag nrho cov peev txheej thiab khaws lawv txoj hauv kev R.
Ib yam li ntawd, cov ntaub ntawv R Java nyob qhov twg hauv Android Studio?
R . java ua yog generated ntaub ntawv los ntawm ADT los yog Android studio . Nws yuav nyob rau hauv appuildgeneratedsource r phau ntawv.
Ib yam li ntawd, dab tsi yog qhov khoom R hauv Android? 1 Teb. R yog chav kawm zoo li qub uas teev tag nrho koj cov peev txheej (feem ntau txhais hauv XML , tab sis txhua yam muaj nyob hauv koj daim nplaub tshev res). Kho kom raug: Raws li ntawm no: Android java ua chav kawm tsis tuaj yeem paub txog R cov ntaub ntawv ib qho ntawm koj cov chav kawm tej zaum yuav yog importing R.
Tsis tas li ntawd, lub npe ntawm daim nplaub tshev uas muaj cov ntaub ntawv R Java yog dab tsi?
Lub gen directory muaj R . java ua.
Dab tsi yog r ID hauv Android Studio?
R yog pej xeem zaum kawg hauv chav kawm Android uas extends Object class. Nws yog siv los txheeb xyuas txhua yam khoom ntawm Saib. Nrog chav kawm nested R . ib id cov ntaub ntawv tsim nyob rau hauv hauv programming nws kuj pib generated cov ntaub ntawv. Nws siv los xa mus rau UI tivthaiv.
Pom zoo:
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