\uc548\ub4dc\ub85c\uc774\ub4dc \uc571 \uac1c\ubc1c\uc740 \uc2dc\uac04\uc774 \uc9c0\ub0a8\uc5d0 \ub530\ub77c \uacc4\uc18d \uc9c4\ud654\ud574 \uc654\uc73c\uba70, \ucd5c\uadfc \uba87 \ub144\uac04 \ucf54\ud2c0\ub9b0\uc740 \uac1c\ubc1c\uc790\ub4e4 \uc0ac\uc774\uc5d0\uc11c \uac01\uad11\ubc1b\ub294 \uc5b8\uc5b4\ub85c \uc790\ub9ac\uc7a1\uc558\uc2b5\ub2c8\ub2e4. \ucf54\ud2c0\ub9b0\uc758 \uac04\uacb0\ud558\uace0 \ud604\ub300\uc801\uc778 \ubb38\ubc95\uc740 \uc548\ub4dc\ub85c\uc774\ub4dc \uac1c\ubc1c\uc744 \ud55c\uce35 \ub354 \uc27d\uac8c \ub9cc\ub4e4\uc5b4 \uc90d\ub2c8\ub2e4. \ud558\uc9c0\ub9cc, \ucf54\ud2c0\ub9b0\uc744 \uc81c\ub300\ub85c \ud65c\uc6a9\ud558\uae30 \uc704\ud574\uc11c\ub294 \uc548\ub4dc\ub85c\uc774\ub4dc \uc571 \uac1c\ubc1c\uc744 \uc704\ud55c \ub2e4\uc591\ud55c \ub77c\uc774\ube0c\ub7ec\ub9ac\uc640 \ub3c4\uad6c\ub97c \uc774\ud574\ud558\ub294 \uac83\uc774 \uc911\uc694\ud569\ub2c8\ub2e4. \uc774\ubc88 \uac15\uc88c\uc5d0\uc11c\ub294 \uc548\ub4dc\ub85c\uc774\ub4dc \uc81c\ud2b8\ud329(Android Jetpack)<\/strong>\uacfc AndroidX<\/strong>\uc5d0 \ub300\ud574 \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n \uc548\ub4dc\ub85c\uc774\ub4dc \uc81c\ud2b8\ud329\uc740 \uc548\ub4dc\ub85c\uc774\ub4dc \uc571 \uac1c\ubc1c\uc5d0 \ud544\uc694\ud55c \ub2e4\uc591\ud55c \uad6c\uc131 \uc694\uc18c\ub97c \uc9d1\ud569\uc801\uc73c\ub85c \uc81c\uacf5\ud558\ub294 \ub77c\uc774\ube0c\ub7ec\ub9ac\uc774\ub2e4. \uc774 \ub77c\uc774\ube0c\ub7ec\ub9ac\ub294 \uc571 \uad6c\uc870\ub97c \ub3d5\uace0, \uc0dd\uba85\uc8fc\uae30 \uad00\ub9ac\ub97c \uc27d\uac8c \ub9cc\ub4e4\uc5b4 \uc8fc\uba70, \ub370\uc774\ud130 \uc800\uc7a5 \ubc0f UI \uad6c\uc131\uc5d0 \ud544\uc694\ud55c \uc5ec\ub7ec \ub3c4\uad6c\ub4e4\uc744 \ud1b5\ud569\ud558\uc5ec \uc81c\uacf5\ud569\ub2c8\ub2e4. \uc548\ub4dc\ub85c\uc774\ub4dc \uc81c\ud2b8\ud329\uc740 \ud06c\uac8c \ub2e4\uc74c\uacfc \uac19\uc740 \uc138 \uac00\uc9c0 \uc8fc\uc694 \uad6c\uc131 \uc694\uc18c\ub85c \ub098\ub20c \uc218 \uc788\uc2b5\ub2c8\ub2e4:<\/p>\n \uc544\ud0a4\ud14d\ucc98 \ucef4\ud3ec\ub10c\ud2b8\ub294 MVVM(Model-View-ViewModel) \ud328\ud134\uc744 \ub530\ub974\ub294 \uc571 \uac1c\ubc1c\uc744 \uc704\ud574 \uc124\uacc4\ub418\uc5c8\uc2b5\ub2c8\ub2e4. \uc774\ub4e4 \ucef4\ud3ec\ub10c\ud2b8\ub294 \uc0dd\uba85\uc8fc\uae30 \uc778\uc2dd, \ub370\uc774\ud130 \uad00\ucc30, \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uc791\uc5c5 \ub4f1 \ub2e4\uc591\ud55c \uae30\ub2a5\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/p>\n ViewModel\uc740 UI \uad00\ub828 \ub370\uc774\ud130\ub97c \uc800\uc7a5\ud558\uace0 \uad00\ub9ac\ud558\ub294 \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4. ViewModel\uc740 Activity\ub098 Fragment\uc758 \uc0dd\uba85\uc8fc\uae30\uc640 \uad00\uacc4\uc5c6\uc774 \ub370\uc774\ud130\ub97c \uc720\uc9c0\ud558\uae30 \ub54c\ubb38\uc5d0, \ud654\uba74 \ud68c\uc804\uc774\ub098 \uae30\ud0c0 \uc0dd\uba85\uc8fc\uae30 \ubcc0\ud654\uac00 \ubc1c\uc0dd\ud560 \ub54c \uc720\uc6a9\ud569\ub2c8\ub2e4.<\/p>\n LiveData\ub294 \uc0dd\uba85\uc8fc\uae30\uc5d0 \ub9de\ucdb0 \ub370\uc774\ud130\ub97c \uad00\ucc30\ud560 \uc218 \uc788\uac8c \ud574\uc8fc\ub294 \uac1d\uccb4\uc785\ub2c8\ub2e4. UI\ub294 LiveData\ub97c \uad6c\ub3c5\ud558\uace0, \ub370\uc774\ud130\uac00 \ubcc0\uacbd\ub418\uba74 \uc790\ub3d9\uc73c\ub85c \uc5c5\ub370\uc774\ud2b8\ub429\ub2c8\ub2e4.<\/p>\n Room\uc740 SQLite \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uc791\uc5c5\uc744 \uc27d\uac8c \ud560 \uc218 \uc788\ub3c4\ub85d \ud574\uc8fc\ub294 ORM \ub77c\uc774\ube0c\ub7ec\ub9ac\uc785\ub2c8\ub2e4. Room\uc744 \uc0ac\uc6a9\ud558\uba74 SQL \ucffc\ub9ac\ub97c \uc791\uc131\ud558\uc9c0 \uc54a\uace0\ub3c4 \ub370\uc774\ud130\ub97c \uc0bd\uc785, \uc5c5\ub370\uc774\ud2b8, \uc0ad\uc81c\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n UI \ucef4\ud3ec\ub10c\ud2b8\ub294 \uc0ac\uc6a9\uc790 \uc778\ud130\ud398\uc774\uc2a4\uc758 \ud750\ub984\uacfc \ud0d0\uc0c9\uc744 \uad00\ub9ac\ud558\ub294\ub370 \uc911\uc694\ud55c \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4. Navigation Component\ub294 \ub2e4\uc591\ud55c \ud654\uba74\uc744 \uc190\uc27d\uac8c \uc5f0\uacb0\ud560 \uc218 \uc788\uac8c \ud574\uc8fc\uace0, Fragment\uc640 ViewPager\ub97c \ud1b5\ud574 \uc0ac\uc6a9\uc790 \uacbd\ud5d8\uc744 \ud5a5\uc0c1\uc2dc\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n Navigation Component\ub294 \uc571\uc758 \ud0d0\uc0c9\uc744 \uc27d\uac8c \uad6c\ud604\ud558\ub3c4\ub85d \ub3d5\ub294 \ub77c\uc774\ube0c\ub7ec\ub9ac\uc785\ub2c8\ub2e4. Navigation \uadf8\ub798\ud504\ub97c \uc815\uc758\ud558\uace0, \uc5ec\ub7ec \ud654\uba74 \uac04\uc758 \uc804\ud658\uc744 \uad00\ub9ac\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n Fragment\ub294 \uc0ac\uc6a9\uc790 \uc778\ud130\ud398\uc774\uc2a4\uc758 \uc77c\ubd80\ub97c \ucea1\uc290\ud654\ud558\uc5ec \uc7ac\uc0ac\uc6a9\ud560 \uc218 \uc788\uac8c \ud558\ub294 \uad6c\uc131 \uc694\uc18c\uc785\ub2c8\ub2e4. Fragment\ub294 Activity\uc640 \ubd84\ub9ac\ub418\uc5b4 \uc0dd\uba85\uc8fc\uae30\ub97c \uad00\ub9ac\ud569\ub2c8\ub2e4.<\/p>\n ViewPager\ub294 \uc5ec\ub7ec Fragment\ub97c \uc2ac\ub77c\uc774\ub4dc\ud558\uc5ec \ud0d0\uc0c9\ud560 \uc218 \uc788\ub3c4\ub85d \ub3c4\uc640\uc8fc\ub294 \uad6c\uc131 \uc694\uc18c\uc785\ub2c8\ub2e4. PagerAdapter\ub97c \ud1b5\ud574 \ud398\uc774\uc9c0\ub97c \uad00\ub9ac\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n \ud589\uc704 \ucef4\ud3ec\ub10c\ud2b8\ub294 \ubc31\uadf8\ub77c\uc6b4\ub4dc \uc791\uc5c5, \ub370\uc774\ud130 \ub85c\ub529 \ub4f1\uacfc \uac19\uc740 \ube44\uc988\ub2c8\uc2a4 \ub85c\uc9c1\uc744 \uad00\ub9ac\ud558\ub294 \ub370 \ub3c4\uc6c0\uc744 \uc8fc\ub294 \ucef4\ud3ec\ub10c\ud2b8\uc785\ub2c8\ub2e4.<\/p>\n WorkManager\ub294 \ud544\uc694\uc5d0 \ub530\ub77c \ubc31\uadf8\ub77c\uc6b4\ub4dc\uc5d0\uc11c \uc791\uc5c5\uc744 \uc218\ud589\ud560 \uc218 \uc788\ub3c4\ub85d \ud574\uc8fc\ub294 \ud504\ub808\uc784\uc6cc\ud06c\uc785\ub2c8\ub2e4. \uc774\ub97c \ud1b5\ud574 \uc791\uc5c5\uc758 \uc9c0\uc5f0\uc774\ub098 \uc815\uae30\uc801\uc778 \uc218\ud589\uc774 \uac00\ub2a5\ud558\uac8c \ub429\ub2c8\ub2e4.<\/p>\n AndroidX\ub294 \uc548\ub4dc\ub85c\uc774\ub4dc\uc758 \uc0c8\ub85c\uc6b4 \ub77c\uc774\ube0c\ub7ec\ub9ac \ud328\ud0a4\uc9c0\ub97c \ud3ec\ud568\ud558\ub294 \ub77c\uc774\ube0c\ub7ec\ub9ac\uc785\ub2c8\ub2e4. \uad6c\uae00\uc740 AndroidX\ub97c \ud1b5\ud574 \ub2e4\uc591\ud55c \ub77c\uc774\ube0c\ub7ec\ub9ac\ub97c \ubcf4\ub2e4 \uc190\uc27d\uac8c \uad00\ub9ac\ud558\uace0 \uc5c5\ub370\uc774\ud2b8\ud560 \uc218 \uc788\ub3c4\ub85d \uac1c\uc120\ud558\uc600\uc2b5\ub2c8\ub2e4. AndroidX\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \ud2b9\uc9d5\uc774 \uc788\uc2b5\ub2c8\ub2e4:<\/p>\n AndroidX\ub294 \ub2e4\uc591\ud55c \uad6c\uc131 \uc694\uc18c\ub85c \uc774\ub8e8\uc5b4\uc838 \uc788\uc73c\uba70, \uadf8 \uc911 \uc77c\ubd80\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n \uc544\ub798\ub294 AndroidX\uc758 RecyclerView\ub97c \uc0ac\uc6a9\ud558\uc5ec \ub9ac\uc2a4\ud2b8\ub97c \ud45c\uc2dc\ud558\ub294 \uac04\ub2e8\ud55c \uc608\uc81c\uc785\ub2c8\ub2e4.<\/p>\n \uc548\ub4dc\ub85c\uc774\ub4dc \uc81c\ud2b8\ud329\uacfc AndroidX\ub294 \uc548\ub4dc\ub85c\uc774\ub4dc \uc571 \uac1c\ubc1c\uc5d0 \uc788\uc5b4 \ud544\uc218\uc801\uc778 \uc694\uc18c\uc774\uba70, \uc774\ub97c \ud1b5\ud574 \uac1c\ubc1c\uc790\ub294 \ub354 \ub098\uc740 \ud488\uc9c8\uc758 \uc571\uc744 \ube60\ub974\uac8c \uad6c\ucd95\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ubc88 \uac15\uc88c\ub97c \ud1b5\ud574 \uc548\ub4dc\ub85c\uc774\ub4dc \uc81c\ud2b8\ud329\uc758 \ub2e4\uc591\ud55c \uad6c\uc131 \uc694\uc18c\uc640 AndroidX\uc758 \uc911\uc694\uc131\uc744 \uc774\ud574\ud558\ub294 \ub370 \ub3c4\uc6c0\uc774 \ub418\uc5c8\uae30\ub97c \ubc14\ub78d\ub2c8\ub2e4. \uc55e\uc73c\ub85c \ub354 \uc2ec\ub3c4 \uc788\ub294 \ucf54\ud2c0\ub9b0 \uc548\ub4dc\ub85c\uc774\ub4dc \uc571 \uac1c\ubc1c \uac15\uc88c\ub85c \ub3cc\uc544\uc624\uaca0\uc2b5\ub2c8\ub2e4!<\/p>\n<\/article>\n <\/body><\/p>\n","protected":false},"excerpt":{"rendered":"1. \uc548\ub4dc\ub85c\uc774\ub4dc \uc81c\ud2b8\ud329\uc774\ub780?<\/h2>\n
\n
1.1 \uc544\ud0a4\ud14d\ucc98 \ucef4\ud3ec\ub10c\ud2b8<\/h3>\n
1.1.1 ViewModel<\/h4>\n
class MainViewModel : ViewModel() {\n private val _text = MutableLiveData1.1.2 LiveData<\/h4>\n
viewModel.text.observe(this, Observer { newText ->\n textView.text = newText\n})\n<\/code><\/pre>\n1.1.3 Room<\/h4>\n
@Entity(tableName = \"users\")\ndata class User(\n @PrimaryKey val id: Int,\n val name: String\n)\n\n@Dao\ninterface UserDao {\n @Query(\"SELECT * FROM users\")\n fun getAllUsers(): List1.2 UI \ucef4\ud3ec\ub10c\ud2b8<\/h3>\n
1.2.1 Navigation Component<\/h4>\n
val navController = findNavController(R.id.nav_host_fragment)\nnavController.navigate(R.id.action_firstFragment_to_secondFragment)\n<\/code><\/pre>\n1.2.2 Fragment<\/h4>\n
1.2.3 ViewPager<\/h4>\n
class ViewPagerAdapter(fm: FragmentManager) : FragmentPagerAdapter(fm) {\n override fun getItem(position: Int): Fragment {\n return when (position) {\n 0 -> FirstFragment()\n 1 -> SecondFragment()\n else -> FirstFragment()\n }\n }\n\n override fun getCount(): Int {\n return 2\n }\n}\n<\/code><\/pre>\n1.3 \ud589\uc704 \ucef4\ud3ec\ub10c\ud2b8<\/h3>\n
1.3.1 WorkManager<\/h4>\n
val workRequest = OneTimeWorkRequestBuilder2. AndroidX\ub780?<\/h2>\n
\n
2.1 AndroidX \uad6c\uc131 \uc694\uc18c<\/h3>\n
\n
2.2 AndroidX \uc0ac\uc6a9 \uc608\uc81c<\/h3>\n
2.2.1 build.gradle \uc124\uc815<\/h4>\n
dependencies {\n implementation \"androidx.recyclerview:recyclerview:1.2.1\"\n}\n<\/code><\/pre>\n2.2.2 RecyclerView \uc5b4\ub311\ud130<\/h4>\n
class MyAdapter(private val items: List2.2.3 RecyclerView \uc124\uc815<\/h4>\n
val recyclerView = findViewById3. \uacb0\ub860<\/h2>\n