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αʔόʔαΠυΤϯδχΞ͕ "OESPJEೖ໳ͨ͠࿩

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ϞόΠϧΞϓϦαʔϏε෦ ୲౰ϞόΠϧΞϓϦͷόοΫΤϯυ"1*
 "84؀ڥߏஙɺӡ༻

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ࠓ೔࿩͢͜ͱ w ͳͥαʔόʔαΠυͷਓ͕"OESPJE w ษڧํ๏ w ࢓ࣄͰ࢖ΘΕ͍ͯΔίʔυͱͷࠩ w σόοΫʹ࢖͑Δπʔϧ

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ͳͥαʔόʔαΠυͷ ਓ͕"OESPJE

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ओͳཧ༝ w Ͱ͖Δ͜ͱΛ૿΍ͯ͠௵͕͖͘͠Α͏ʹͨ͠ ͍ɹ w Ұ؏ͯ͠ཧղ͓͖͍ͯͨ͠

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N#BBT αʔόʔ N#BBTͷొ৔ ೝূ Ӭଓ 1VTI ͦͷଞ αʔόʔ ೝূ Ӭଓ 1VTI ͦͷଞ ؆୯ͰҰൠతͳϢʔεέʔεͳΒ N#BBTͷΈͰ׬݁ͯ͠͠·͏͜ͱ΋ ొ৔લ ొ৔ޙ

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(&5OFXT (&5OPUJpDBUJPO ҰൃͰͱΕΔΑ͏ ʹͯ͘͠Εͳ͍͔ ͳɻɻɻ (&5JOGP Ұ؏ͯ͠೺Ѳ͓͖͍ͯͨ͠ ࣗ෼Ͱମݧ͠ͳ͍ͱΘ͔Βͳ͍͜ͱ͕͋Δ

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ษڧํ๏

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ษڧํ๏ w ·ͣ౤ࢿ w ॻ੶ w άάͬͯࣸܦ

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ͱΓ͋͑ͣങͬͨ ສ

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࠷ॳʹങͬͨຊ

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࣍ʹങͬͨຊ

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ॻ੶ class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { // ToastΛදࣔ } class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { // ը໘ͷΩϟϓγϣϯΛมߋ } class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { // μΠΞϩάΛදࣔ }

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άάͬͯࣸܦ class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { // μΠΞϩάΛදࣔ } class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { // μΠΞϩάΛදࣔ } class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { // μΠΞϩάΛදࣔ }

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override fun onCreate(savedInstanceState: Bundle?) { // ॲཧ1.. // ॲཧ2.. // ॲཧ3.. // ॲཧ4.. // ॲཧ5.. PO$SFBUFʹू·Δॲཧ ͍͍͠Ε͵ෆ҆

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͔ͪ͘ʹ͍͍ݟຊ͕͋ͬͨ

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࢓ࣄͰ࢖ΘΕ͍ͯΔ ίʔυͱͷࠩ

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ࠩ w ΞʔΩςΫνϟ w ඇಉظ w ӬଓԽ w %FCVH5PPMT

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ΞʔΩςΫνϟ

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୅දతͳΞʔΩςΫνϟ w .71 w .77.

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.71 .PEFM7JFX1SFTFOUFS

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.71 .PEFM7JFX1SFTFOUFS 1SFTFOUFS ͕௚઀7JFXͷࢀর Λ΋ͭ

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.77. .PEFM7JFX7JFX.PEFM

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.77. .PEFM7JFX7JFX.PEFM ૒ํ޲ͷ%"5" #*/%*/(

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୅දతͳΞʔΩςΫνϟ w .71 w J04ͱΞʔΩςΫνϟΛ߹Θͤ΍͍͢ w .77. w %BUB#JOEJOH͋ΔͷͰΑΓ؆ܿʹॻ͚Δ͕ίʔ υ͕ࣗಈੜ੒͞ΕΔͷͰͱ͖ͬͭʹ͍͘͜ͱ΋͋ Δ

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୅දతͳΞʔΩςΫνϟ w .71 w .77. ࠓճ͸ͬͪ͜

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.77. .PEFM7JFX7JFX.PEFM

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.77.Ͱ࢖ΘΕΔ ެࣜϥΠϒϥϦ w 7JFX.PEFM w %BUB#JOEJOH w -JWF%BUB

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7JFX.PEFM

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7JFX.PEFM viewModel = ViewModelProviders.of(this).get(ViewModel::class.java) viewModel = ViewModelProviders.of(activity!!).get(ViewModel::class.java) .BJO"DUJWJUZLU .BJO'SBHNFOULU "DUJWJUZ 'SBHNFOU 7JFX .PEFM "DUJWJUZͷϥΠϑαΠΫϧͷ7JFX.PEFMΛ 'SBHNFOUͰڞ༗Ͱ͖Δ

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%BUB#JOEJOH class ViewModel() { val body = MutableLiveData() fun submit() { // ॲཧ } }

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%BUB#JOEJOH class ViewModel() { val body = MutableLiveData() fun submit() { // ॲཧ } }

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%BUB#JOEJOH class ViewModel() { val body = MutableLiveData() fun submit() { // ॲཧ } }

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%BUB#JOEJOH class ViewModel() { val body = MutableLiveData() fun submit() { // ॲཧ } }

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%BUB#JOEJOH class ViewModel() { val body = MutableLiveData() fun submit() { // ॲཧ } }

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-JWF%BUB 7JFX 7JFX.PEFM -JWF%BUB 3FQPTJUPSZ 4PNF 1SPDFTT ஋ʹมߋ͕͋Ε͹௨஌Λड͚ 7JFXΛมߋ Ϣʔβʔͷૢ࡞Ͱ มߋ͕͋Ε͹ઃఆ ஋Ληοτ มߋ͕͋Ε͹௨஌

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-JWF%BUB class ViewModel() { val body = MutableLiveData() fun submit() { // ॲཧ } }

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-JWF%BUB viewModel.allWords.observe(this, Observer { txt -> // มߋ௨஌࣌ͷॲཧ })

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.77.ಋೖޮՌ w pOE7JFX#Z*Eͷ๾໓ w WJFXΛૢ࡞͢Δίʔυͷ๾໓ w PO$SFBUF͔ΒϩδοΫΛ੾Γ཭ͤͨ

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Ӭଓॲཧ

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Ӭଓॲཧ w ϝϞϦʹ࣋ͬͯΔ͚ͩͩͱͳΜ͔͠ΒͷλΠ ϛϯάͰ͙͢ফ͑Δ ౰વ w ඪ४ͷ42-JUFͷૢ࡞ϥΠϒϥϦ͕͋Δ͚Ͳ ৑௕

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3PPN @Entity(tableName = "word_table") data class Word( @PrimaryKey @NonNull @ColumnInfo(name = "word") var mWord: String )

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3PPN @Dao interface WordDao { @Insert fun insert(word: Word) @Query("DELETE FROM word_table") fun deleteAll() @Query("SELECT * FROM word_table ORDER BY word ASC") fun allWords(): LiveData> }

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஫ҙ఺ w LPUMJOͩͱLBQUΛ࢖Θͳ͍ͱ࣮ߦ࣌Τϥʔ ͳΔ w .BJO5ISFBE 6*5ISFBE Ͱ࣮ߦ͢Δͱ ΤϥʔʹͳΔ

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ඇಉظॲཧ

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ඇಉظॲཧ w .BJO 6* 5ISFBEΛࢭΊͳ͍ͨΊʹ
 ඇಉظʹॲཧ͢Δඞཁ͕͋Δ w ओʹωοτϫʔΫɺσΟεΫΞΫηε͕ൃ ੜ͢Δॲཧ͕ର৅

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ओͳखஈ w 3Y+BWB w ,PUMJODPSPVUJOFT

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3Y+BWB w 3YܥͷϥΠϒϥϦͳͷͰɺͳΕͯΔਓ͸ͱͬ ͖ͭ΍͍͢ w ࠓͷͱ͜Ζͷఆ൪

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"OESPJEͰͷ࢖༻ྫ fun done(task: Task) = repository.doneTask(task) .subscribeOn(Schedulers.io()) .observeOn(AndroidSchedulers.mainThread()) .subscribe({ // ੒ޭ࣌ͷॲཧ }, { // ࣦഊ࣌ͷॲཧ }) override fun doneTask(task: Task): Completable = Completable.create { try { task.status = Task.Status.DONE db.taskDao().updateTask(task) it.onComplete() } catch (e: Exception) { it.onError(e) } } ॲཧࣗମ͸ผεϨουʹͯ͠ ݁ՌΛϝΠϯεϨουͰड͚औΔ

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,PUMJODPVSPVUJOFT

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,PUMJODPVSPVUJOFT w ·ͩ&YQFSJNFOUBM w ܰྔεϨου

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,PUMJODPSPVUJOFT w %JTQBUDIFS ࣮ߦ͢ΔεϨου w +PC DPSPVUJOFΛΩϟϯηϧͰ͖Δ w $PSPVUJOF$POUFYU ओʹ%JTQBUDIFSͱ+PCͷ ૊Έ߹Θͤ w 4DPQF είʔϓ಺Ͱ࣮ߦ͞ΕͨDPSPVUJOF͸ࢠ DPSPVUJOFʹͳΔ

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είʔϓ ਌ ࢠ ࢠ ࢠ +PC $BODFM ਌ͷείʔϓͰ࡞ΒΕͨ $PSPVUJOF͸ࢠ$PSPVUJOFʹͳΔ ਌ͷ+PCΛΩϟϯηϧ͢Δͱ ࠶ؼతʹࢠΛ$BODFM͢Δ

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class WordViewModel(application: Application) : AndroidViewModel(application) { private var parentJob = Job() private val coroutineContext: CoroutineContext get() = parentJob + Dispatchers.Main private val scope = CoroutineScope(coroutineContext) override fun onCleared() { super.onCleared() parentJob.cancel() } } viewModel.scope.launch(Dispatchers.IO) { // ඇಉظʹ͍ͨ͠ॲཧ } "OESPJEͰͷ࢖༻ྫ "DUJWJUZͷഁغ࣌ʹίϧʔνϯΛDBODFM͠ͳ͍ͱ ϝϞϦϦʔΫ͢ΔՄೳੑ͕͋Δ

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σόοΫʹ࢖͑Δπʔϧ

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%FCVH5PPMT w TUFUIP w IZQFSJPO

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TUFUIP w $ISPNFͰ%FW5PPMTͱಉ͡ૢ࡞ੑͰ "OESPJEͷঢ়ଶ͕ΈΕΔ

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DISPNFJOTQFDUEFWJDFT ʹΞΫηε

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ඪ४Ͱ42-JUF 4IBSFE1SFGFSFODFͳͲ͕ݟΕΔ

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ϓϥάΠϯΛ࢖͑͹ωοτϫʔΫ௨৴΋ΈΕΔ

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IZQFSJPO w ΞϓϦͰΞϓϦͷσόοά͕Ͱ͖Δ

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ࢀߟʹͨ͠ιʔε w %SPJE,BJHJͷެࣜΞϓϦ w (PPHMFެࣜͷ"OESPJE"SDIJUFDUVSF ͷιʔεɻϦϙδτϦͰΞʔΩςΫνϟΛϒ ϥϯνͰ੾Γସ͑ΒΕΔ

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͍͞͝ʹ w ๻͕ಠֶͰษڧͯ͠Δ͚ͩͰ͸ͨͲΓ͖ͭʹ ͍͘෦෼Λ·ͱΊ·ͨ͠ w ॳֶऀͷ໾ʹܦͯ͹޾͍Ͱ͢

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͝ਗ਼ௌ ͋Γ͕ͱ͏͍͟͝·ͨ͠