server-engineer-android-introduction

Transcript

1. αʔόʔαΠυΤϯδχΞ͕ "OESPJEೖ໳ͨ͠࿩
2. ϞόΠϧΞϓϦαʔϏε෦
   ୲౰
   ϞόΠϧΞϓϦͷόοΫΤϯυ"1*

   
   
   
   
   
   
   
   "84؀ڥߏஙɺӡ༻
   
3. ࠓ೔࿩͢͜ͱ w ͳͥαʔόʔαΠυͷਓ͕"OESPJE
   w ษڧํ๏
   w ࢓ࣄͰ࢖ΘΕ͍ͯΔίʔυͱͷࠩ
   w σόοΫʹ࢖͑Δπʔϧ
4. ͳͥαʔόʔαΠυͷ ਓ͕"OESPJE
5. ओͳཧ༝ w Ͱ͖Δ͜ͱΛ૿΍ͯ͠௵͕͖͘͠Α͏ʹͨ͠ ͍ɹ
   w Ұ؏ͯ͠ཧղ͓͖͍ͯͨ͠
6. N#BBT αʔόʔ N#BBTͷొ৔ ೝূ Ӭଓ 1VTI ͦͷଞ αʔόʔ ೝূ Ӭଓ 1VTI ͦͷଞ ؆୯ͰҰൠతͳϢʔεέʔεͳΒ
   N#BBTͷΈͰ׬݁ͯ͠͠·͏͜ͱ΋ ొ৔લ ొ৔ޙ
7. (&5
   OFXT (&5
   OPUJpDBUJPO ҰൃͰͱΕΔΑ͏ ʹͯ͘͠Εͳ͍͔ ͳɻɻɻ (&5
   JOGP Ұ؏ͯ͠೺Ѳ͓͖͍ͯͨ͠ ࣗ෼Ͱମݧ͠ͳ͍ͱΘ͔Βͳ͍͜ͱ͕͋Δ
8. ษڧํ๏
9. ษڧํ๏ w ·ͣ౤ࢿ
   w ॻ੶
   w άάͬͯࣸܦ
10. ͱΓ͋͑ͣങͬͨ ສ
11. ࠷ॳʹങͬͨຊ 
12. ࣍ʹങͬͨຊ 
13. 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 }
14. 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 }
15. override fun onCreate(savedInstanceState: Bundle?) { // ॲཧ1.. // ॲཧ2.. // ॲཧ3.. // ॲཧ4.. // ॲཧ5.. PO$SFBUFʹू·Δॲཧ ͍͍͠Ε͵ෆ҆
16. ͔ͪ͘ʹ͍͍ݟຊ͕͋ͬͨ
17. ࢓ࣄͰ࢖ΘΕ͍ͯΔ
    ίʔυͱͷࠩ
18. ࠩ w ΞʔΩςΫνϟ
    w ඇಉظ
    w ӬଓԽ
    w %FCVH
    5PPMT
19. ΞʔΩςΫνϟ
20. ୅දతͳΞʔΩςΫνϟ w .71
    w .77.
21. .71
    .PEFM
    7JFX
    1SFTFOUFS
22. .71
    .PEFM
    7JFX
    1SFTFOUFS 1SFTFOUFS
    ͕௚઀7JFXͷࢀর
    Λ΋ͭ
23. .77.
    .PEFM
    7JFX
    7JFX
    .PEFM
24. .77.
    .PEFM
    7JFX
    7JFX
    .PEFM ૒ํ޲ͷ%"5"
    #*/%*/(
25. ୅දతͳΞʔΩςΫνϟ w .71
    w J04ͱΞʔΩςΫνϟΛ߹Θͤ΍͍͢
    w .77.
    w %BUB
    #JOEJOH͋ΔͷͰΑΓ؆ܿʹॻ͚Δ͕ίʔ υ͕ࣗಈੜ੒͞ΕΔͷͰͱ͖ͬͭʹ͍͘͜ͱ΋͋ Δ
26. ୅දతͳΞʔΩςΫνϟ w .71
    w .77. ࠓճ͸ͬͪ͜
27. .77.
    .PEFM
    7JFX
    7JFX
    .PEFM
28. .77.Ͱ࢖ΘΕΔ
    ެࣜϥΠϒϥϦ w 7JFX.PEFM
    w %BUB
    #JOEJOH
    w -JWF
    %BUB
29. 7JFX.PEFM
30. 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
31. %BUB
    #JOEJOH <layout> <data> <variable name="viewModel" type="com.example.ui.main.ViewModel/" /> </data> <EditText android:text="@={viewModel.body}" /> <Button android:onClick="@{(view)->viewModel.submit()}" /> class ViewModel() { val body = MutableLiveData<String>() fun submit() { // ॲཧ } }
32. %BUB
    #JOEJOH <layout> <data> <variable name="viewModel" type="com.example.ui.main.ViewModel/" /> </data> <EditText android:text="@={viewModel.body}" /> <Button android:onClick="@{(view)->viewModel.submit()}" /> </layout> class ViewModel() { val body = MutableLiveData<String>() fun submit() { // ॲཧ } }
33. %BUB
    #JOEJOH <layout> <data> <variable name="viewModel" type="com.example.ui.main.ViewModel/" /> </data> <EditText android:text="@={viewModel.body}" /> <Button android:onClick="@{(view)->viewModel.submit()}" /> class ViewModel() { val body = MutableLiveData<String>() fun submit() { // ॲཧ } }
34. %BUB
    #JOEJOH <layout> <data> <variable name="viewModel" type="com.example.ui.main.ViewModel/" /> </data> <EditText android:text="@={viewModel.body}" /> <Button android:onClick="@{(view)->viewModel.submit()}" /> class ViewModel() { val body = MutableLiveData<String>() fun submit() { // ॲཧ } }
35. %BUB
    #JOEJOH <layout> <data> <variable name="viewModel" type="com.example.ui.main.ViewModel/" /> </data> <EditText android:text="@={viewModel.body}" /> <Button android:onClick="@{(view)->viewModel.submit()}" /> class ViewModel() { val body = MutableLiveData<String>() fun submit() { // ॲཧ } }
36. -JWF
    %BUB 7JFX 7JFX.PEFM -JWF%BUB 3FQPTJUPSZ 4PNF
    1SPDFTT ஋ʹมߋ͕͋Ε͹௨஌Λड͚ 7JFXΛมߋ Ϣʔβʔͷૢ࡞Ͱ
    มߋ͕͋Ε͹ઃఆ ஋Ληοτ มߋ͕͋Ε͹௨஌
37. -JWF
    %BUB <layout> <data> <variable name="viewModel" type="com.example.ui.main.ViewModel/" /> </data> <EditText android:text="@={viewModel.body}" /> <Button android:onClick="@{(view)->viewModel.submit()}" /> class ViewModel() { val body = MutableLiveData<String>() fun submit() { // ॲཧ } }
38. -JWF
    %BUB viewModel.allWords.observe(this, Observer<String> { txt -> // มߋ௨஌࣌ͷॲཧ })
39. .77.ಋೖޮՌ w pOE7JFX#Z*Eͷ๾໓
    w WJFXΛૢ࡞͢Δίʔυͷ๾໓
    w PO$SFBUF͔ΒϩδοΫΛ੾Γ཭ͤͨ
40. Ӭଓॲཧ
41. Ӭଓॲཧ w ϝϞϦʹ࣋ͬͯΔ͚ͩͩͱͳΜ͔͠ΒͷλΠ ϛϯάͰ͙͢ফ͑Δ ౰વ
    w ඪ४ͷ42-JUFͷૢ࡞ϥΠϒϥϦ͕͋Δ͚Ͳ ৑௕
42. 3PPN @Entity(tableName = "word_table") data class Word( @PrimaryKey @NonNull @ColumnInfo(name = "word") var mWord: String )
43. 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<List<Word>> }
44. ஫ҙ఺ w LPUMJOͩͱLBQUΛ࢖Θͳ͍ͱ࣮ߦ࣌Τϥʔ ͳΔ
    w .BJO5ISFBE 6*
    5ISFBE Ͱ࣮ߦ͢Δͱ ΤϥʔʹͳΔ
45. ඇಉظॲཧ
46. ඇಉظॲཧ w .BJO 6*
    5ISFBEΛࢭΊͳ͍ͨΊʹ
 ඇಉظʹॲཧ͢Δඞཁ͕͋Δ
    w
    ओʹωοτϫʔΫɺσΟεΫΞΫηε͕ൃ ੜ͢Δॲཧ͕ର৅
47. ओͳखஈ w 3Y+BWB
    w ,PUMJO
    DPSPVUJOFT
48. 3Y+BWB w 3YܥͷϥΠϒϥϦͳͷͰɺͳΕͯΔਓ͸ͱͬ ͖ͭ΍͍͢
    w ࠓͷͱ͜Ζͷఆ൪
49. "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
50. ,PUMJO
    DPVSPVUJOFT
51. ,PUMJO
    DPVSPVUJOFT w ·ͩ&YQFSJNFOUBM
    w ܰྔεϨου
52. ,PUMJO
    DPSPVUJOFT w %JTQBUDIFS ࣮ߦ͢ΔεϨου
    w +PC DPSPVUJOFΛΩϟϯηϧͰ͖Δ
    w $PSPVUJOF$POUFYU ओʹ%JTQBUDIFSͱ+PCͷ ૊Έ߹Θͤ
    w 4DPQF είʔϓ಺Ͱ࣮ߦ͞ΕͨDPSPVUJOF͸ࢠ DPSPVUJOFʹͳΔ
53. είʔϓ ਌ ࢠ ࢠ ࢠ +PC $BODFM ਌ͷείʔϓͰ࡞ΒΕͨ
    $PSPVUJOF͸ࢠ$PSPVUJOFʹͳΔ ਌ͷ+PCΛΩϟϯηϧ͢Δͱ
    ࠶ؼతʹࢠΛ$BODFM͢Δ
54. 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
55. σόοΫʹ࢖͑Δπʔϧ
56. %FCVH
    5PPMT w TUFUIP
    w IZQFSJPO
57. TUFUIP w $ISPNFͰ%FW5PPMTͱಉ͡ૢ࡞ੑͰ "OESPJEͷঢ়ଶ͕ΈΕΔ
59. DISPNFJOTQFDUEFWJDFT
    ʹΞΫηε
60. ඪ४Ͱ42-JUF
    4IBSFE1SFGFSFODFͳͲ͕ݟΕΔ
61. ϓϥάΠϯΛ࢖͑͹ωοτϫʔΫ௨৴΋ΈΕΔ
62. IZQFSJPO w ΞϓϦͰΞϓϦͷσόοά͕Ͱ͖Δ
64. ࢀߟʹͨ͠ιʔε w %SPJE,BJHJͷެࣜΞϓϦ
    w (PPHMFެࣜͷ"OESPJE
    "SDIJUFDUVSF ͷιʔεɻϦϙδτϦͰΞʔΩςΫνϟΛϒ ϥϯνͰ੾Γସ͑ΒΕΔ
65. ͍͞͝ʹ w ๻͕ಠֶͰษڧͯ͠Δ͚ͩͰ͸ͨͲΓ͖ͭʹ ͍͘෦෼Λ·ͱΊ·ͨ͠
    w ॳֶऀͷ໾ʹܦͯ͹޾͍Ͱ͢
66. ͝ਗ਼ௌ
    ͋Γ͕ͱ͏͍͟͝·ͨ͠