potatotips #56 (iOS/Android開発Tips共有会)

Transcript

1. Copyright © ZOZO Technologies, Inc. All Right Reserved.
   גࣜձࣾ;0;0ςΫϊϩδʔζ
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2. ϓϩϑΟʔϧ
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   Copyright © ZOZO Technologies, Inc. All Right Reserved.
   !ZTIPHP
   (JUIVC !ZTIPHP
   ݸਓͰ͸'MVUUFSʹϋϚ͍ͬͯΔ
   

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3. Copyright © ZOZO Technologies, Inc. All Right Reserved.
   ࠓ೔࿩͢͜ͱ
   ɾ,PUMJO$PSPVUJOFͬͯͳʹʁʁ
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4. Copyright © ZOZO Technologies, Inc. All Right Reserved.
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   ඇಉظϓϩάϥϛϯά·ͨ͸ඇϒϩοΩϯά
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5. Copyright © ZOZO Technologies, Inc. All Right Reserved.
   
   

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6. Copyright © ZOZO Technologies, Inc. All Right Reserved.
   ,PUMJO$PSPVUJOFͬͯͳʹʁʁ
   XJLJQFEJBͰ$PSPVUJOFΛݕࡧ͢Δͱ
   αϒϧʔνϯ͕ΤϯτϦʔ͔ΒϦλʔϯ·ͰΛҰͭͷॲཧ୯Ґͱ͢Δͷʹର
   ͠ɺίϧʔνϯ͸͍ͬͨΜॲཧΛதஅͨ͠ޙɺଓ͖͔ΒॲཧΛ࠶։Ͱ͖Δɻ
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   ಈ࡞Λߦ͏͜ͱʹΑΔɻ
   

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7. Copyright © ZOZO Technologies, Inc. All Right Reserved.
   
   

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8. Copyright © ZOZO Technologies, Inc. All Right Reserved.
   ,PUMJO$PSPVUJOFͬͯͳʹʁʁ
   ʮதஅՄೳͳܭࢉॲཧΠϯελϯεʯ
   

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9. Copyright © ZOZO Technologies, Inc. All Right Reserved.
   
   

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10. Copyright © ZOZO Technologies, Inc. All Right Reserved.
    ,PUMJO$PSPVUJOFͬͯͳʹʁʁ
    ཁ͸
    ؔ਺ͷ్தͰதஅͤͨ͞Γɺ࠶։ͨ͠Γ͢Δ΍ͭ
    

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11. Copyright © ZOZO Technologies, Inc. All Right Reserved.
    ,PUMJO$PSPVUJOFͬͯͳʹʁʁ
    "OESPJEͰ͸
    ɾඇಉظॲཧͷ଴ͪ߹Θͤ
    ɾλΠϜΞ΢τͤ͞Δ
    ɾ͍ΖΜͳඇಉظॲཧΛҰؾʹࢭΊΔ
    ͞·͟·ͳඇಉظॲཧΛ؅ཧ͢Δ΋ͷͱߟ͍͍͑ͯ
    

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12. Copyright © ZOZO Technologies, Inc. All Right Reserved.
    ,PUMJO$PSPVUJOFͬͯͳʹʁʁ
    3Y+BWBͷ୅ସ͑Ͱ͸ͳ͍
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    σʔλϑϩʔΛએݴతʹॻ͘ϦΞΫςΟϒϓϩάϥϛϯά
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    தஅՄೳܭࢉΠϯελϯε
    

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13. Copyright © ZOZO Technologies, Inc. All Right Reserved.
    ࢖͍ํ
    fun main() {
    GlobalScope.launch {
    delay(1000L)
    println("World!")
    }
    println("Hello,")
    Thread.sleep(2000L)
    }
    

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14. Copyright © ZOZO Technologies, Inc. All Right Reserved.
    ࢖͍ํ
    5JNFPVU
    fun main() = runBlocking {
    //sampleStart
    withTimeout(1300L) {
    repeat(1000) { i ->
    println("I'm sleeping $i ...")
    delay(500L)
    }
    }
    //sampleEnd
    }
    

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15. ࢖͍ํ
    ଴ͪ߹Θͤ
    fun main() = runBlocking {
    //sampleStart
    val time = measureTimeMillis {
    println("The answer is ${concurrentSum()}")
    }
    println("Completed in $time ms")
    //sampleEnd
    }
    suspend fun concurrentSum(): Int = coroutineScope {
    val one = async { doSomethingUsefulOne() }
    val two = async { doSomethingUsefulTwo() }
    one.await() + two.await()
    }
    suspend fun doSomethingUsefulOne(): Int {
    delay(1000L) // pretend we are doing something useful here
    return 13
    }
    suspend fun doSomethingUsefulTwo(): Int {
    delay(1000L) // pretend we are doing something useful here, too
    return 29
    }
    

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16. Copyright © ZOZO Technologies, Inc. All Right Reserved.
    // retorofit
    implementation 'com.jakewharton.retrofit:retrofit2-kotlin-coroutines-adapter:0.9.2'
    // coroutines
    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:1.0.1"
    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:1.0.1"
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17. Copyright © ZOZO Technologies, Inc. All Right Reserved.
    interface MainService {
    companion object {
    const val baseUrl = “URL"
    }
    @GET(“/id“)
    fun getUser(): Deferred>
    }
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18. Copyright © ZOZO Technologies, Inc. All Right Reserved.
    fun getUserInfo() = Retrofit.Builder()
    .baseUrl(MainService.baseUrl)
    .addConverterFactory(MoshiConverterFactory.create())
    .addCallAdapterFactory(CoroutineCallAdapterFactory())
    .build().create(MainService::class.java)
    }
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19. Copyright © ZOZO Technologies, Inc. All Right Reserved.
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    GlobalScope.launch {
    val info = repository.getUserInfo()
    val userRequest = info.getUser()
    val userResponse = userRequest.await()
    if (!userResponse.isSuccessful) {
    ɹɹɹɹɹɹɹɹɹ// ΤϥʔॲཧΛ࣮ߦ͢Δ
    return@launch
    }
    userModel.set(userResponse.body() ?: return@launch)
    }
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20. Copyright © ZOZO Technologies, Inc. All Right Reserved.
    ·ͱΊ
    ɾ$PSPVUJOFͱ͸ʮؔ਺ͷ్தͰதஅͤͨ͞Γɺ
    ࠶։ͨ͠Γ͢Δ΍ͭʯ
    ɾ3Y+BWBͷ୅ସ͑Ͱ͸ͳ͍
    ɾ3FUSPGJUͱҰॹʹ࢖͑·͢
    

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21. Copyright © ZOZO Technologies, Inc. All Right Reserved.
    ίϧʔνϯΛੵۃతʹಋೖ͍ͯͧ͘͠ʂʂ
    

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22. Copyright © ZOZO Technologies, Inc. All Right Reserved.
    ͝੩ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠
    

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