Android で Multiplatform Settings を使う

Yumemi.apk #5 ( https://yumemi.connpass.com/event/219861/ ) の資料

Transcript

1. Android Ͱ Multiplatform
   Settings Λ࢖͏
   2021.9.10 YUMEMI.apk #5
   
   
   Hiroyuki Kusu ( @hkusu_ )
   
   
   

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2. About me
   
   

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3. ΈΜͳ͕஌ͬͯΔ͋ͷαʔϏεɺ
   ࣮͸ΏΊΈ͕࡞ͬͯ·͢ɻ
   શੈք5000ສMAUʹୡ͢ΔωοταʔϏεΛΦʔμʔϝΠυͰاըઃܭ͠ɺ
   
   γεςϜߏஙӡ༻͔ΒվળఏҊ·Ͱαϙʔτ͍͖ͯ͠·͢ɻ
   
   

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4. 
   Multiplatform Settings
   https://github.com/russhwolf/multiplatform-settings
   • key-value σʔλӬଓԽͷҝͷ Kotlin
   Multiplatform ϥΠϒϥϦ
   
   
   • Android ͷ৔߹͸ SharedPreferences
   ͕಺෦తʹར༻͞ΕΔ
   

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5. Kotlin Multiplatform ϓϩδΣΫτͰ
   
   
   ͳͯ͘΋௨ৗͷ Android ͷϓϩδΣΫτ
   
   
   Ͱ΋ར༻Ͱ͖ΔͷͰར༻ͯ͠ΈΔ
   
   ຊ೔ͷ࿩୊
   

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6. 
   implementation("com.russhwolf:multiplatform-settings:0.7.4"
   )
   
   implementation("com.russhwolf:multiplatform-settings-coroutines:0.7.4")
   build.gradle.kts
   ಋೖ
   ※ ݱ࣌఺ͷ࠷৽όʔδϣϯ͸ 0.8 ͷΑ͏Ͱ͢
   Coroutines ༻ͷ֦ு
   

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7. 
   val context: Context = ..
   .
   
   val sharedPreferences: SharedPreferences = context.getSharedPreferences("main", Context.MODE_PRIVATE
   )
   
   val flowSettings: FlowSettings = AndroidSettings(sharedPreferences, commit = true).toFlowSettings()
   FlowSettings Πϯελϯεͷ࡞੒
   

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8. 
   @ExperimentalSettingsAp
   i
   
   class AccountDao(private val settings: FlowSettings)
   {
   
   val nameFlow: Flow = settings.getStringOrNullFlow(KEY_NAME
   )
   
   suspend fun getName(): String?
   {
   
   return settings.getStringOrNull(KEY_NAME
   )
   
   }
   
   suspend fun setName(name: String)
   {
   
   settings.putString(KEY_NAME, name
   )
   
   }
   
   companion object
   {
   
   private const val KEY_NAME = "name
   "
   
   }
   
   }
   Dao Ϋϥεͷ༻ҙ
   FlowSettings ΠϯελϯεΛͦͷ··ར༻ͯ͠΋Α͍͕ɺςετ࣌ʹϞοΫ͍ͨ͠ͷͰϥούʔΫϥεΛ༻ҙ
   
   
   ʢkey Λར༻ऀ͔ΒӅṭͨ͠Γɺૢ࡞Λந৅Խ͢Δ౳ͷ໨త΋͋Δʣ
   

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9. 
   @ExperimentalSettingsAp
   i
   
   class AccountDao(private val settings: FlowSettings)
   {
   
   val nameFlow: Flow = settings.getStringOrNullFlow(KEY_NAME
   )
   
   suspend fun getName(): String?
   {
   
   return settings.getStringOrNull(KEY_NAME
   )
   
   }
   
   suspend fun setName(name: String)
   {
   
   settings.putString(KEY_NAME, name
   )
   
   }
   
   companion object
   {
   
   private const val KEY_NAME = "name
   "
   
   }
   
   }
   DaoΫϥεͷ༻ҙ
   Suspending Function ͰಡΈॻ͖
   

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10. 
    @ExperimentalSettingsAp
    i
    
    class AccountDao(private val settings: FlowSettings)
    {
    
    val nameFlow: Flow = settings.getStringOrNullFlow(KEY_NAME
    )
    
    suspend fun getName(): String?
    {
    
    return settings.getStringOrNull(KEY_NAME
    )
    
    }
    
    suspend fun setName(name: String)
    {
    
    settings.putString(KEY_NAME, name
    )
    
    }
    
    companion object
    {
    
    private const val KEY_NAME = "name
    "
    
    }
    
    }
    DaoΫϥεͷ༻ҙ
    σʔλʹมߋΠϕϯτΛྲྀ͢ Flow
    

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11. 
    val context: Context = ..
    .
    
    val sharedPreferences: SharedPreferences = context.getSharedPreferences("main", Context.MODE_PRIVATE
    )
    
    val flowSettings: FlowSettings = AndroidSettings(sharedPreferences, commit = true).toFlowSettings()
    FlowSettings Πϯελϯεͷ࡞੒ʢ࠶ܝʣ
    SharedPreferences ΁ͷσʔλอଘͰ͸ commitʢಉظʣͱ applyʢඇಉظʣͷ2ܗ͕ࣜ͋Δ͕ɺCoroutines Խ
    ͨ͜͠ͱʹΑΓ commit ͷσϝϦοτʢεϨουͷϒϩοΫʣ͕ബ·͍ͬͯΔͷͰ commit Λ࠾༻
    
    
    㱺 Coroutines ͷ࢓૊Έʹ৐Δ͜ͱͰɺ࣮ߦॱ΍εϨουΛؾʹͤͣσʔλͷಡΈॻ͖͕Մೳʹ
    
    
    

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12. 
    • Multiplatform ϥΠϒϥϦͰ͋Δ͕ Android ୯ମͰར༻ͯ͠
    ΋ศར
    
    
    • ଞʹ΋ศརͦ͏ͳ Multiplatform ϥΠϒϥϦ͕͋ΔͷͰಋೖΛ
    ݕ౼ͯ͠΋Α͍͔΋ʁ
    
    
    • Retro
    fi
    t ͷସΘΓʹ Ktor
    
    
    • Room ͷସΘΓʹ SQLDelight ͳͲͳͲ..
    ͓ΘΓʹ
    

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13. Thank you !
    
    
    @hkusu_
    ฐࣾ͸ Android ΤϯδχΞ ઈࢍืूத Ͱ͢ʂ
    
    

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