Kakao Login Setting(Android, IOS)

android/app/src/main/AndroidManifest.xml

<uses-permission android:name="android.permission.INTERNET" />

<intent-filter>         
   <data android:scheme="kakao[NATIVE_APP_KEY]" android:host="oauth"/>
</intent-filter>

android/app/build.gradle

 minSdkVersion 16 -> 19

ios/Podfile

platform :ios, '11.0'

XCode.. Runner/Runner/Info

KAKAO_APP_KEY   :   kakao[NATIVE_APP_KEY]

XCode.. Runner - Info - URL Types - URL Schemes

kakao[NATIVE_APP_KEY]