Retrofit
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Invoke-customs are only supported starting with Android OAndroid 2020. 6. 17. 14:21
app/build.gradle에 아래 옵션을 추가 Java 8을 쓴다면 android { compileOptions { sourceCompatibility JavaVersion.VERSION_1_8 targetCompatibility JavaVersion.VERSION_1_8 } } Java 10을 쓴다면 android { compileOptions { sourceCompatibility JavaVersion.VERSION_1_10 targetCompatibility JavaVersion.VERSION_1_10 } } Java 7을 쓴다면 android { compileOptions { sourceCompatibility JavaVersion.VERSION_1_7 targetCompatibility Ja..