Retrofit 2 HTTP method annotation is required (e.g., @GET, @POST, etc.)

Question

What\'s wrong with my Retrofit configuration? I\'m having this error when I\'m adding Basic Authentication with my OkHttpClient but when I used the default client without Interc

Answer 1

It look like you are using proguard and it is stripping annotations. To get saved from it add this lines to your proguard-rules.pro

-keepattributes *Annotation*
-keep class retrofit.** { *; }
-keepclasseswithmembers class * {
@retrofit.http.* ; }
-keepattributes Signature

if not using proguard make sure that you havn't written something in your app build.gradle something like this

buildTypes {
    release {
        minifyEnabled true
        proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
    }
}

Note: Android does not come normally with many of the javax.annotation library by default.

if it is not so then try adding this in your gradle dependency (build.gradle)

provided 'org.glassfish:javax.annotation:10.0-b28'