Retrofit @ java.lang.IllegalArgumentException：@FieldMap键必须是字符串类型：K（参数＃2）

Question

此例外只出现在一部手机中，而其他手机正常。我应该如何解决这个问题？这个异常与proguard有关吗？

详细例外：

java.lang.IllegalArgumentException: @FieldMap keys must be of type String: K (parameter #2) 
for method g.d 
at retrofit2.ServiceMethod$Builder.methodError(Unknown Source) 
at retrofit2.ServiceMethod$Builder.methodError(Unknown Source) 
at retrofit2.ServiceMethod$Builder.parameterError(Unknown Source) 
at retrofit2.ServiceMethod$Builder.parseParameterAnnotation(Unknown Source) 
at retrofit2.ServiceMethod$Builder.parseParameter(Unknown Source) 
at retrofit2.ServiceMethod$Builder.build(Unknown Source) 
at retrofit2.Retrofit.loadServiceMethod(Unknown Source) 
at retrofit2.Retrofit$1.invoke(Unknown Source) 
at $Proxy0.d(Native Method) 

Answer 1

由于没有代码片段，我建议你向你的服务方法的签名更改从@FieldMap HashMap/Map params到@FieldMap HashMap<String, String> params。并称它是这样的

HashMap<String, String> params = ServiceUtil.getInstance().getDefaultParams(); 
           maisService.fetchAjudaCategorias(params) 

这应该很好。