BehaviorDelegate.java 文件源码

@SuppressWarnings("unchecked") // Single-interface proxy creation guarded by parameter safety.
public <R> T returning(Call<R> call) {
  final Call<R> behaviorCall = new BehaviorCall<>(behavior, executor, call);
  return (T) Proxy.newProxyInstance(service.getClassLoader(), new Class[] { service },
      new InvocationHandler() {
        @Override
        public T invoke(Object proxy, Method method, Object[] args) throws Throwable {
          Type returnType = method.getGenericReturnType();
          Annotation[] methodAnnotations = method.getAnnotations();
          CallAdapter<R, T> callAdapter =
              (CallAdapter<R, T>) retrofit.callAdapter(returnType, methodAnnotations);
          return callAdapter.adapt(behaviorCall);
        }
      });
}