Retrofit(五)--ExecutorCallAdapterFactory

移步Retrofit--网络通讯框架

ExecutorCallAdapterFactory的工作

• 持有回调给用户的执行器MainThreadExecutor
• 返回生成用户最终使用的Call对象的获取对象CallAdapter
• 用户做网络请求的Call对象ExecutorCallbackCall

源码分析

1. 初始化的入口

  static class Android extends Platform {
    ...
    @Override CallAdapter.Factory defaultCallAdapterFactory(@Nullable Executor callbackExecutor) {
      if (callbackExecutor == null) throw new AssertionError();
        return new ExecutorCallAdapterFactory(callbackExecutor);
    }
    ...
}

  ExecutorCallAdapterFactory(Executor callbackExecutor) {
    this.callbackExecutor = callbackExecutor;
  }

由此可知ExecutorCallAdapterFactory持有回调给用户的执行器MainThreadExecutor

2. get()，获取CallAdapter的方法

  @Override
  public CallAdapter get(Type returnType, Annotation[] annotations, Retrofit retrofit) {
    if (getRawType(returnType) != Call.class) {
      return null;
    }
    final Type responseType = Utils.getCallResponseType(returnType);
    //返回用于生成用户最终持有的用户网络请求的Call对象
    return new CallAdapter>() {
      @Override public Type responseType() {
        return responseType;
      }
      //此处的call为真正做网络请求的OkHttpCall对象
      @Override public Call