Android RetrofitAPI

public class RetrofitAPI {
private static RetrofitAPI instance;
private Retrofit mRetrofit;

public RetrofitAPI() {
    mRetrofit=new Retrofit.Builder()
            .baseUrl(GlobalConstant.BASE_URL)//baseurl必须以/结尾
            .addConverterFactory(GsonConverterFactory.create())//添加数据解析器，即序列化器
            .addCallAdapterFactory(RxJavaCallAdapterFactory.create())
            .client(OkHttpUtil.okHttpClient)//指定http客户端
            .build();

}

public static RetrofitAPI getInstance() {
    if (instance==null){
        instance=new RetrofitAPI();
    }
    return instance;
}

public <T> T creatAPI(Class<T> cls){
    T t=mRetrofit.create(cls);
    return t;
}
}