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单例类 #11

@coolBreezes

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@coolBreezes

超哥,想请教一下,代码中单例类用的是懒汉式,不需要加双重检查么(加同步代码块)

protected static Retrofit getRetrofit() {

    if (null == mRetrofit) {

        if (null == mOkHttpClient) {
            mOkHttpClient = OkHttp3Utils.getOkHttpClient();
        }

        //Retrofit2后使用build设计模式
        mRetrofit = new Retrofit.Builder()
                //设置服务器路径
                .baseUrl(Constant.API_SERVER + "/")
                //添加转化库,默认是Gson
                .addConverterFactory(GsonConverterFactory.create())
                //添加回调库,采用RxJava
                .addCallAdapterFactory(RxJavaCallAdapterFactory.create())
                //设置使用okhttp网络请求
                .client(mOkHttpClient)
                .build();
    }

    return mRetrofit;
}

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