1.gradle 添加
compile ‘com.squareup.retrofit2:retrofit:2.1.0‘
compile ‘com.squareup.retrofit2:converter-gson:2.1.0‘
compile ‘com.squareup.retrofit2:adapter-rxjava:2.1.0‘
compile ‘com.squareup.okhttp3:okhttp:3.4.1‘
compile ‘com.squareup.okio:okio:1.9.0‘
2.AndroidManifest.xml 权限
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
3.Application中初始化
HttpUtil.getInstance().init(this, "http://baiqi.ej-cloud.com:8070/iot/");
4.调用
HttpUtil.getInstance().get( new HttpUtil.Builder() .url("user/token/init") .params("key", "1") .params("type", "4") .callBackSuccess(new CallBackSuccess() { @Override public void onSuccess(String json) { TopicResponse topicResponse = JsonUtil.fromJson(json, TopicResponse.class); tv.setText(topicResponse.data.id); } }));
参考:
https://github.com/gengqiquan/HttpUtil
https://github.com/hongyangAndroid/okhttputils
原文：http://www.cnblogs.com/Westfalen/p/6764059.html