Android Retrofit+RXJava的使用

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Android Retrofit+RXJava的使用

Retrofit+RXJava

Retrofit和RXJava分别是什么就不一个个的介绍了,都是我们现在常用的最受欢迎的.当然,现在常用的也是将Retrofit与RXJava结合起来,下面就是我将两者最简单的结合

首先第一步我们添加依赖和添加网络权限

 //RXJavaimplementation 'io.reactivex.rxjava2:rxjava:2.2.6'implementation 'io.reactivex.rxjava2:rxandroid:2.1.0'//Retrofitimplementation 'com.squareup.retrofit2:retrofit:2.4.0'//Gson converterimplementation 'com.squareup.retrofit2:converter-gson:2.4.0'//RxJava2 Adapterimplementation "com.squareup.retrofit2:adapter-rxjava2:2.3.0"//httpimplementation 'com.squareup.okhttp3:okhttp:3.4.1'implementation 'com.squareup.okhttp3:logging-interceptor:3.9.1'

//清单文件内添加网络权限<uses-permission android:name="android.permission.INTERNET"/>

第二步创建一个实体类,用来存放数据

package com.example.retrofitdemo;import java.util.List;public class FoodBean {/*** ret : 1* data : [{"id":"8289","title":"油焖大虾","pic":".jpg","collect_num":"1668","food_str":"大虾 葱 生姜 植物油 料酒","num":1668},{"id":"2127","title":"四川回锅肉","pic":".jpg","collect_num":"1590","food_str":"猪肉 青蒜 青椒 红椒 姜片","num":1590},{"id":"30630","title":"超简单芒果布丁","pic":".jpg","collect_num":"1542","food_str":"QQ糖 牛奶 芒果","num":1542},{"id":"9073","title":"家常红烧鱼","pic":".jpg","collect_num":"1425","food_str":"鲜鱼 姜 葱 蒜 花椒","num":1425},{"id":"10097","title":"家常煎豆腐","pic":".jpg","collect_num":"1417","food_str":"豆腐 新鲜红椒 青椒 葱花 油","num":1417},{"id":"10509","title":"水煮肉片","pic":".jpg","collect_num":"1340","food_str":"瘦猪肉 生菜 豆瓣酱 干辣椒 花椒","num":1340},{"id":"46968","title":"红糖苹果银耳汤","pic":".jpg","collect_num":"1252","food_str":"银耳 苹果 红糖","num":1252},{"id":"10191","title":"麻婆豆腐","pic":".jpg","collect_num":"1220","food_str":"豆腐 肉末 生抽 白糖 芝麻油","num":1220},{"id":"2372","title":"皮蛋瘦肉粥","pic":".jpg","collect_num":"1151","food_str":"大米 皮蛋 猪肉 油条 香葱","num":1151},{"id":"2166","title":"蚂蚁上树","pic":".jpg","collect_num":"1144","food_str":"红薯粉 肉 姜 蒜 花椒","num":1144},{"id":"2262","title":"糖醋肉","pic":".jpg","collect_num":"1077","food_str":"猪肉 红椒 黄椒 洋葱 蛋清","num":1077},{"id":"9971","title":"鱼香豆腐","pic":".jpg","collect_num":"1009","food_str":"豆腐 木耳 胡萝卜 香葱 番茄酱","num":1009},{"id":"10172","title":"干煸四季豆","pic":".jpg","collect_num":"991","food_str":"四季豆 干辣椒 蒜头 酱油 糖","num":991},{"id":"2685","title":"胡萝卜肉末蒸蛋","pic":".jpg","collect_num":"926","food_str":"胡萝卜 肉 蛋 生抽 盐","num":926},{"id":"9972","title":"虎皮青椒","pic":".jpg","collect_num":"891","food_str":"青辣椒 大蒜 香醋 白糖 生抽","num":891},{"id":"10437","title":"叉烧排骨","pic":".jpg","collect_num":"802","food_str":"排骨 李锦记叉烧酱 植物油 清水 油菜","num":802},{"id":"2892","title":"\u201c五行\u201d彩蔬汤","pic":".jpg","collect_num":"760","food_str":"黑木耳 玉米 牛蒡 胡萝卜 西兰花","num":760},{"id":"2348","title":"麻辣肉丝面","pic":".jpg","collect_num":"758","food_str":"面条 肉丝 淀粉 酱油 辣椒","num":758},{"id":"33783","title":"美人豆浆","pic":".jpg","collect_num":"757","food_str":"黄豆 红豆 绿豆 黑豆 黑米","num":757},{"id":"10044","title":"土豆炖翅根","pic":".jpg","collect_num":"755","food_str":"土豆 翅根 葱 姜 料酒","num":755}]*/private int ret;private List<DataBean> data;public int getRet() {return ret;}public void setRet(int ret) {this.ret = ret;}public List<DataBean> getData() {return data;}public void setData(List<DataBean> data) {this.data = data;}public static class DataBean {/*** id : 8289* title : 油焖大虾* pic : .jpg* collect_num : 1668* food_str : 大虾 葱 生姜 植物油 料酒* num : 1668*/private String id;private String title;private String pic;private String collect_num;private String food_str;private int num;public String getId() {return id;}public void setId(String id) {this.id = id;}public String getTitle() {return title;}public void setTitle(String title) {this.title = title;}public String getPic() {return pic;}public void setPic(String pic) {this.pic = pic;}public String getCollect_num() {return collect_num;}public void setCollect_num(String collect_num) {this.collect_num = collect_num;}public String getFood_str() {return food_str;}public void setFood_str(String food_str) {this.food_str = food_str;}public int getNum() {return num;}public void setNum(int num) {this.num = num;}@Overridepublic String toString() {return "DataBean{" +"id='" + id + '\'' +", title='" + title + '\'' +", pic='" + pic + '\'' +", collect_num='" + collect_num + '\'' +", food_str='" + food_str + '\'' +", num=" + num +'}';}}}

第三步创建一个Retrofit用于来网络请求的接口(注意:导入包的时候别错了)

• @GET注解代表的是请求方法,使用GET请求网络,里面所填写的参数代表完整Url的后半段
• Observable为被观察者对象,泛型就是我们所要的数据的实体类
• getFood()为用来返回Observable类型的参数,方法内的参数为Url内可改变的一些数,我们到时候可以根据自己需要来将数码传进来
• @Query内的参数就是Url上的可改变数的名字,如Url上有页码 page = 1 那么我们就定义 @Query(“page”)

import io.reactivex.Observable;
import retrofit2.http.GET;
import retrofit2.http.Query;//.php?stage_id=1&limit=20&page=1
public interface RetrofitJson {@GET("ios/cf/dish_list.php")Observable<FoodBean> getFood(@Query("stage_id")String stage, @Query("limit")String limit, @Query("page")String page);} 

第四步就是回到我们需要的地方了,我是在Activity内,自己定义一个方法然后在需求里调用

 private void RxRetrofit() {//创建Retrofit的Builder对象Retrofit retrofit = new Retrofit.Builder()//设置Url的前部分.baseUrl("/")//设置Gson解析器.addConverterFactory(GsonConverterFactory.create())  //设置RxJava适配器 .addCallAdapterFactory(RxJava2CallAdapterFactory.create()).build();//创建对象//使用Retrofit动态代理获取之前定义的接口	RetrofitJson retrofitJson = retrofit.create(RetrofitJson.class);//调用接口内的方法,传入自己Url上所需的retrofitJson.getFood("1","10","1")//设置被观察者在子线程中执行.subscribeOn(Schedulers.io())//设置观察者在主线程中执行UI.observeOn(AndroidSchedulers.mainThread())//设置观察者,这里直接在里面创建一个并重写方法.subscribe(new Observer<FoodBean>() {@Overridepublic void onSubscribe(Disposable d) {//此方法为创建的时候调用}@Overridepublic void onNext(FoodBean foodBean) {//此方法为接收到onNext时候调用//此方法已经帮我们把数据传了过来 这里为foodBean,根据需求使用就可以了String s = foodBean.getData().toString();Toast.makeText(MainActivity.this, ""+s, Toast.LENGTH_SHORT).show();}@Overridepublic void onError(Throwable e) {//此方法在错误的时候调用}@Overridepublic void onComplete() {//此方法在结束的时候调用}});}

以上是我对两者结合简单基础的了解,想要了解更多的话上面蓝色字体为超链接,点击进入!!

本文标签： Android RetrofitRXJava的使用