新语言Kotlin使用recyclerview展示数据+retrofit请求数据+Rxjava

依赖:

   compile 'com.squareup.retrofit2:retrofit:2.3.0'    compile 'com.squareup.retrofit2:converter-gson:2.3.0'    compile 'com.squareup.retrofit2:converter-scalars:2.3.0'    compile 'com.android.support:recyclerview-v7:26.1.0'    compile 'com.squareup.retrofit2:adapter-rxjava2:2.3.0'    compile 'io.reactivex.rxjava2:rxandroid:2.0.1'    compile 'com.squareup.okhttp3:okhttp:3.9.0'    compile 'io.reactivex.rxjava2:rxjava:2.1.7'    compile 'com.github.bumptech.glide:glide:3.7.0'

权限:

<uses-permission android:name="android.permission.INTERNET"/>

布局

主布局activity_main

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:app="http://schemas.android.com/apk/res-auto"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    tools:context="com.example.muhanxi.kotlindemo.MainActivity">    <android.support.v7.widget.RecyclerView        android:layout_width="match_parent"        android:layout_height="match_parent"        android:id="@+id/recyclerview"/></LinearLayout>

适配器布局layout

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="wrap_content">    <ImageView        android:layout_width="120dp"        android:layout_height="120dp"        android:id="@+id/item_imageview"/>    <TextView        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:id="@+id/item_textview"        android:textColor="#FF0000"/></LinearLayout>

bean类

package com.example.muhanxi.kotlindemo/** * Created by muhanxi on 17/12/14. */data class Bean(val error_code: Int, //200val reason: String, //请求成功！val result: Result)data class Result(val total: Int, //15767val limit: Int, //20val bookList: List<Book>)data class Book(val name: String, //灵神考试val type: String, //少年漫画val area: String, //国漫val des: String,val finish: Boolean, //falseval lastUpdate: Int, //20150603val coverImg: String //http://imgs.juheapi.com/comic_xin/5559b86938f275fd560ad613.jpg)

数据接口IGetDataBase

package com.example.muhanxi.kotlindemoimport io.reactivex.Observableimport okhttp3.ResponseBodyimport retrofit2.http.GET/** * Created by muhanxi on 17/12/13. */interface IService {    @GET("/comic/book?key=f54c4c57143b8fad9bf3193cab52a81c")    fun getData() : Observable<ResponseBody>}

MainActivity主类

package com.example.muhanxi.kotlindemoimport android.app.Activityimport android.content.Contextimport android.os.Bundleimport android.support.v7.widget.LinearLayoutManagerimport android.view.Viewimport android.widget.Toastimport com.google.gson.Gsonimport io.reactivex.Observableimport io.reactivex.Observerimport io.reactivex.android.schedulers.AndroidSchedulersimport io.reactivex.functions.Consumerimport io.reactivex.internal.util.BackpressureHelper.addimport io.reactivex.schedulers.Schedulersimport kotlinx.android.synthetic.main.activity_main.*import retrofit2.Responseimport retrofit2.Retrofitimport retrofit2.adapter.rxjava2.RxJava2CallAdapterFactoryclass MainActivity : Activity() {    lateinit var adapter : IAdapter    override fun onCreate(savedInstanceState: Bundle?) {        super.onCreate(savedInstanceState)        setContentView(R.layout.activity_main)        recyclerview.layoutManager = LinearLayoutManager(this,LinearLayoutManager.VERTICAL,false)        adapter =  IAdapter(this)        recyclerview.adapter =adapter        getData()            }    fun getData(){        var retrofit = Retrofit.Builder()                .baseUrl("http://japi.juhe.cn")                .addCallAdapterFactory(RxJava2CallAdapterFactory.create())                .build()        var iservice : IService =  retrofit.create(IService::class.java)        iservice.getData()                .subscribeOn(Schedulers.io())                .observeOn(AndroidSchedulers.mainThread())                .subscribe( {                    next ->                    var result =  next.string()                    println(result)                    var gson = Gson()                    var bean = gson.fromJson(result,Bean::class.java)                    adapter.addData(bean)                } , {                    t ->                } )//        iservice.getData()//                .subscribeOn(Schedulers.io())//                .observeOn(AndroidSchedulers.mainThread())//                .subscribe({//                    next ->////                    // onnext////                },{//                    t ->////                    error//                },{////                    oncomplete//                },{//                    d ->////                    d.dispose()//                })    }}

适配器IAdapter

package com.example.muhanxi.kotlindemoimport android.content.Contextimport android.support.v7.widget.RecyclerViewimport android.view.LayoutInflaterimport android.view.Viewimport android.view.ViewGroupimport android.widget.ImageViewimport android.widget.TextViewimport com.bumptech.glide.Glide/** * Created by muhanxi on 17/12/14. */class IAdapter(context1 : Context) : RecyclerView.Adapter<IAdapter.IViewHodler>() {    var context : Context = context1    var list : ArrayList<Book> = ArrayList()    fun addData(bean : Bean) {        list.addAll(bean.result.bookList)        notifyDataSetChanged()    }    override fun onCreateViewHolder(parent: ViewGroup?, viewType: Int): IViewHodler {//        TODO("not implemented") //To change body of created functions use File | Settings | File Templates.        var view = LayoutInflater.from(context).inflate(R.layout.layout,parent,false)        return IViewHodler(view)    }    override fun onBindViewHolder(holder: IViewHodler?, position: Int) {//        TODO("not implemented") //To change body of created functions use File | Settings | File Templates.        holder!!.item_textview.setText(list.get(position).name)        Glide.with(context).load(list.get(position).coverImg).into(holder!!.item_imageview)    }    override fun getItemCount(): Int {//        TODO("not implemented") //To change body of created functions use File | Settings | File Templates.        return list.size    }    class IViewHodler(view : View) : RecyclerView.ViewHolder(view) {       lateinit var item_imageview : ImageView        lateinit var item_textview : TextView        init {            item_imageview = view.findViewById(R.id.item_imageview)            item_textview = view.findViewById(R.id.item_textview)        }//        constructor(view : View) : super(view) {//            item_imageview = view.findViewById(R.id.item_imageview)//            item_textview = view.findViewById(R.id.item_textview)//        }    }}