retrofit interceptor body 加密_Kotlin+Retrofit+Recyclerview的使用以及示例代码

大家好，我是小黑，一个还没秃头的程序员~~~你必须特别努力，才能显得毫不费力。今天的文章是为了前段时间学习kotlin所进行的接口对接，使用的网络数据传输框架为Retrofit，使用的接口为玩Android的开放接口,项目地址：https://gitee.com/fjjxxy/kotlin_retrofit.git

知识体系下的文章https://www.wanandroid.com/article/list/0/json?cid=60方法：GET参数：cid 分类的id，上述二级目录的id      页码：拼接在链接上，从0开始。      获取公众号列表https://wanandroid.com/wxarticle/chapters/json  方法：GET

需要申请的权限

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

需要添加的依赖

def retrofit_version = '2.6.1'//----------------- retrofit begin -----------------implementation "com.squareup.retrofit2:retrofit:$retrofit_version"implementation "com.squareup.retrofit2:converter-gson:$retrofit_version"implementation "com.squareup.retrofit2:converter-scalars:$retrofit_version"// ---- okhttp ----implementation 'com.squareup.okhttp3:logging-interceptor:3.11.0'// ---- okhttp ----//----------------- retrofit end   -----------------implementation 'androidx.recyclerview:recyclerview:1.0.0'

先来看一下效果图

效果图中由两个列表组成，上个列表对接第一个接口，下个列表对接第二个接口，好了，接下来是代码展示

(一)定义一个实体类Result，用来接收接口返回的数据

class Result<T> {    var errorCode: String? = null    var errorMsg: String? = null    var data: T? = null}

(二)定义一个接口Api，使用注解的方式为retrofit提供Restful风格的Api，各种注解的使用方式这里就不一一列举了，请大家自行百度

interface Api {    /**     * 微信公众号列表     */    @GET("wxarticle/chapters/json")    fun getwxarticle(): Call>>    /**     * 文章列表     */    @GET("article/list/{page}/json")    fun getArticle(@Path("page") page: String, @Query("cid") cid: String): Call>}

(三)封装接口请求工具类HttpHelper,获取 retrofit对象以及Api服务，设置 拦截器以及处理日志 ，代码如下 

/** * 接口请求工具类 */class HttpHelper {    companion object {        private val BASE_URL = "https://www.wanandroid.com/" //服务器地址        private var sHttpClient: OkHttpClient? = null        private var sApi: Api? = null        /**         * 添加拦截器，对返回的数据或者日志进行处理，对请求添加统一头部         */        fun getHttpClient(): OkHttpClient? {            if (sHttpClient == null) {                synchronized(HttpHelper::class.java) {                    if (sHttpClient == null) {                        val builder = OkHttpClient.Builder()                        //添加拦截器                        var interceptor = HttpLoggingInterceptor(                            HttpLoggingInterceptor.Logger { message ->                                //对日志进行处理                                Log.e("Tag", message)                            }                        )                        interceptor.setLevel(HttpLoggingInterceptor.Level.BODY)                        builder.addInterceptor(interceptor)                        builder.addInterceptor { chain ->                            val request = chain.request()                            val compressedRequest =                                request.newBuilder()                                    //添加头部                                    .addHeader(                                        "User-Agent",                                        "Android"                                    )                                    .build()                            chain.proceed(compressedRequest)                        }                        sHttpClient = builder                            .callTimeout(40, TimeUnit.SECONDS)                            .connectTimeout(40, TimeUnit.SECONDS)                            .readTimeout(40, TimeUnit.SECONDS)                            .writeTimeout(40, TimeUnit.SECONDS)                            .build()                    }                }            }            return sHttpClient        }        /**         * 获取接口服务         */        fun getApi(): Api? {            if (sApi == null) {                synchronized(HttpHelper::class.java) {                    if (sApi == null) {                        val retrofit = createRetrofit(BASE_URL)                        sApi = retrofit.create(Api::class.java)                    }                }            }            return sApi        }        /**         * 获取Retrofit对象，定义返回类型的转换器         */        private fun createRetrofit(baseUrl: String): Retrofit {            val gsonBuilder = GsonBuilder()            return Retrofit.Builder()                .client(getHttpClient())                .baseUrl(baseUrl)                .addConverterFactory(ScalarsConverterFactory.create())                .addConverterFactory(GsonConverterFactory.create(gsonBuilder.create()))                .build()        }    }}

(四)封装接口回调类SingleCallback，处理数据返回成功和失败状态的数据

/** * 接口请求基本回调 */abstract class SingleCallback<T : Result>?> :    Callback<T> {    //接口请求成功    override fun onResponse(        call: Call<T>,        response: Response<T>    ) {        val result = response.body()        if (result == null) {            onFailure("-99", "请求异常", null)        } else {            if (apiFailure(result)) {                onFailure(result.errorCode, result.errorMsg ?: "", result)            } else {                onSuccess(result)            }        }    }    override fun onFailure(call: Call<T>, t: Throwable) {        Log.e("SingleCallback", "onFailure: " + t.message, t)    }    fun successCode(): String {        return "0"    }    fun apiFailure(result: T?): Boolean {        return result == null || successCode() != result.errorCode    }    /**     * 失败回调。默认已经将失败信息提示出来     */    fun onFailure(code: String?, message: String, response: T?) {        Toast.makeText(App.getContext(), message, Toast.LENGTH_SHORT).show()    }    abstract fun onSuccess(response: T)}

(五)设计列表界面以及子项布局activity_main.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    tools:context=".MainActivity">    <androidx.recyclerview.widget.RecyclerView        android:id="@+id/rv_article_data"        android:layout_width="match_parent"        android:layout_height="0dp"        android:layout_weight="1" />    <androidx.recyclerview.widget.RecyclerView        android:id="@+id/rv_user_data"        android:layout_width="match_parent"        android:layout_height="0dp"        android:layout_weight="1" />LinearLayout>

item_article.xml

<?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"    android:background="#fff">    <TextView        android:id="@+id/tv_article"        android:layout_width="match_parent"        android:layout_height="40dp"        android:text=""        android:textSize="14dp" />LinearLayout>

item_user.xml

<?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"    android:background="#fff">    <TextView        android:id="@+id/tv_user"        android:layout_width="match_parent"        android:layout_height="40dp"        android:text=""        android:textSize="14dp" />LinearLayout>

(六)实体类Article实体类

class Article {   var datas: List? = null}

ArticleData实体类

val title: String? = null

User实体类

val name: String? = nul

(七)逻辑以及数据适配器代码编写MainActivity.kt

class MainActivity : AppCompatActivity() {    private val mUserList: MutableList = ArrayList()    private var mArticleList: MutableList = ArrayList();    override fun onCreate(savedInstanceState: Bundle?) {        super.onCreate(savedInstanceState)        setContentView(R.layout.activity_main)        //或者这里可以不用findViewById,直接用布局中的id作为变量名也可以        var rvArticleData: RecyclerView = findViewById(R.id.rv_article_data)        var rvUserData: RecyclerView = findViewById(R.id.rv_user_data)        rvArticleData.layoutManager = LinearLayoutManager(this)        rvUserData.layoutManager = LinearLayoutManager(this)        rvArticleData.adapter = ArticleAdapter(this, mArticleList)        var userAdapter = UserAdapter(mUserList)        userAdapter.setOnUserClickListener(object : UserAdapter.OnUserClickListener {            override fun click(text: String?) {                Toast.makeText(applicationContext, text, Toast.LENGTH_SHORT).show()            }        })        rvUserData.adapter = userAdapter       //请求微信公众号接口        var api = HttpHelper.getApi()        api!!.getwxarticle()!!.enqueue(object : SingleCallback>>() {            override fun onSuccess(response: Result<List<User>>) {                if (response.data != null && (response.data?.size ?: 0 > 0)) {                    mUserList.addAll(response.data!!)                    rvUserData.adapter?.notifyDataSetChanged()                }            }        })        //请求文章接口        var api1 = HttpHelper.getApi()        api1!!.getArticle("1", "60")!!.enqueue(object : SingleCallback>() {            override fun onSuccess(response: Result<Article>) {                if (response.data != null && response.data?.datas != null && response.data?.datas?.size ?: 0 > 0) {                    mArticleList.addAll(response.data?.datas!!)                    rvArticleData.adapter?.notifyDataSetChanged()                }            }        })    }}

ArticleAdapter.kt

   class ArticleAdapter(var mContext: Context, var mList: List) :    RecyclerView.Adapter() {    class ViewHolder(view: View) : RecyclerView.ViewHolder(view) {        var mTvArticle: TextView = view.tv_article    }    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {        return ViewHolder(            LayoutInflater.from(parent.context).inflate(                R.layout.item_article,                parent,                false            )        )    }    override fun getItemCount(): Int {        return mList.size    }    override fun onBindViewHolder(holder: ViewHolder, position: Int) {        holder.mTvArticle.text = mList[position].title        //设置点击事件，Lambda 表达式用着真的很舒服        holder.mTvArticle.setOnClickListener {            Toast.makeText(                mContext,                mList[position].title,                Toast.LENGTH_SHORT            ).show()        }    }

UserAdapter.kt

class UserAdapter(var mList: List) :    RecyclerView.Adapter() {    class ViewHolder(view: View) : RecyclerView.ViewHolder(view) {        var mTvUser: TextView = view.tv_user    }    private var mUserClickListener: OnUserClickListener? = null    //设置点击事件回调，具体的实现在回调中定义    interface OnUserClickListener {        fun click(text: String?)    }    fun setOnUserClickListener(onUserClickListener: OnUserClickListener) {        this.mUserClickListener = onUserClickListener    }    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {        return ViewHolder(            LayoutInflater.from(parent.context).inflate(                R.layout.item_user,                parent,                false            )        )    }    override fun getItemCount(): Int {        return mList.size    }    override fun onBindViewHolder(holder: ViewHolder, position: Int) {        holder.mTvUser.text = mList[position].name        holder.mTvUser.setOnClickListener {            mUserClickListener!!.click(mList[position].name)        }    }

到此为止，Kotlin+Retrofit+Recyclerview的用法就介绍到这里了，功能的效果图如开头展示，代码已上传到码云，地址：https://gitee.com/fjjxxy/kotlin_retrofit.git，最后，祝大家身体健康，万事如意，谢谢大家的支持与阅读！