OKhttp拦截器

1. 导入依赖

    //OKHttp拦截器
    implementation 'com.squareup.okhttp3:logging-interceptor:3.11.0'
   

2. 创建HttpLoggingInterceptor实例

    val interceptor = HttpLoggingInterceptor(HttpLoggingInterceptor.Logger { message ->
        try {
            val text = URLDecoder.decode(message, "utf-8")
            Log.e("HttpLoggingInterceptor", text)
        } catch (e: UnsupportedEncodingException) {
            e.printStackTrace()
            Log.e("HttpLoggingInterceptor", message)
        }
    })
    //这行必须加 不然默认不打印
    interceptor.level = HttpLoggingInterceptor.Level.BODY
   

3. 创建OkHttpClient,并添加拦截器

    val okHttpClient= OkHttpClient.Builder()
        .connectTimeout(20, TimeUnit.SECONDS)
        .writeTimeout(20, TimeUnit.SECONDS)
        .readTimeout(20, TimeUnit.SECONDS)
        .retryOnConnectionFailure(true)
        .addInterceptor(interceptor)
        .build()
   

4. 创建retrofit实例,并设置OkHttpClient

    var retrofit = Retrofit.Builder()
        .baseUrl(BASE_URL)
        .addConverterFactory(GsonConverterFactory.create())
        .client(okHttpClient)
        .build()
   

ApiServece封装

    public interface ApiService {
        @GET("category-list")
        Call<AppCategoryBean> getCategory();
    
        @GET("category")
        Call<AppCategoryDetailBean> getCategoryDetail(@Query("id") int id);
        
        @GET("info")
        Call<AppDetailBean> getAppdetail(@Query("appid") int appid);
    }

Retrofit简单封装

 public class RetrofitHelper {
    
        private static final String BASE_URL = "这里是baseUrl";
        private static RetrofitHelper retrofitHelper;
        public Retrofit retrofit;
        private RetrofitHelper() {
            retrofit = new Retrofit.Builder()
                    .baseUrl(BASE_URL)
                    .addConverterFactory(GsonConverterFactory.create())
                    .client(getOkHttpClient())
                    .build();
        }
    
        public static RetrofitHelper getInstance() {
            if (retrofitHelper == null) {
                synchronized (RetrofitHelper.class) {
                    if (retrofitHelper == null) {
                        retrofitHelper = new RetrofitHelper();
                    }
                }
            }
            return retrofitHelper;
        }
        
    
        private OkHttpClient getOkHttpClient() {
            // 定制OkHttp
            OkHttpClient.Builder httpClientBuilder = new OkHttpClient.Builder();
            // OkHttp进行添加拦截器loggingInterceptor
            if (BuildConfig.DEBUG) {
                httpClientBuilder.addInterceptor(getHttpLoggingInterceptor());
    //            httpClientBuilder.addNetworkInterceptor(new LoggingInterceptor());
            }
            httpClientBuilder.connectTimeout(20, TimeUnit.SECONDS)
                    .writeTimeout(20, TimeUnit.SECONDS)
                    .readTimeout(20, TimeUnit.SECONDS)
                    .retryOnConnectionFailure(true);
            return httpClientBuilder.build();
        }
    
        private HttpLoggingInterceptor getHttpLoggingInterceptor() {
            HttpLoggingInterceptor loggingInterceptor = new HttpLoggingInterceptor(
                    new HttpLoggingInterceptor.Logger() {
                        @Override
                        public void log(String message) {
                            Log.v("HttpInterceptor==", message);
                        }
                    });
            loggingInterceptor.setLevel(HttpLoggingInterceptor.Level.BODY);
            return loggingInterceptor;
        }
    
        public void getAppCategory(final Callback<AppCategoryBean> callback){
            ApiService apiService = retrofit.create(ApiService.class);
            Call<AppCategoryBean> categoryCall = apiService.getCategory();
            categoryCall.enqueue(new Callback<AppCategoryBean>() {
                @Override
                public void onResponse(Call<AppCategoryBean> call, Response<AppCategoryBean> response) {
                    callback.onResponse(call,response);
                }
    
                @Override
                public void onFailure(Call<AppCategoryBean> call, Throwable t) {
                    callback.onFailure(call,t);
                }
            });
    
        }
    
    }

使用缓存

RxCache==> 使用方法

使用retrofit的封装(Kotlin)

    val retrofitHelper = RetrofitHelper.getInstance()
    retrofitHelper.getAppCategory(object :Callback<AppCategoryBean> {
        override fun onFailure(call: Call<AppCategoryBean>, t: Throwable) {
            LogUtils.e(t.message)
        }

        override fun onResponse(call: Call<AppCategoryBean>, response: Response<AppCategoryBean>) {
            tv_content.text = response.body().toString()
        }
    })