public class HttpUtil {static HttpUtil util;private final OkHttpClient client;// 私有化構造方法private HttpUtil(){client = new OkHttpClient();}public static HttpUtil getInstance(){if(util == null){synchronized (HttpUtil.class){util = new HttpUtil();}}return util;}

public void httRequest(String url,final HttpRespon respon) {Request request = new Request.Builder().url(url).build();client.newCall(request).enqueue(new Callback() {// 請求失敗 @Overridepublic void onFailure(Call call, IOException e) {e.printStackTrace();respon.onError("請求網絡失敗");}// 有響應 @Overridepublic void onResponse(Call call, Response response) throws IOException {if (!response.isSuccessful()) {respon.onError("請求網絡失敗");}// 獲取響應bodyString json = response.body().string(); // 解析Json respon.parse(json); }});}}

定義的回調接口:

public abstract class HttpRespon<T> {//http返回的類型的泛型Class<T> t;public HttpRespon(Class<T> t){this.t = t;}// 請求失敗時，回調的方法public abstract void onError(String msg); // 請求成功時，回調的方法public abstract void onSuccess(T t);public void parse(String json){if(TextUtils.isEmpty(json)){//請求失敗onError("連接網絡失敗");return;}if(t == String.class){onSuccess((T) json);return;}T result = JsonUtil.parse(json, this.t);if(result == null){onError("Json解析失敗");}else{onSuccess(result);}} }

?調用的事例:

HttpUtil.getInstance().httRequest(Constant.SPLASH_URL, new HttpRespon<Ad>(Ad.class) {@Overridepublic void onError(String msg) {Log.i("fjl", msg);}@Overridepublic void onSuccess(Ad ad) {Intent intent = new Intent();intent.setClass(AdsActivity.this, AdDownloadService.class);intent.putExtra(AdDownloadService.AD_DATA, ad);startService(intent);}});

?

轉載于:https://www.cnblogs.com/kliver123/p/8761846.html

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