OkHttp单例封装类

//导okhttp依赖compile 'com.squareup.okhttp3:okhttp:3.8.1'

---

public class MyOkHttp {

private static MyOkHttp myOkHttp = new MyOkHttp();

private OkHttpClient okHttpClient;

private Cache cache;

private long maxSize = 8 * 1024 * 1024;

private MyOkHttp() {

//Environment用来管理手机SDcard内存的

File file = new File(Environment.getExternalStorageDirectory() + "/H1706A");

cache = new Cache(file, maxSize);

//OKHTTPClient两种写法 第二种就是通过构造者模式也可以使用

okHttpClient = new OkHttpClient.Builder().cache(cache).build();

}

public static MyOkHttp getMyOkHttp() {

return myOkHttp;

}

//同步下get，Post

public String sendGet(String url) throws IOException {

Request request = new Request.Builder().url(url).build();

Response response = okHttpClient.newCall(request).execute();

return response.body().string();

}

//同步下Post

public String sendPost(String url, RequestBody body) throws IOException {

Request request = new Request.Builder().url(url).post(body).build();

Response response = okHttpClient.newCall(request).execute();

return response.body().string();

}

//异步的封装 GET和POST自己 预习一下缓存OkHttp如何使用缓存

public void sendAsyncGet(String url, Callback callback) {

Request request = new Request.Builder().url(url).build();

okHttpClient.newCall(request).enqueue(callback);

}

//异步的POST

public void sendAsyncPost(String url, RequestBody body, Callback callback) {

Request request = new Request.Builder().url(url).post(body).build();

okHttpClient.newCall(request).enqueue(callback);

}

//测试缓存

public String sendCacheGet(String url) throws IOException {

//要缓存数据  需要加上一个方法cacheControl

Request request = new Request.Builder().url(url).cacheControl(new CacheControl.Builder().maxStale(24 * 60 * 60, TimeUnit.SECONDS).build()).build();

Response response = okHttpClient.newCall(request).execute();

return response.body().string();

}

}