1.依赖
implementation 'com.squareup.okhttp3:okhttp:3.11.0'
implementation 'com.squareup.okio:okio:1.11.0'
implementation 'com.squareup.okhttp3:logging-interceptor:3.11.0'
2.创建一个工具类(使用单例模式)
public class OkHttpUtils {
private static volatile OkHttpUtils mInstance;
private OkHttpClient mClient;
private Handler mHandler = new Handler(Looper.getMainLooper());
/**
* 第一步,写一个单例,这里用的懒汉式,也可以使用饿汉
* @return
*/
public static OkHttpUtils getInstance() {
if (mInstance == null) {
synchronized (OkHttpUtils.class) {
if (null == mInstance) {
mInstance = new OkHttpUtils();
}
}
}
return mInstance;
}
/**
* 完成构造方法,OkHttpClient
*/
private OkHttpUtils() {
HttpLoggingInterceptor interceptor = new HttpLoggingInterceptor();
interceptor.setLevel(HttpLoggingInterceptor.Level.BODY);
/**
* 使用构造者模式
* 设置连接超时
* 读取超时
* 写超时
* 添加拦截器
*/
mClient = new OkHttpClient.Builder()
.connectTimeout(10, TimeUnit.SECONDS)
.readTimeout(10, TimeUnit.SECONDS)
.writeTimeout(10, TimeUnit.SECONDS)
.addInterceptor(interceptor)
.build();
}
/**
* 网络同步方法
* 创建一个get请求
* 设置一个路径
*
* 通过mClient.newCall建一个Call对象
* 调用同步请求方法
*
* @param url
* @param callBack
* @param clazz
* @return
* @throws IOException
*/
public String getExecute(String url, final ICallBack callBack, final Class clazz) throws IOException {
Request request = new Request.Builder()
.get()
.url(url)
.build();
Call call = mClient.newCall(request);
Response response = call.execute();
return byte2String(response.body().bytes());
}
/**
* 异步的get方法
* 创建一个请求
* 创建一个call
* 调用异步请求
*
* @param url
* @param callBack
* @param clazz
*/
public void getEnqueue(final String url, final ICallBack callBack, final Class clazz) {
Request request = new Request.Builder()
.get()
.url(url)
.build();
Call call = mClient.newCall(request);
call.enqueue(new Callback() {
//网络请求连接失败
@Override
public void onFailure(Call call, final IOException e) {
mHandler.post(new Runnable() {
@Override
public void run() {
callBack.failed(e);
}
});
}
//网络请求连接成功
@Override
public void onResponse(Call call, Response response) throws IOException {
String result = response.body().string();
Gson gson = new Gson();
final Object o = gson.fromJson(result, clazz);
mHandler.post(new Runnable() {
@Override
public void run() {
callBack.success(o);
}
});
}
});
}
private static String byte2String(byte[] bytes) {
return new String(bytes);
}