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.创建工具类
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();
}
/**
* 创建异步post方法
* 创建表单FormBody
* 把我们取出的key和value对应的放进去
* 最后,build表单,生成RequestBody
*
* @param url 请求地址
* @param params
* @param clazz
* @param callBack
*/
public void postEnqueue(final String url, Map<String, String> params, final Class clazz, final ICallBack callBack) {
FormBody.Builder builder = new FormBody.Builder();
for (Map.Entry<String, String> entry : params.entrySet()) {
builder.add(entry.getKey(), entry.getValue());
}
RequestBody body = builder.build();
Request request = new Request.Builder()
.post(body)
.url(url)
.build();
Call call = mClient.newCall(request);
call.enqueue(new Callback() {
@Override
public void onFailure(Call call, final IOException e) {
mHandler.post(new Runnable() {
@Override
public void run() {
callBack.failed(e);
}
});
}
@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);
}
});
}
});
}