网络拦截器

/**
* 网络拦截器
*/

public class LoggingInterceptor implements Interceptor {
private static final String UA = “User-Agent”;

@Overridepublic Response intercept(Chain chain) throws IOException {    Request request = chain.request()            .newBuilder()            .addHeader(UA, makeUA())            .build();    return chain.proceed(request);}private String makeUA() {    String s = Build.BRAND + "/" + Build.MODEL + "/" + Build.VERSION.RELEASE;    return Build.BRAND + "/" + Build.MODEL + "/" + Build.VERSION.RELEASE;}

}