How to change part of base url dynamically in retrofit android-CodePudding

I want to change part of base url at run time based on site selected by user. How this can be achieved using retrofit.

For eg. Base URL : https://{siteCode}.prod.com/ where siteCode will be site selected by user at run time.

Currenly I have fixed base url in build.gradle.

 production {
            versionNameSuffix "-prod"

            buildConfigField "String", "BASE_URL", "\"https://vh.prod.com/\""
        }

How this can be made dynamic using retrofit.

CodePudding user response：

You can use the @Url annotation to pass a complete URL for an endpoint.

@GET
suspend fun getData(@Url String url): ResponseBody

The @Url parameter will replace the baseUrl set while creating the Retrofit instance.

CodePudding user response：

this is possible using retrofit interceptor, you can use multiple base url ..

public class HostSelectionInterceptor implements Interceptor {
private volatile String host;

public void setHost(String host) {
    this.host = HttpUrl.parse(host).host();
}

@Override
public okhttp3.Response intercept(Chain chain) throws IOException {
    Request request = chain.request();
    String reqUrl = request.url().host();

    String host = this.host;
    if (host != null) {
        HttpUrl newUrl = request.url().newBuilder()
            .host(host)
            .build();
        request = request.newBuilder()
            .url(newUrl)
            .build();
    }
    return chain.proceed(request);
}

}