How to call retrofit without back slash in baseUrl

Question

I have two activity and in First Activity I am calling api with retrofit

 private fun retrofitConfiguration() {
        retrofit = Retrofit.Builder()
            .baseUrl("https://abhi-debug.github.io/")
            .addConverterFactory(GsonConverterFactory.create())
            .build()
    }

and Api Interface -

 interface ApiService {


      @GET("Caption/caption_home.json")
      fun fetchUser() : Call<List<Captions>>


      @GET(" ")
      fun fetchData(): Call<List<Data>>
    }

so it give me a json like this-

 [
     {

        "id": 14,
        "title": "Demo",
        "url": "https://abhi-debug.github.io/Caption/demo.json"
     }
    ]

Here the url-"https://abhi-debug.github.io/Caption/demo.json" will pass in next activity as BaseUrl of Retrofit for Next Activity.

private fun retrofitConfiguration() {
        retrofit = Retrofit.Builder()
            .baseUrl(**myUrl**)
            .addConverterFactory(GsonConverterFactory.create())
            .build()
    }

myUrl is getting from (FirstActivity)json like this-

myUrl = intent.getStringExtra("URL")

in FirstActivity

 urlForNextActivity[pos] = captionsList[pos].url


  val intent = Intent(context, **SecondActivity**::class.java)
    intent.putExtra("URL", urlForNextActivity[position])
    context.startActivity(intent)

Error at runtime

Caused by: java.lang.IllegalArgumentException: baseUrl must end in /: https://abhi-debug.github.io/Caption/demo.json

Note- https://abhi-debug.github.io/Caption/demo.json is fixed it cant have / at end

So is there any way to call it

your base url should be baseUrl = "https://abhi-debug.github.io/" [Note : the url is showing as link in SO comment, so open the link and copy from browser] — darwin, Nov 28 '19 at 08:20
you can take a look at this explanation : https://stackoverflow.com/questions/38758570/retrofit-trailing-slash-on-relative-urls — liorlis, Nov 28 '19 at 08:20
You need to extract the Base Url from the first json (substring). In this case is every thing from position 0 to the third "/" — Duy Khanh Nguyen, Nov 28 '19 at 08:29
Check https://stackoverflow.com/questions/36634466/retrofit-2-0-request-get-to-a-json-file-as-endpoint — Amanpreet Kaur, Nov 28 '19 at 11:19

score -1 · Answer 1 · answered Nov 28 '19 at 08:37

-1

Your baseUrl must be in https://abhi-debug.github.io/ this format.

If you have last / (i.e Forward slash) missing it gives you error.

answered Nov 28 '19 at 08:37

Ashish

77
11

score -1 · Answer 2 · answered Nov 28 '19 at 08:40

You can add the "/" to your base url statically or use .plus("/") after your base url variable

ex.

val baseUrl = "abhi-debug.github.io/" //to add it statically
val baseUrl2 = "abhi-debug.github.io".plus("/") // to add dynamically
val baseUrlNoSlash = "abhi-debug.github.io" //when you have no access to base url
var baseUrlWithSlash = baseUrlNoSlash.plus("/") //now your url has slash at the end

I hope this helped, Panos.

How to call retrofit without back slash in baseUrl

2 Answers2