```fun fetchJson( bookIsbn: String) { val ...

# android

[Hele]

fun fetchJson( bookIsbn: String) {
        val url = "<http://xisbn.worldcat.org/webservices/xid/isbn/>"+ bookIsbn +"?method=getMetadata&format=json&fl=*"

        val request = Request.Builder().url(url).build()

        val client = OkHttpClient()

        client.newCall(request).enqueue(object : Callback {
            override fun onFailure(call: Call?, e: IOException?) {
                println("Error in executing call")
            }

            override fun onResponse(call: Call?, response: Response?) {
                val body = response?.body()?.string()

                println(body)
                val gson = GsonBuilder().create()


                val bookList = gson.fromJson(body,BookList::class.java)
               // response?.close()
            }
        })
    }