Android/kotlin/http通信

サンプル

HttpRequest.kt

class HttpRequest {
    private val TAG = "HttpRequest"
    private var body = "";
    fun request(requestUrl: String): Boolean {
        if (requestUrl.isEmpty()) {
            Log.w(TAG, "URLが空です。")
            return false
        }
        val url = URL(requestUrl)
        val urlConnection = url.openConnection() as HttpURLConnection
        urlConnection.requestMethod = "GET"
        urlConnection.connect()
        val br = BufferedReader(InputStreamReader(urlConnection.inputStream))
        val sb = StringBuilder()
        for (line: String? in br.readLines()) {
            line?.let { sb.append(line) }
        }
        br.close()
        body = sb.toString()
        return true
    }
    fun getBody(): String {
        return body
    }
}

参考：https://qiita.com/naoi/items/8df1409ad48ad8f3c632