Youtube Get uploaded video list. FileNotFound Error

I am trying to get list of videos uploaded on my YouTube channel using following

https://www.googleapis.com/youtube/v3/search?part=snippet&channelId{MY_CHANNEL_ID}&maxResults=50&key={MY_APP_ID}

I have created App in Google App Console and generate APP ID for the same. But when I trying to access it through my Android application getting java.io.FileNotFoundException error

I have given application identifier and SHA1 also, If I try to access through Web Browser key without any other constrains it works well and returns all the video list but in case of Android it is not working.

@Override
    protected String doInBackground(Void... voids) {

        HttpURLConnection urlConnection = null;

        String urlString = "https://www.googleapis.com/youtube/v3/search?part=snippet&channelId=UCrF362wkcVnjqqPRsSEzvgg&maxResults=50&key=AIzaSyAiAFjZb1eVdRxVWnymrhuAb1iDlmYupu8";
        //urlString = "https://www.googleapis.com/youtube/v3/playlistItems?part=snippet&playlistId=PLTqSMwQKOhUhl7gm7h6YwX6XPYr0ViBtu&key=AIzaSyAiAFjZb1eVdRxVWnymrhuAb1iDlmYupu8";

        String jsonString = new String();

        URL url = null;
        try {
            url = new URL(urlString);

        urlConnection = (HttpURLConnection) url.openConnection();

        urlConnection.setRequestMethod("GET");
        urlConnection.setReadTimeout(10000 /* milliseconds */);
        urlConnection.setConnectTimeout(15000 /* milliseconds */);

        urlConnection.setDoOutput(true);

        urlConnection.connect();

        BufferedReader br=new BufferedReader(new InputStreamReader(url.openStream()));

        char[] buffer = new char[1024];

        StringBuilder sb = new StringBuilder();
        String line;
        while ((line = br.readLine()) != null) {
            sb.append(line+"\n");
        }
        br.close();

        jsonString = sb.toString();

        System.out.println("JSON: " + jsonString);

        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (ProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

        return jsonString;
    }

Error Log

BasicNetwork.performRequest: Unexpected response code 403 for https://www.googleapis.com/youtube/v3/search?part=snippet&channelId=UCrF362wkcVnjqqPRsSEzvgg&maxResults=50&key=AIzaSyAiAFjZb1eVdRxVWnymrhuAb1iDlmYupu8
05-13 15:28:26.607 19118-19151/com.jeevanmulmantra W/System.err: java.io.FileNotFoundException: https://www.googleapis.com/youtube/v3/search?part=snippet&channelId=UCrF362wkcVnjqqPRsSEzvgg&maxResults=50&key=AIzaSyAiAFjZb1eVdRxVWnymrhuAb1iDlmYupu8