functions.java

private void getGiphy (String searchString) {
        //URL Format: http://api.giphy.com/v1/gifs/search?q=cute+cat&api_key=dc6zaTOxFJmzC&limit=1&offset=0
        //Random Search URL: http://api.giphy.com/v1/gifs/random?api_key=dc6zaTOxFJmzC&tag=cute+funny+cat+kitten
        String apiKey = "dc6zaTOxFJmzC"; //Giphy's Public API Key

        String giphyUrl =
                "http://api.giphy.com/v1/gifs/random" +
                        "?tag=" +
                        searchString +
                        "&api_key=" +
                        apiKey;


        if (isNetworkAvailable()) {

            Log.d(TAG, giphyUrl);

            OkHttpClient client = new OkHttpClient();
            Request request = new Request.Builder()
                    .url(giphyUrl)
                    .build();

            Call call = client.newCall(request);
            call.enqueue(new Callback() {


                @Override
                public void onFailure(Call call, IOException e) {

                }

                @Override
                public void onResponse(Call call, Response response) throws IOException {
                    try {
                        String jsonData = response.body().string();
                        if (response.isSuccessful()) {
                            final String gif_url = getGifURL(jsonData);
                            Log.v(TAG, "Giphy Gif Data from Response: " + gif_url);

                            runOnUiThread(new Runnable() {
                                @Override
                                public void run() {
                                    //updateDisplay(gif_url);

                                    Glide.with(MainActivity.this)
                                            .load(gif_url)
                                            .thumbnail(0.1f)
                                            .diskCacheStrategy(DiskCacheStrategy.SOURCE)
                                            .fitCenter()
                                            .into(new GlideDrawableImageViewTarget(imageView) {
                                                @Override
                                                public void onResourceReady(GlideDrawable resource, GlideAnimation<? super GlideDrawable> animation) {
                                                    super.onResourceReady(resource, animation);


                                                    button.setText("Search");
                                                    button.setEnabled(true);

                                                }
                                            });
                                }
                            });
                        } else {
                            Log.i(TAG, "Response Unsuccessful");
                        }
                    }
                    catch (IOException e) {
                        Log.e(TAG, "Exception Caught: ", e);
                    }
                    catch (JSONException e) {
                        e.printStackTrace();
                    }
                }
            });
        } else {
            Toast.makeText(this, "Network is not available!", Toast.LENGTH_LONG).show();
        }

    }

    private String getGifURL(String jsonData) throws JSONException {
        JSONObject giphy = new JSONObject(jsonData);
        JSONObject data = giphy.getJSONObject("data");
        return data.getString("image_url");
    }

    private boolean isNetworkAvailable() {
        ConnectivityManager manager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo networkInfo = manager.getActiveNetworkInfo();
        boolean isAvailable = false;
        if (networkInfo != null && networkInfo.isConnected()) {
            isAvailable = true;
        }
        return isAvailable;
    }