org.kepennar.android.client.rest.GoogleSearchActivity.java Source code

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Here is the source code for org.kepennar.android.client.rest.GoogleSearchActivity.java

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/*
 * Copyright 2011 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.kepennar.android.client.rest;

import org.kepennar.android.client.AbstractAsyncActivity;
import org.kepennar.android.client.R;
import org.springframework.web.client.RestTemplate;

import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;

/**
 * @author Roy Clarkson
 */
public class GoogleSearchActivity extends AbstractAsyncActivity {
    protected static final String TAG = GoogleSearchActivity.class.getSimpleName();

    //***************************************
    // Activity methods
    //***************************************
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        this.setContentView(R.layout.google_search_activity_layout);
    }

    @Override
    public void onStart() {
        super.onStart();

        // when this activity starts, initiate an asynchronous HTTP GET request
        new GoogleSearchTask().execute();
    }

    //***************************************
    // Private methods
    //*************************************** 
    private void refreshResults(String result) {
        if (result == null) {
            return;
        }

        TextView textViewResults = (TextView) findViewById(R.id.text_view_results);
        textViewResults.setText(result);
    }

    //***************************************
    // Private classes
    //***************************************
    private class GoogleSearchTask extends AsyncTask<Void, Void, String> {
        @Override
        protected void onPreExecute() {
            // before the network request begins, show a progress indicator
            showLoadingProgressDialog();
        }

        @Override
        protected String doInBackground(Void... params) {
            try {
                // The URL for making the GET request
                final String url = "https://ajax.googleapis.com/ajax/services/search/web?v=1.0&q={query}";

                // Create a new RestTemplate instance
                RestTemplate restTemplate = new RestTemplate();

                // Perform the HTTP GET request to the Google search API
                String result = restTemplate.getForObject(url, String.class, "SpringSource");

                return result;
            } catch (Exception e) {
                Log.e(TAG, e.getMessage(), e);
            }

            return null;
        }

        @Override
        protected void onPostExecute(String result) {
            // hide the progress indicator when the network request is complete
            dismissProgressDialog();

            // return the list of states
            refreshResults(result);
        }
    }
}