HttpGetSetRequestTimeoutActivity.java

/*
 * Copyright 2010-2014 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.springframework.android.showcase.rest;

import java.net.SocketTimeoutException;

import org.springframework.android.showcase.AbstractAsyncActivity;
import org.springframework.android.showcase.R;
import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
import org.springframework.http.converter.StringHttpMessageConverter;
import org.springframework.web.client.ResourceAccessException;
import org.springframework.web.client.RestTemplate;

import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

/**
 * @author Roy Clarkson
 */
public class HttpGetSetRequestTimeoutActivity extends AbstractAsyncActivity {

	protected static final String TAG = HttpGetSetRequestTimeoutActivity.class.getSimpleName();

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

		final Button buttonJson = (Button) findViewById(R.id.button_submit);
		buttonJson.setOnClickListener(new View.OnClickListener() {
			public void onClick(View v) {
				new RequestTask().execute();
			}
		});
	}

	// ***************************************
	// Private methods
	// ***************************************
	private void showResponse(String response) {
		if (response != null) {
			Toast.makeText(this, response, Toast.LENGTH_LONG).show();
		}
	}

	// ***************************************
	// Private classes
	// ***************************************
	private class RequestTask extends AsyncTask<Void, Void, String> {

		private String serverDelay;

		private int requestTimeout;

		@Override
		protected void onPreExecute() {
			showLoadingProgressDialog();

			EditText editText = (EditText) findViewById(R.id.edit_text_server_delay);
			this.serverDelay = editText.getText().toString();

			editText = (EditText) findViewById(R.id.edit_text_request_timeout);
			try {
				this.requestTimeout = Integer.parseInt(editText.getText().toString()) * 1000;
			} catch (NumberFormatException e) {
				this.requestTimeout = 10000; // default to 10 seconds
			}
		}

		@Override
		protected String doInBackground(Void... params) {
			try {
				// The URL for making the GET request
				final String url = getString(R.string.base_uri) + "/delay/{seconds}";

				// Initialize a request factory, setting the request timeout
				HttpComponentsClientHttpRequestFactory requestFactory = new HttpComponentsClientHttpRequestFactory();
				requestFactory.setReadTimeout(requestTimeout);

				// Create a new RestTemplate instance
				RestTemplate restTemplate = new RestTemplate(requestFactory);
				restTemplate.getMessageConverters().add(new StringHttpMessageConverter());

				// Perform the HTTP GET request
				String response = restTemplate.getForObject(url, String.class, serverDelay);

				// Return the state from the ResponseEntity
				return response;
			} catch (ResourceAccessException e) {
				Log.e(TAG, e.getMessage(), e);
				if (e.getCause() instanceof SocketTimeoutException) {
					return "Request timed out";
				}
			} catch (Exception e) {
				Log.e(TAG, e.getMessage(), e);
				return "An error occurred";
			}

			return null;
		}

		@Override
		protected void onPostExecute(String response) {
			dismissProgressDialog();
			showResponse(response);
		}

	}

}