/*
* 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 org.springframework.android.showcase.AbstractAsyncActivity;
import org.springframework.android.showcase.R;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.http.converter.StringHttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.http.converter.xml.SimpleXmlHttpMessageConverter;
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
* @author Helena Edelson
* @author Pierre-Yves Ricau
*/
public class HttpPostJsonXmlActivity extends AbstractAsyncActivity {
protected static final String TAG = HttpPostJsonXmlActivity.class.getSimpleName();
// ***************************************
// Activity methods
// ***************************************
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.http_post_json_xml_activity_layout);
// Initiate the JSON POST request when the JSON button is clicked
final Button buttonJson = (Button) findViewById(R.id.button_post_json);
buttonJson.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
new PostMessageTask().execute(MediaType.APPLICATION_JSON);
}
});
// Initiate the XML POST request when the XML button is clicked
final Button buttonXml = (Button) findViewById(R.id.button_post_xml);
buttonXml.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
new PostMessageTask().execute(MediaType.APPLICATION_XML);
}
});
}
// ***************************************
// Private methods
// ***************************************
private void showResult(String result) {
if (result != null) {
// display a notification to the user with the response message
Toast.makeText(this, result, Toast.LENGTH_LONG).show();
} else {
Toast.makeText(this, "I got null, something happened!", Toast.LENGTH_LONG).show();
}
}
// ***************************************
// Private classes
// ***************************************
private class PostMessageTask extends AsyncTask<MediaType, Void, String> {
private Message message;
@Override
protected void onPreExecute() {
showLoadingProgressDialog();
// build the message object
EditText editText = (EditText) findViewById(R.id.edit_text_message_id);
message = new Message();
try {
message.setId(Integer.parseInt(editText.getText().toString()));
} catch (NumberFormatException e) {
message.setId(0);
}
editText = (EditText) findViewById(R.id.edit_text_message_subject);
message.setSubject(editText.getText().toString());
editText = (EditText) findViewById(R.id.edit_text_message_text);
message.setText(editText.getText().toString());
}
@Override
protected String doInBackground(MediaType... params) {
try {
if (params.length <= 0) {
return null;
}
MediaType mediaType = params[0];
// The URL for making the POST request
final String url = getString(R.string.base_uri) + "/sendmessage";
HttpHeaders requestHeaders = new HttpHeaders();
// Sending a JSON or XML object i.e. "application/json" or "application/xml"
requestHeaders.setContentType(mediaType);
// Populate the Message object to serialize and headers in an
// HttpEntity object to use for the request
HttpEntity<Message> requestEntity = new HttpEntity<Message>(message, requestHeaders);
// Create a new RestTemplate instance
RestTemplate restTemplate = new RestTemplate();
restTemplate.getMessageConverters().add(new StringHttpMessageConverter());
if (mediaType == MediaType.APPLICATION_JSON) {
restTemplate.getMessageConverters().add(new MappingJackson2HttpMessageConverter());
} else if (mediaType == MediaType.APPLICATION_XML) {
restTemplate.getMessageConverters().add(new SimpleXmlHttpMessageConverter());
}
// Make the network request, posting the message, expecting a String in response from the server
ResponseEntity<String> response = restTemplate.exchange(url, HttpMethod.POST, requestEntity,
String.class);
// Return the response body to display to the user
return response.getBody();
} catch (Exception e) {
Log.e(TAG, e.getMessage(), e);
}
return null;
}
@Override
protected void onPostExecute(String result) {
dismissProgressDialog();
showResult(result);
}
}
}