br.edu.fpu.exemploauth.MainActivity.java Source code

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Here is the source code for br.edu.fpu.exemploauth.MainActivity.java

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/*
 * 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 br.edu.fpu.exemploauth;

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;

import org.springframework.http.HttpAuthentication;
import org.springframework.http.HttpBasicAuthentication;
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.json.MappingJacksonHttpMessageConverter;
import org.springframework.web.client.HttpClientErrorException;
import org.springframework.web.client.ResourceAccessException;
import org.springframework.web.client.RestTemplate;

import java.util.Collections;

public class MainActivity extends AbstractAsyncActivity {

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

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

        // Initiate the request to the protected service
        final Button submitButton = (Button) findViewById(R.id.submit);
        submitButton.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                new FetchSecuredResourceTask().execute();
            }
        });
    }

    // ***************************************
    // Private methods
    // ***************************************
    private void displayResponse(Message response) {
        Toast.makeText(this, response.getText(), Toast.LENGTH_LONG).show();
    }

    // ***************************************
    // Private classes
    // ***************************************
    private class FetchSecuredResourceTask extends AsyncTask<Void, Void, Message> {

        private String username;

        private String password;

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

            // build the message object
            EditText editText = (EditText) findViewById(R.id.username);
            this.username = editText.getText().toString();

            editText = (EditText) findViewById(R.id.password);
            this.password = editText.getText().toString();
        }

        @Override
        protected Message doInBackground(Void... params) {
            final String url = getString(R.string.base_uri) + "/getmessage";

            // Populate the HTTP Basic Authentitcation header with the username and password
            HttpAuthentication authHeader = new HttpBasicAuthentication(username, password);
            HttpHeaders requestHeaders = new HttpHeaders();
            requestHeaders.setAuthorization(authHeader);
            requestHeaders.setAccept(Collections.singletonList(MediaType.APPLICATION_JSON));

            RestTemplate restTemplate = new RestTemplate();
            restTemplate.getMessageConverters().add(new MappingJacksonHttpMessageConverter());

            try {
                // Make the network request
                Log.d(TAG, url);
                ResponseEntity<Message> response = restTemplate.exchange(url, HttpMethod.GET,
                        new HttpEntity<Object>(requestHeaders), Message.class);

                return response.getBody();
            } catch (HttpClientErrorException e) {
                Log.e(TAG, e.getLocalizedMessage(), e);
                return new Message(0, e.getStatusText(), e.getLocalizedMessage());
            } catch (ResourceAccessException e) {
                Log.e(TAG, e.getLocalizedMessage(), e);
                return new Message(0, e.getClass().getSimpleName(), e.getLocalizedMessage());
            }
        }

        @Override
        protected void onPostExecute(Message result) {
            dismissProgressDialog();
            displayResponse(result);
        }
    }

}