Android Open Source - humbleshare-app Post Share Task

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License

The source code is released under:

Copyright (C) 2014 kautsig Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software w...

Java Source Code

package org.kautsig.humbleshare;
//  www  . j  av  a 2 s . c  o  m
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.HashMap;
import java.util.Map;

import org.apache.http.HttpResponse;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.ByteArrayEntity;

import android.content.Context;
import android.content.SharedPreferences;
import android.os.AsyncTask;
import android.preference.PreferenceManager;
import android.text.TextUtils;
import android.util.Log;
import android.widget.Toast;

import com.google.gson.GsonBuilder;

/**
 * Task for handling webservice request asynchronously.
 */
class PostShareTask extends AsyncTask<String, Void, String> {

  /** The logger tag. */
  private static final String TAG = "HumbleShareActivity";

  /** The main activity instance. */
  private final HumbleShareActivity genericShareActivity;

  /**
   * Constructor.
   *
   * @param genericShareActivity
   *            the main activity
   */
  public PostShareTask(HumbleShareActivity genericShareActivity) {
    this.genericShareActivity = genericShareActivity;
  }

  /**
   * {@inheritDoc}
   */
  @Override
  protected String doInBackground(String... params) {
    return requestWebService(params[0], params[1], params[2]);
  }

  /**
   * {@inheritDoc}
   */
  @Override
  protected void onPostExecute(String result) {
    Toast.makeText(genericShareActivity.getApplicationContext(), result, Toast.LENGTH_SHORT).show();
  }

  /**
   * Sends the texts to the configured webservice.
   *
   * @param type
   *            the share type
   * @param timestamp
   *            the timestamp
   * @param sharedText
   *            the text to share
   */
  protected String requestWebService(String type, String timestamp, String sharedText) {
    try {
      // Read the configuration
      Context context = genericShareActivity.getApplicationContext();
      SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
      String wsUrl = prefs.getString(ConfigKeys.WEBSERVICE_URL, "");
      String wsUser = prefs.getString(ConfigKeys.WEBSERVICE_USER, "");
      String wsPass = prefs.getString(ConfigKeys.WEBSERVICE_PASSWORD, "");

      // Construct the JSON String
      Map<String, String> comment = new HashMap<String, String>();
      comment.put("type", type);
      comment.put("timestamp", timestamp);
      comment.put("content", sharedText);
      String json = new GsonBuilder().create().toJson(comment, Map.class);

      // Construct the http request
      HttpPost httpPost = new HttpPost(wsUrl);
      httpPost.setHeader("Accept", "application/json");
      httpPost.setHeader("Content-type", "application/json");
      byte[] utf8JsonString = json.getBytes("UTF8");
      httpPost.setEntity(new ByteArrayEntity(utf8JsonString));

      // Construct the client and execute the request
      URI uri = new URI(wsUrl);

      // Remind: The trusting client falls back to default behavior if no keystore is found
      TrustingHttpClient client = new TrustingHttpClient(genericShareActivity.getApplicationContext());

      // Optional basic authentication
      if (!TextUtils.isEmpty(wsUser) && !TextUtils.isEmpty(wsPass)) {
        AuthScope authScope = new AuthScope(uri.getHost(), uri.getPort(), AuthScope.ANY_SCHEME);
        UsernamePasswordCredentials credentials = new UsernamePasswordCredentials(wsUser, wsPass);
        client.getCredentialsProvider().setCredentials(authScope, credentials);
      }

      // Execute the request
      HttpResponse response = client.execute(httpPost);

      // Provide user feedback based on the http status code
      if (response.getStatusLine().getStatusCode() != 201) {
        // In case of error, let the user know the response status code
        return "Server responded with status code " + response.getStatusLine().getStatusCode();
      } else {
        // If id did work so far, we show a success message
        return "Shared item successfully.";
      }

    } catch (IOException ioe) {
      Log.e(TAG, ioe.getMessage(), ioe);
      return ioe.getMessage();
    } catch (URISyntaxException use) {
      Log.e(TAG, use.getMessage(), use);
      return use.getMessage();
    }
  }
}

Java Source Code List

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