Android Open Source - SharedUrlList Util

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License

The source code is released under:

GNU General Public License

Java Source Code

package de.laxu.apps.sharedurllist;
/*from   w  ww. ja  va2  s.  c o  m*/
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.util.ArrayList;

import org.apache.http.HttpResponse;
import org.apache.http.StatusLine;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;

import android.app.Activity;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.preference.PreferenceManager;
import android.support.v4.app.NotificationCompat;
import android.support.v4.app.NotificationCompat.Builder;

public abstract class Util  {

  public static String loadFromURL(Activity activity, String url)
      throws LoadException {
        String text="";
        ConnectivityManager cm = (ConnectivityManager) activity
            .getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo ni = cm.getActiveNetworkInfo();
        if (ni != null && ni.isConnected()) {
          if(url == null || url.equals("")){
            throw new LoadException("no URL given.");
          }
          try {
            HttpClient client = new DefaultHttpClient();
            HttpResponse response = client.execute(new HttpGet(url));
            StatusLine statusLine = response.getStatusLine();
            int statusCode = statusLine.getStatusCode();
      
            if (statusCode == 200) {
              BufferedReader reader = new BufferedReader(
                  new InputStreamReader(response.getEntity()
                      .getContent()));
              String line;
              while ((line = reader.readLine()) != null) {
                text += line;
              }
            } else {
              throw new LoadException("HTTPError " + Integer.toString(statusCode));
            }
          } catch (MalformedURLException e) {
            throw new LoadException("invalid URL");
          } catch (IOException e) {
            throw new LoadException("network Error: "+e.toString());
          }
        } else {
          throw new LoadException("no network");
        }
        return text;
      }
  public static boolean hasSettingsErrors(MainActivity mainActivity){
    SharedPreferences sharedPrefs = PreferenceManager.getDefaultSharedPreferences(mainActivity);
    String serverURL = sharedPrefs.getString("pref_serverurl", "");
    String username = sharedPrefs.getString("pref_username", "");
    String devicename = sharedPrefs.getString("pref_devicename", "");
    
    return (
      (!serverURL.startsWith("https://") && !serverURL.startsWith("http://"))
      || username.equals("")
      || devicename.equals("")
    );
  }
  public static String getSettingsErrors(MainActivity mainActivity) {
    ArrayList<String> errorItems = new ArrayList<String>();
    SharedPreferences sharedPrefs = PreferenceManager.getDefaultSharedPreferences(mainActivity);
    String errorString = "";
    String serverURL = sharedPrefs.getString("pref_serverurl", "");
    String username = sharedPrefs.getString("pref_username", "");
    String devicename = sharedPrefs.getString("pref_devicename", "");
    
    if(serverURL.equals("")){
      errorItems.add("Server-URL");
    }
    if(username.equals("")){
      errorItems.add("Username");
    }
    if(devicename.equals("")){
      errorItems.add("device name");
    }
    if(errorItems.size() >0){
      errorString += "No " + buildCommaList(errorItems) +" set.";
    }else if(!serverURL.startsWith("https://") && !serverURL.startsWith("http://")){
      if(!errorString.equals(""))
        errorString += "\n";
      errorString += "Server-URL does not start with \"https://\" or \"http://\".";
    }
    return errorString;
  }
  private static String buildCommaList(ArrayList<String> errorItems){
    String commaString="";
    for(int i=0;i<errorItems.size(); i++){
      if(i==0){ // first
        commaString += errorItems.get(i);
      }else if(i==errorItems.size()-1){ // last
        commaString += " and " + errorItems.get(i);
      }else{
        commaString += ", "+errorItems.get(i);
      }
    }
    return commaString;
  }
  private static final int NOTIFICATION_ID = 1;
  public static void createNotification(Activity activity, String title, String text, int icon, boolean progress){
    NotificationManager notificationManager = ((NotificationManager)activity.getSystemService(Context.NOTIFICATION_SERVICE));
    notificationManager.cancelAll();
    Intent newIntent = new Intent(activity.getApplicationContext(), MainActivity.class).setFlags(Intent.FLAG_ACTIVITY_NEW_TASK|Intent.FLAG_ACTIVITY_CLEAR_TOP);
    PendingIntent pIntent = PendingIntent.getActivity(activity, 0, newIntent, 0);
    Builder builder = new NotificationCompat.Builder(activity);
    builder
    .setSmallIcon(icon)
    .setContentTitle(title)
    .setContentText(text)
    .setAutoCancel(true)
    .setTicker(title+": "+text)
    .setContentIntent(pIntent)
    ;
    if(progress){
      builder.setProgress(1, 0, true);
    }
    Notification notification = builder.build();
    notificationManager.notify(NOTIFICATION_ID, notification);
  }

  public static void removeNotifications(Activity activity){
    ((NotificationManager)activity.getSystemService(Context.NOTIFICATION_SERVICE))
    .cancel(NOTIFICATION_ID);
  }
  public Util() {
    super();
  }

}

Java Source Code List

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