Android Open Source - hackspacewidget Hackspace Widget Config

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License

The source code is released under:

Apache License

Java Source Code

package de.ring0.hackspace;
//w  w w. ja v  a  2 s.co  m
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.lang.reflect.Type;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Map;
import java.util.Timer;
import java.util.TimerTask;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;

import android.app.AlertDialog;
import android.appwidget.AppWidgetManager;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.AsyncTask;
import android.os.Bundle;
import android.preference.CheckBoxPreference;
import android.preference.EditTextPreference;
import android.preference.ListPreference;
import android.preference.Preference;
import android.preference.Preference.OnPreferenceChangeListener;
import android.preference.PreferenceActivity;
import android.preference.PreferenceManager;

import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;

import de.ring0.hackspace.UpdateWidgetTask.RefreshStatus;
import de.ring0.hackspace.UpdateWidgetTask.TaskParameters;

public class HackspaceWidgetConfig extends PreferenceActivity {
  private final static String VERSION = "0.1";
  private final static String DIRECTORY = "http://spaceapi.net/directory.json";
    private final static Type jsonHashMap = new TypeToken<Map<String, String>>(){}.getType();

    protected SharedPreferences sp;
  protected RefreshStatus rs = null;
  protected Gson g;

  private ListPreference lp;
  private CheckBoxPreference cp;
  private EditTextPreference ep;
  
  int widgetId = AppWidgetManager.INVALID_APPWIDGET_ID;

  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    addPreferencesFromResource(R.xml.preferences);
    
    setResult(RESULT_CANCELED);
    
    sp = PreferenceManager.getDefaultSharedPreferences(this);
    
    Intent intent = getIntent();
        Bundle extras = intent.getExtras();
        if (extras != null) {
          widgetId = extras.getInt(AppWidgetManager.EXTRA_APPWIDGET_ID, AppWidgetManager.INVALID_APPWIDGET_ID);
          g = new Gson();
          rs = g.fromJson(sp.getString("refreshStatus", ""), RefreshStatus.class);
        }

        
        if (widgetId == AppWidgetManager.INVALID_APPWIDGET_ID) {
            finish();
        }
        
    lp = (ListPreference) findPreference("predefined_hackspace");
    ep = (EditTextPreference) findPreference("custom_url");
    cp = (CheckBoxPreference) findPreference("custom_hackspace");

        new LoadLatestDirectory().execute(DIRECTORY);

    ep.setEnabled(cp.isChecked());

    lp.setOnPreferenceChangeListener(new OnPreferenceChangeListener() {
      public boolean onPreferenceChange(Preference arg0, Object arg1) {
        AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(getBaseContext());
            new UpdateWidgetTask().execute(new TaskParameters(getBaseContext(), appWidgetManager, widgetId)); 
        
              Intent resultValue = new Intent();
              resultValue.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, widgetId);
              setResult(RESULT_OK, resultValue);
              rs.refreshWidget.put(widgetId, true);
              sp.edit().putString("refreshStatus", g.toJson(rs)).commit();
              finish();
        return true;
      }
    });
    
    cp.setOnPreferenceChangeListener(new OnPreferenceChangeListener() {
      public boolean onPreferenceChange(Preference preference, Object newValue) {
        ep.setEnabled((Boolean) newValue);
        return true;
      }
    });
    ep.setOnPreferenceChangeListener(new OnPreferenceChangeListener() {
      public boolean onPreferenceChange(Preference preference, Object newValue) {
        try {
          @SuppressWarnings("unused")
          URL u = new URL((String) newValue);
        } catch (MalformedURLException e) {
          new AlertDialog.Builder(HackspaceWidgetConfig.this)
            .setMessage("Your specified URL is not a valid!")
            .setNeutralButton("Try Again", new OnClickListener() {
              public void onClick(DialogInterface arg0, int arg1) {
                arg0.cancel();
              }
            }).create().show();
          return false;
        }
        
        AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(getBaseContext());
            new UpdateWidgetTask().execute(new TaskParameters(getBaseContext(), appWidgetManager, widgetId));
        
              Intent resultValue = new Intent();
              resultValue.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, widgetId);
              setResult(RESULT_OK, resultValue);
              rs.refreshWidget.put(widgetId, true);
              sp.edit().putString("refreshStatus", g.toJson(rs)).commit();
              finish();
        return true;
      }
    });
  }

  private class LoadLatestDirectory extends AsyncTask<String, Void, Map<String,String>> {
    protected Map<String,String> doInBackground(String... arg0) {
      HttpEntity body;
      String line, content = "";
      HttpClient http = new DefaultHttpClient();
      HttpGet get = new HttpGet(arg0[0]);
      
      get.setHeader("Accept", "application/json");
      get.setHeader("User-Agent", String.format("Android Widget/%s", VERSION));
      
      try {
        HttpResponse response = http.execute(get);
        if(response.getStatusLine().getStatusCode() == HttpStatus.SC_OK && (body = response.getEntity()) != null) {
          BufferedReader bir = new BufferedReader(new InputStreamReader(body.getContent()));
          while((line = bir.readLine()) != null) {
            content += line;
          }
          bir.close();

          Gson g = new Gson();
                    Map<String,String> keyValues = g.fromJson(content, jsonHashMap);
          return keyValues;
            
        }
      } catch (ClientProtocolException e) {
        e.printStackTrace();
      } catch (IOException e) {
        e.printStackTrace();
            }
      return null;
    }
    
    protected void onPostExecute(Map<String, String> result) {
      if(result != null) {
        lp.setSummary(R.string.predefined_hackspace_summary_done);
        lp.setEntries(result.keySet().toArray(new CharSequence[result.keySet().size()]));
        lp.setEntryValues(result.values().toArray(new CharSequence[result.keySet().size()]));
        lp.setEnabled(true);
      }
    }
    
  }
}

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