Android Open Source - GTHive Prefs

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License

The source code is released under:

MIT License

Java Source Code

package com.craigsc.gthive;
//ww w.ja  va  2 s.  co m

import android.app.AlertDialog;
import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.Preference;
import android.preference.PreferenceActivity;
import android.preference.PreferenceManager;
import android.preference.Preference.OnPreferenceClickListener;

/**
 * Handles all preferences/settings for GTHive.
 * @author Craig Campbell
 *
 */
public class Prefs extends PreferenceActivity {
  public static final int DIALOG_CLEARDATA = 0;
  
  /**
   * Simply expand and display the layout defined in
   * settings.xml when the activity is created.
   */
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    addPreferencesFromResource(R.xml.settings);
    Preference clear = findPreference("clear_data");
    //hook up dialog box to the clear_data button
    clear.setOnPreferenceClickListener(new OnPreferenceClickListener() {
      public boolean onPreferenceClick(Preference pref) {
        showDialog(DIALOG_CLEARDATA);
        return true;
      }
    });
  }
  
  /**
   * Standard onCreateDialog method as defined by Android. The only dialog
   * defined at the moment is the clear data dialog which is displayed when
   * the user clicks the clear all saved data button.
   */
  protected Dialog onCreateDialog(int id) {
    Dialog dialog = null;
    switch (id) {
    case DIALOG_CLEARDATA:
      AlertDialog.Builder builder = new AlertDialog.Builder(this);
      //setup dialog and callbacks
      builder.setMessage("All saved login information will be deleted.")
        .setCancelable(false)
          .setPositiveButton("OK", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int id) {
              dialog.dismiss();
              findPreference("clear_data").setEnabled(false);
                  deleteLoginData();
                  setResult(333);
              }
          })
          .setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int id) {
              dialog.dismiss();
              }
          });
      dialog = builder.create();
      break;
    }
    return dialog;
  }
  
  /**
   * Removes all values saved to preferences.
   */
  private void deleteLoginData() {
    SharedPreferences settings = getSharedPreferences(GTHive.PREFS_NAME, 0);
    settings.edit().clear().commit();
  }
  
  /**
   * Returns true if preferences are set to remember logins, false otherwise.
   * @param c the Context of the Activity
   * @return boolean true if GTHive should remember logins, false otherwise
   */
  public static boolean getRememberLogin(Context c) {
    return PreferenceManager.getDefaultSharedPreferences(c)
        .getBoolean("remember_login", true);
  }
  
  /**
   * Returns true if preferences are set to auto signin whenever wifi
   * is connected to GTWireless, false otherwise.
   * @param c Context of the activity
   * @return boolean true if GTHive should auto signin, false otherwise
   */
  public static boolean getAutoSignin(Context c) {
    return PreferenceManager.getDefaultSharedPreferences(c)
        .getBoolean("auto_signin", true);
  }
  
  /**
   * Determines if preferences denote that wifi should be automatically 
   * enabled when needed.
   * @param c the Context of the activity
   * @return boolean, true if wifi should be auto-enabled, false otherwise
   */
  public static boolean getAutoWifi(Context c) {
    return PreferenceManager.getDefaultSharedPreferences(c)
        .getBoolean("wifi", false);
  }
  
  /**
   * Determines if preferences denote that ISS should be enabled or disabled.
   * @param c the Context of the Activity
   * @return boolean, true if ISS should be enables, false otherwise.
   */
  public static boolean getISS(Context c) {
    return PreferenceManager.getDefaultSharedPreferences(c)
        .getBoolean("iss", true);
  }

  /**
   * Determines if preferences denote that messages should be shown when the
   * user is auto signed in.
   * @param c the Context of the Activity
   * @return boolean, true if toast messages should be displayed with status info
   * on an attempted auto signin
   */
  public static boolean showAutoSigninMessages(Context c) {
    return PreferenceManager.getDefaultSharedPreferences(c)
        .getBoolean("auto_signin_messages", false);
  }
  
  /**
   * Called when Preference activity finishes. This method checks whether the
   * user has set the remember_login preference to false and deletes all saved
   * login information if they have. 
   */
  @Override
  public void onStop() {
    SharedPreferences settings = getPreferenceManager().getSharedPreferences();
    if (!settings.getBoolean("remember_login", true)) {
      deleteLoginData();
    }
    super.onStop();
  }
}

Java Source Code List

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