Android Open Source - Passman Settings Activity

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License

The source code is released under:

GNU General Public License

Java Source Code

package com.kytse.passman;
//from   w  ww  . j  av  a2 s.c  o  m
import android.content.Context;
import android.content.Intent;
import android.content.res.Configuration;
import android.os.Build;
import android.os.Bundle;
import android.preference.ListPreference;
import android.preference.Preference;
import android.preference.Preference.OnPreferenceClickListener;
import android.preference.PreferenceActivity;
import android.preference.PreferenceFragment;
import android.preference.PreferenceManager;
import android.widget.Toast;

import com.dropbox.sync.android.DbxDatastore;
import com.dropbox.sync.android.DbxException;
import com.kytse.passman.utiil.AccountTable;
import com.kytse.passman.utiil.DbxTool;

/**
 * A {@link PreferenceActivity} that presents a set of application settings. On
 * handset devices, settings are presented as a single list. On tablets,
 * settings are split by category, with category headers shown to the left of
 * the list of settings.
 * <p>
 * See <a href="http://developer.android.com/design/patterns/settings.html">
 * Android Design: Settings</a> for design guidelines and the <a
 * href="http://developer.android.com/guide/topics/ui/settings.html">Settings
 * API Guide</a> for more information on developing a Settings UI.
 */
public class SettingsActivity extends PreferenceActivity {
  /**
   * Determines whether to always show the simplified settings UI, where
   * settings are presented in a single list. When false, settings are shown
   * as a master/detail two-pane view on tablets. When true, a single pane is
   * shown on tablets.
   */
  private static final boolean ALWAYS_SIMPLE_PREFS = true;

  @Override
  protected void onPostCreate(Bundle savedInstanceState) {
    super.onPostCreate(savedInstanceState);

    setupSimplePreferencesScreen();
  }

  /**
   * Shows the simplified settings UI if the device configuration if the
   * device configuration dictates that a simplified, single-pane UI should be
   * shown.
   */
  private void setupSimplePreferencesScreen() {
    if (!isSimplePreferences(this)) {
      return;
    }

    // In the simplified UI, fragments are not used at all and we instead
    // use the older PreferenceActivity APIs.
    
    // Add 'general' preferences.
    addPreferencesFromResource(R.xml.pref_general);
  }

  /**
   * Helper method to determine if the device has an extra-large screen. For
   * example, 10" tablets are extra-large.
   */
  private static boolean isXLargeTablet(Context context) {
    return (context.getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) >= Configuration.SCREENLAYOUT_SIZE_XLARGE;
  }

  /**
   * Determines whether the simplified settings UI should be shown. This is
   * true if this is forced via {@link #ALWAYS_SIMPLE_PREFS}, or the device
   * doesn't have newer APIs like {@link PreferenceFragment}, or the device
   * doesn't have an extra-large screen. In these cases, a single-pane
   * "simplified" settings UI should be shown.
   */
  private static boolean isSimplePreferences(Context context) {
    return ALWAYS_SIMPLE_PREFS
        || Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB
        || !isXLargeTablet(context);
  }

  /**
   * A preference value change listener that updates the preference's summary
   * to reflect its new value.
   */
  private static Preference.OnPreferenceChangeListener sBindPreferenceSummaryToValueListener = new Preference.OnPreferenceChangeListener() {
    @Override
    public boolean onPreferenceChange(Preference preference, Object value) {
      String stringValue = value.toString();

      if (preference instanceof ListPreference) {
        // For list preferences, look up the correct display value in
        // the preference's 'entries' list.
        ListPreference listPreference = (ListPreference) preference;
        int index = listPreference.findIndexOfValue(stringValue);

        // Set the summary to reflect the new value.
        preference
            .setSummary(index >= 0 ? listPreference.getEntries()[index]
                : null);

      } else {
        // For all other preferences, set the summary to the value's
        // simple string representation.
        preference.setSummary(stringValue);
      }
      return true;
    }
  };

  /**
   * Binds a preference's summary to its value. More specifically, when the
   * preference's value is changed, its summary (line of text below the
   * preference title) is updated to reflect the value. The summary is also
   * immediately updated upon calling this method. The exact display format is
   * dependent on the type of preference.
   * 
   * @see #sBindPreferenceSummaryToValueListener
   */
  private static void bindPreferenceSummaryToValue(Preference preference) {
    // Set the listener to watch for value changes.
    preference
        .setOnPreferenceChangeListener(sBindPreferenceSummaryToValueListener);

    // Trigger the listener immediately with the preference's
    // current value.
    sBindPreferenceSummaryToValueListener.onPreferenceChange(
        preference,
        PreferenceManager.getDefaultSharedPreferences(
            preference.getContext()).getString(preference.getKey(),
            ""));
  }
  
    @Override
  protected void onPause() {
    // TODO Auto-generated method stub
    super.onPause();
        if (DbxTool.mDatastore != null) {
          DbxTool.mDatastore.close();
          DbxTool.mDatastore = null;
        }
  }
    
  @Override
  protected void onResume() {
    super.onResume();

        if (null == DbxTool.mDatastore) {
          try {
        DbxTool.mDatastore = DbxDatastore.openDefault(DbxTool.mDbxAcctMgr.getLinkedAccount());
      } catch (DbxException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
      }
        }
        DbxTool.mAccountTable = new AccountTable(DbxTool.mDatastore);
        
  }

  @Override
  protected void onPostResume() {
    super.onPostResume();
    findPreference("dropbox_account").setSummary(DbxTool.mDbxAcctMgr.getLinkedAccount().getAccountInfo().displayName);
    findPreference("logout").setOnPreferenceClickListener(new OnPreferenceClickListener() {

      @Override
      public boolean onPreferenceClick(Preference arg0) {
          DbxTool.mDbxAcctMgr.unlink();
            Toast.makeText(getApplicationContext(), "unlinked to dropbox", Toast.LENGTH_LONG).show();
            Intent intent = new Intent(SettingsActivity.this, LoginActivity.class);
            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
            startActivity(intent);
        return true;
      }
      
    });
  }

}

Java Source Code List

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