Android Open Source - WAIDProfiler Profiles Fragment

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License

The source code is released under:

GNU General Public License

Java Source Code

/**
 * //ww w.  j a va2 s.c  o m
 */
package it.unibo.cs.jonus.waidprof;

import java.util.HashSet;
import java.util.Map;
import java.util.Set;

import android.content.SharedPreferences;
import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.preference.CheckBoxPreference;
import android.preference.EditTextPreference;
import android.preference.MultiSelectListPreference;
import android.preference.PreferenceCategory;
import android.preference.PreferenceFragment;
import android.preference.PreferenceManager;
import android.preference.PreferenceScreen;
import android.util.Log;
import android.widget.Toast;

/**
 * @author jei
 * 
 */
public class ProfilesFragment extends PreferenceFragment implements
    OnSharedPreferenceChangeListener {

  public static final String KEY_CATEGORY_PROFILES = "category_profiles";
  public static final String KEY_PREF_HISTORY_LENGTH = "pref_history_length";
  public static final String KEY_PREF_RESTORE_STATE = "pref_restore_state";
  public static final String KEY_TRANSITIONS_SCREEN = "transitions_screen";
  public static final String PREFIX_PROFILE = "profile_";
  public static final String SUFFIX_TRANSITIONS = "_transitions";
  public static final String SUFFIX_PREF_WIFI = "_pref_wifi";
  public static final String SUFFIX_PREF_BLUETOOTH = "_pref_bluetooth";
  public static final String SUFFIX_PREF_SPEAKERPHONE = "_pref_speakerphone";
  public static final String SUFFIX_PREF_ENABLED = "_pref_enabled";
  private static final int MAX_HISTORY_LENGTH = 50;
  private static final int MIN_HISTORY_LENGTH = 1;

  public ProfilesFragment() {

  }

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // Load the application preferences
    addPreferencesFromResource(R.xml.waidprof_profiles);
  }

  @Override
  public void onResume() {
    super.onResume();

    // Recreate profiles screens
    PreferenceManager prefManager = getPreferenceManager();
    SharedPreferences prefs = prefManager.getSharedPreferences();
    PreferenceCategory profilesCategory = (PreferenceCategory) findPreference(KEY_CATEGORY_PROFILES);
    profilesCategory.removeAll();
    PreferenceScreen transitionsScreen = (PreferenceScreen) findPreference(KEY_TRANSITIONS_SCREEN);
    transitionsScreen.removeAll();

    // Get a set of vehicles and vehicle names
    Set<Map.Entry<String, Bitmap>> vehicleSet = ProfilerActivity.sVehiclesMap
        .entrySet();
    Set<String> vehicleNames = new HashSet<String>();
    for (Map.Entry<String, Bitmap> entry : vehicleSet) {
      vehicleNames.add(entry.getKey());
    }
    // Get the screens and transitions for all the vehicles
    for (Map.Entry<String, Bitmap> entry : vehicleSet) {
      String vehicle = entry.getKey();
      String profileKey = PREFIX_PROFILE + vehicle;
      PreferenceScreen prefScreen = prefManager
          .createPreferenceScreen(getActivity());
      prefScreen.setKey(profileKey);
      prefScreen.setTitle(vehicle);

      boolean enabled = prefs.getBoolean(vehicle + SUFFIX_PREF_ENABLED,
          false);
      boolean wifi = prefs.getBoolean(vehicle + SUFFIX_PREF_WIFI, false);
      boolean bluetooth = prefs.getBoolean(vehicle
          + SUFFIX_PREF_BLUETOOTH, false);
      boolean speaker = prefs.getBoolean(vehicle
          + SUFFIX_PREF_SPEAKERPHONE, false);
      Set<String> transitions = prefs.getStringSet(vehicle + SUFFIX_TRANSITIONS, new HashSet<String>());

      CheckBoxPreference enabledPref = new CheckBoxPreference(
          getActivity());
      CheckBoxPreference bluetoothPref = new CheckBoxPreference(
          getActivity());
      CheckBoxPreference speakerPref = new CheckBoxPreference(
          getActivity());
      CheckBoxPreference wifiPref = new CheckBoxPreference(getActivity());
      // Enabled preference
      enabledPref = new CheckBoxPreference(getActivity());
      enabledPref.setKey(vehicle + SUFFIX_PREF_ENABLED);
      enabledPref.setChecked(enabled);
      enabledPref.setTitle(R.string.pref_enabled);
      // Bluetooth preference
      bluetoothPref = new CheckBoxPreference(getActivity());
      bluetoothPref.setKey(vehicle + SUFFIX_PREF_BLUETOOTH);
      bluetoothPref.setChecked(bluetooth);
      bluetoothPref.setTitle(R.string.pref_bluetooth);
      // Speakerphone preference
      speakerPref = new CheckBoxPreference(getActivity());
      speakerPref.setKey(vehicle + SUFFIX_PREF_SPEAKERPHONE);
      speakerPref.setChecked(speaker);
      speakerPref.setTitle(R.string.pref_speakerphone);
      // Wifi preference
      wifiPref = new CheckBoxPreference(getActivity());
      wifiPref.setKey(vehicle + SUFFIX_PREF_WIFI);
      wifiPref.setChecked(wifi);
      wifiPref.setTitle(R.string.pref_wifi);

      // Add the preferences to the screen
      prefScreen.addPreference(enabledPref);
      prefScreen.addPreference(wifiPref);
      prefScreen.addPreference(bluetoothPref);
      prefScreen.addPreference(speakerPref);

      // Add the screen to the category
      profilesCategory.addPreference(prefScreen);
      wifiPref.setDependency(vehicle + SUFFIX_PREF_ENABLED);
      bluetoothPref.setDependency(vehicle + SUFFIX_PREF_ENABLED);
      speakerPref.setDependency(vehicle + SUFFIX_PREF_ENABLED);

      // Get transitions
      MultiSelectListPreference selectedVehicles = new MultiSelectListPreference(
          getActivity());
      selectedVehicles.setTitle(vehicle);
      selectedVehicles.setKey(vehicle + SUFFIX_TRANSITIONS);

      // Get the array of selectable vehicles
      Set<String> selectableVehicles = new HashSet<String>(vehicleNames);
      selectableVehicles.remove(vehicle);
      
      // Modify the existent values if needed
      Set<String> newTransitions = new HashSet<String>(transitions);
      newTransitions.retainAll(selectableVehicles);
      
      // Set entries and selected values
      String[] selectablesArray = selectableVehicles.toArray(new String[0]);
      selectedVehicles.setEntries(selectablesArray);
      selectedVehicles.setEntryValues(selectablesArray);
      selectedVehicles.setValues(newTransitions);
      // TODO add description
      
      // Add the transitions to the preference screen
      transitionsScreen.addPreference(selectedVehicles);
    }

    getPreferenceManager().getSharedPreferences()
        .registerOnSharedPreferenceChangeListener(this);
  }

  @Override
  public void onPause() {
    getPreferenceManager().getSharedPreferences()
        .unregisterOnSharedPreferenceChangeListener(this);
    super.onPause();
  }

  @Override
  public void onSharedPreferenceChanged(SharedPreferences sharedPreferences,
      String key) {

    // Validate the input for history length
    if (key.equals(KEY_PREF_HISTORY_LENGTH)) {
      // Get the changed preference
      EditTextPreference preference = (EditTextPreference) findPreference(key);
      String input = sharedPreferences.getString(key, "10");
      int value = Integer.parseInt(input);
      // Check if the input is too high or low
      if (value > MAX_HISTORY_LENGTH) {
        preference.setText("" + MAX_HISTORY_LENGTH);
        Toast.makeText(
            getActivity(),
            "" + getText(R.string.history_length_max_amount)
                + MAX_HISTORY_LENGTH, Toast.LENGTH_SHORT)
            .show();
      } else if (value < MIN_HISTORY_LENGTH) {
        preference.setText("" + MIN_HISTORY_LENGTH);
        Toast.makeText(
            getActivity(),
            "" + getText(R.string.history_length_min_amount)
                + MIN_HISTORY_LENGTH, Toast.LENGTH_SHORT)
            .show();
      }
    }

  }
}

Java Source Code List

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