src/android/src/com/google/android/inputmethod/japanese/preference/MozcFragmentPreferenceActivity.java

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package org.mozc.android.inputmethod.japanese.preference;

import org.mozc.android.inputmethod.japanese.util.LauncherIconManagerFactory;

import android.content.SharedPreferences;
import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
import android.preference.PreferenceManager;

/**
 * Main Activity class for the fragment based preference UI on Android with API Level >= 11.
 *
 */
public class MozcFragmentPreferenceActivity extends MozcFragmentBasePreferenceActivity {

  public MozcFragmentPreferenceActivity() {
    super(PreferencePage.FLAT);
  }

  private final OnSharedPreferenceChangeListener sharedPreferenceChangeListener =
      new OnSharedPreferenceChangeListener() {
        @Override
        public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
          if (PreferenceUtil.PREF_LAUNCHER_ICON_VISIBILITY_KEY.equals(key)) {
            LauncherIconManagerFactory.getDefaultInstance()
                .updateLauncherIconVisibility(MozcFragmentPreferenceActivity.this);
          }
        }
      };

  @Override
  protected void onResume() {
    super.onResume();
    PreferenceManager
        .getDefaultSharedPreferences(this)
        .registerOnSharedPreferenceChangeListener(sharedPreferenceChangeListener);
  }

  @Override
  protected void onPause() {
    PreferenceManager
        .getDefaultSharedPreferences(this)
        .unregisterOnSharedPreferenceChangeListener(sharedPreferenceChangeListener);
    super.onPause();
  }
}