ConfigurationFragment.java 文件源码

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

    // Load the preferences from an XML resource
    addPreferencesFromResource(R.xml.preferences);

    // click on clear button
    Preference clear = findPreference("clear_card");
    clear.setOnPreferenceClickListener(new OnPreferenceClickListener() {

        @Override
        public boolean onPreferenceClick(final Preference preference) {
            HomeActivity activity = (HomeActivity) getActivity();
            if (activity != null) {
                activity.clear();
                CroutonUtils.display(activity, getString(R.string.card_deleted), CoutonColor.GREEN);
                activity.backToHomeScreen();
            }
            return true;
        }
    });

}