DocumentModePreference.java 文件源码

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    addPreferencesFromResource(R.xml.document_mode_preferences);
    getActivity().setTitle(R.string.tabs_and_apps_title);

    mDocumentModeManager = DocumentModeManager.getInstance(getActivity());

    mDocumentModeSwitch = (SwitchPreference) findPreference(PREF_DOCUMENT_MODE_SWITCH);

    boolean isdocumentModeEnabled = !mDocumentModeManager.isOptedOutOfDocumentMode();
    mDocumentModeSwitch.setChecked(isdocumentModeEnabled);

    mDocumentModeSwitch.setOnPreferenceChangeListener(new OnPreferenceChangeListener() {
        @Override
        public boolean onPreferenceChange(Preference preference, Object newValue) {
            if ((boolean) newValue == !mDocumentModeManager.isOptedOutOfDocumentMode()) {
                return true;
            }
            createOptOutAlertDialog((boolean) newValue).show();
            return true;
        }
    });
}