SettingsActivity.java 文件源码

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    addPreferencesFromResource(R.xml.settings);
    CheckBoxPreference cb_speed = (CheckBoxPreference) findPreference("PREF_REG_SPEED");
    cb_sync = (CheckBoxPreference) findPreference("PREF_REG_SYNC");

    cb_speed.setOnPreferenceChangeListener(new OnPreferenceChangeListener() {

        @Override
        public boolean onPreferenceChange(Preference preference, Object newValue) {
            if (!((Boolean) newValue).booleanValue()) {
                cb_sync.setChecked(false);
            }
            return true;
        }
    });
}