android.preference.CheckBoxPreference#setPersistent ( )源码实例Demo

static CheckBoxPreference addPreference(PreferenceFragment fragment) {
//>5.1// static SwitchPreference addPreference(PreferenceFragment fragment) {
    PreferenceGroup pg = (PreferenceGroup) fragment.findPreference(PREFERENCE_CATEGORY_KEY);
    if (pg != null) {
        /*<5.1*/ CheckBoxPreference p = new CheckBoxPreference(pg.getContext());
        //>5.1// SwitchPreference p = new SwitchPreference(pg.getContext());
        p.setKey(PREFERENCE_KEY);
        p.setTitle(PREFERENCE_TITLE);
        p.setSummary(PREFERENCE_SUMMARY);
        p.setPersistent(false);
        pg.addPreference(p);
        return p;
    } else {
        Log.e("FakeSignatureGlobalUI", "cannot find '" + PREFERENCE_CATEGORY_KEY +"' preference category");
        return null;
    }
}
 

static CheckBoxPreference addPreference(PreferenceFragment fragment) {
//>5.1// static SwitchPreference addPreference(PreferenceFragment fragment) {
    PreferenceGroup pg = (PreferenceGroup) fragment.findPreference(PREFERENCE_CATEGORY_KEY);
    if (pg != null) {
        /*<5.1*/ CheckBoxPreference p = new CheckBoxPreference(pg.getContext());
        //>5.1// SwitchPreference p = new SwitchPreference(pg.getContext());
        p.setKey(PREFERENCE_KEY);
        p.setTitle(PREFERENCE_TITLE);
        p.setSummary(PREFERENCE_SUMMARY);
        p.setPersistent(false);
        pg.addPreference(p);
        return p;
    } else {
        Log.e("FakeSignatureGlobalUI", "cannot find '" + PREFERENCE_CATEGORY_KEY +"' preference category");
        return null;
    }
}
 

static CheckBoxPreference addPreference(PreferenceFragment fragment) {
//>5.1// static SwitchPreference addPreference(PreferenceFragment fragment) {
    PreferenceGroup pg = (PreferenceGroup) fragment.findPreference(PREFERENCE_CATEGORY_KEY);
    if (pg != null) {
        /*<5.1*/ CheckBoxPreference p = new CheckBoxPreference(pg.getContext());
        //>5.1// SwitchPreference p = new SwitchPreference(pg.getContext());
        p.setKey(PREFERENCE_KEY);
        p.setTitle(PREFERENCE_TITLE);
        p.setSummary(PREFERENCE_SUMMARY);
        p.setPersistent(false);
        pg.addPreference(p);
        return p;
    } else {
        Log.e("FakeSignatureGlobalUI", "cannot find '" + PREFERENCE_CATEGORY_KEY +"' preference category");
        return null;
    }
}
 

public CheckBoxPreference makeCheckBox(PreferenceGroup parent, boolean persistent, String key,
		boolean defaultValue, CharSequence title, CharSequence summary) {
	CheckBoxPreference preference = new CheckBoxPreference(getActivity());
	preference.setPersistent(persistent);
	preference.setKey(key);
	preference.setTitle(title);
	if (summary != null) {
		preference.setSummary(summary);
	}
	preference.setDefaultValue(defaultValue);
	addPreference(parent, preference);
	return preference;
}
 

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

        // Load the preferences from an XML resource
        addPreferencesFromResource(R.xml.group_preferences);
        PreferenceScreen screen = this.getPreferenceScreen();

        prefStreams = (ListPreference) findPreference("pref_stream");

        Bundle bundle = getArguments();
        try {
            group = new Group(new JSONObject(bundle.getString("group")));
            serverStatus = new ServerStatus(new JSONObject(bundle.getString("serverStatus")));
        } catch (JSONException e) {
            e.printStackTrace();
        }

        final ArrayList<Stream> streams = serverStatus.getStreams();
        final CharSequence[] streamNames = new CharSequence[streams.size()];
        final CharSequence[] streamIds = new CharSequence[streams.size()];
        for (int i = 0; i < streams.size(); ++i) {
            streamNames[i] = streams.get(i).getName();
            streamIds[i] = streams.get(i).getId();
        }

        prefStreams.setEntries(streamNames);
        prefStreams.setEntryValues(streamIds);

        for (int i = 0; i < streams.size(); ++i) {
            if (streamIds[i].equals(group.getStreamId())) {
                prefStreams.setTitle(streamNames[i]);
                prefStreams.setValueIndex(i);
                oldStream = prefStreams.getValue();
                break;
            }
        }

        prefStreams.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
            @Override
            public boolean onPreferenceChange(Preference preference, Object newValue) {
                for (int i = 0; i < streams.size(); ++i) {
                    if (streamIds[i].equals(newValue)) {
                        prefStreams.setTitle(streamNames[i]);
//                        client.getConfig().setStream(streamIds[i].toString());
                        prefStreams.setValueIndex(i);
                        break;
                    }
                }

                return false;
            }
        });


        prefCatClients = (PreferenceCategory) findPreference("pref_cat_clients");
        ArrayList<CheckBoxPreference> allClients = new ArrayList<>();
        for (Group g : serverStatus.getGroups()) {
            for (Client client : g.getClients()) {
                CheckBoxPreference checkBoxPref = new CheckBoxPreference(screen.getContext());
                checkBoxPref.setKey(client.getId());
                checkBoxPref.setTitle(client.getVisibleName());
                checkBoxPref.setChecked(g.getId().equals(group.getId()));
                checkBoxPref.setPersistent(false);
                allClients.add(checkBoxPref);
            }
        }
        Collections.sort(allClients, new Comparator<CheckBoxPreference>() {
            @Override
            public int compare(CheckBoxPreference lhs, CheckBoxPreference rhs) {
                return lhs.getTitle().toString().compareToIgnoreCase(rhs.getTitle().toString());
            }
        });
        for (CheckBoxPreference pref : allClients)
            prefCatClients.addPreference(pref);

        oldClients = getClients().toString();
    }