一個(gè)簡(jiǎn)單示例:點(diǎn)擊彈出選項(xiàng)
- 在res目錄下新建xml目錄君纫,在其中創(chuàng)建xml文件,應(yīng)以
<PreferenceScreen>
為根標(biāo)簽芹彬,在其中放入需要的其他標(biāo)簽:<?xml version="1.0" encoding="utf-8"?> <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"> <ListPreference android:title="@string/pref_title" android:key="@string/pref_key" android:entries="@array/pref_entries" android:entryValues="@array/pref_values" android:defaultValue="@string/pref_default" android:summary="@string/pref_summary"/>
</PreferenceScreen>
```
- key值相當(dāng)于此ListPreference標(biāo)簽的id
- entries為選項(xiàng)條目蓄髓,在string.xml中建立``<string-array>``標(biāo)簽:
```xml
<string-array name="pref_entries">
<item>選項(xiàng)1</item>
<item>選項(xiàng)2</item>
</string-array>
```
- entryValues為條目對(duì)應(yīng)的值,同樣在string.xml中:
```xml
<string-array name="pref_values">
<item>1</item>
<item>2</item>
</string-array>
```
- defaultValues為默認(rèn)選項(xiàng)舒帮,填入values中的一個(gè)值即可会喝,如“1”陡叠。
- summary為描述信息
-
創(chuàng)建SettingsFragment類繼承PreferenceFragment,加載xml文件肢执,實(shí)現(xiàn)OnPreferenceChangeListener接口(可選):
public class SettingFragment extends PreferenceFragment implements Preference.OnPreferenceChangeListener{ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); addPreferencesFromResource(R.xml.pref_general); //加載xml } @Override public boolean onPreferenceChange(Preference preference, Object newValue) { String stringValue = newValue.toString(); if(preference instanceof ListPreference) { ListPreference listPreference = (ListPreference) preference; int index = listPreference.findIndexOfValue(stringValue); if(index >= 0) { preference.setSummary(listPreference.getEntries()[index]); } } else { preference.setSummary(stringValue); } return true; } }
-
在SettingActivity中的onCreate方法中添加Fragment:
@Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); getFragmentManager().beginTransaction().add(android.R.id.content, new SettingFragment()).commit(); }
-
根據(jù)ListPreference的key值獲取設(shè)置的選項(xiàng)枉阵,做出響應(yīng):
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getActivity()); String select = prefs.getString(getString(R.string.pref_key), getString(R.string.pref_default)); if ("1".equals(select)) { //TODO } else if ("2".equals(select)) { //TODO }