界面XML文件：preference_setting.xml

[java] view plaincopyprint?

<?xml?version="1.0"?encoding="UTF-8"?>??

<PreferenceScreen?xmlns:android="http://schemas.android.com/apk/res/android">??

????<PreferenceCategory?android:title="我的位置源">??

????????<CheckBoxPreference??

????????????android:key="my_wireless_network"??

????????????android:title="使用無線電"??

????????????android:summary="使用無線網絡查看應用程序（例如Google地圖）中的位置"??

????????/>??

????????<CheckBoxPreference??

????????????android:key="my_gps_satellite_setting"??

????????????android:title="啟用GPS衛星設置"??

????????????android:summary="定位時，精確到街道級別（取消選擇可節約電量）"??

????????/>??

????</PreferenceCategory>??

??????

????<PreferenceCategory?android:title="個人信息設置">??

????????<CheckBoxPreference??

????????????android:key="my_yesno_save_individual_info"??

????????????android:title="是否保存個人信息"??

????????/>??

????????<EditTextPreference??

????????????android:key="my_individual_name"??

????????????android:title="姓名"??

????????????android:summary="請輸入真實姓名"??

????????/>??

????????<PreferenceScreen???

????????????android:key="my_other_individual_msg"??

????????????android:title="其他個人信息"??

????????????android:summary="是否工作、手機">??

????????????<CheckBoxPreference??

????????????????android:key="my_is_an_employee"??

????????????????android:title="是否工作"??

????????????/>??

????????????<EditTextPreference??

????????????????android:key="my_mobile"??

????????????????android:title="手機"??

????????????????android:summary="請輸入您的手機號碼"??

????????????/>??

????????</PreferenceScreen>??

????</PreferenceCategory>??

</PreferenceScreen>??

<?xml version="1.0" encoding="UTF-8"?> <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"> <PreferenceCategory android:title="我的位置源"> <CheckBoxPreference android:key="my_wireless_network" android:title="使用無線電" android:summary="使用無線網絡查看應用程序（例如Google地圖）中的位置" /> <CheckBoxPreference android:key="my_gps_satellite_setting" android:title="啟用GPS衛星設置" android:summary="定位時，精確到街道級別（取消選擇可節約電量）" /> </PreferenceCategory> <PreferenceCategory android:title="個人信息設置"> <CheckBoxPreference android:key="my_yesno_save_individual_info" android:title="是否保存個人信息" /> <EditTextPreference android:key="my_individual_name" android:title="姓名" android:summary="請輸入真實姓名" /> <PreferenceScreen android:key="my_other_individual_msg" android:title="其他個人信息" android:summary="是否工作、手機"> <CheckBoxPreference android:key="my_is_an_employee" android:title="是否工作" /> <EditTextPreference android:key="my_mobile" android:title="手機" android:summary="請輸入您的手機號碼" /> </PreferenceScreen> </PreferenceCategory> </PreferenceScreen>

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PreferenceActivity 的類文件：

[java] view plaincopyprint?

package?com.icitylife.preference;??

??

import?android.content.SharedPreferences;??

import?android.os.Bundle;??

import?android.preference.Preference;??

import?android.preference.PreferenceActivity;??

import?android.preference.PreferenceScreen;??

import?android.preference.Preference.OnPreferenceChangeListener;??

??

public?class?Main?extends?PreferenceActivity?implements?OnPreferenceChangeListener?{??

????/**?Called?when?the?activity?is?first?created.?*/??

????@Override??

????public?void?onCreate(Bundle?savedInstanceState)?{??

????????super.onCreate(savedInstanceState);??

????????//設置PreferenceActivity保存數據使用的XML文件的名稱??

????????getPreferenceManager().setSharedPreferencesName("mySetting");??

????????//加載XML資源文件：此處就不能使用Activity的setContentView()??

????????addPreferencesFromResource(R.xml.preference_setting);??

????????//獲取【姓名】設置項對應的Preference對象??

????????Preference??individualNamePreference=findPreference("my_individual_name");??

????????//獲得指向mySetting.xml文件的SharedPreference對象??

????????SharedPreferences?sharedPreferences=individualNamePreference.getSharedPreferences();??

????????//設置【姓名】設置項的summary??

????????individualNamePreference.setSummary(sharedPreferences.getString("my_individual_name",""));??

????????//判斷【是否保存個人信息】設置項是否被選中??

????????if(sharedPreferences.getBoolean("my_yesno_save_individual_info",false)){??

????????????individualNamePreference.setEnabled(true);??

????????}else{??

????????????individualNamePreference.setEnabled(false);??

????????}??

????????individualNamePreference.setOnPreferenceChangeListener(this);??

????????//獲得【電話號碼】設置項對應的Preference對象??

????????Preference?mobileNamePreference=findPreference("my_mobile");??

????????SharedPreferences?mobileSharedPreferences=mobileNamePreference.getSharedPreferences();??

????????//設置【電話號碼】的summary??

????????mobileNamePreference.setSummary(mobileSharedPreferences.getString("my_mobile",""));??

????????mobileNamePreference.setOnPreferenceChangeListener(this);??

????}??

??

????@Override??

????public?boolean?onPreferenceChange(Preference?preference,?Object?newValue)?{??

????????preference.setSummary(String.valueOf(newValue));??

????????return?true;??

????}??

??????

????/**?

?????*?處理【是否保存個人信息】的改變事件?

?????*/??

????@Override??

????public?boolean?onPreferenceTreeClick(PreferenceScreen?preferenceScreen,??

????????????Preference?preference){??

????????if("my_yesno_save_individual_info".equals(preference.getKey())){??

????????????findPreference("my_individual_name").setEnabled(!findPreference("my_individual_name").isEnabled());??

????????}??

????????return?super.onPreferenceTreeClick(preferenceScreen,?preference);??

????}??

}??

總結

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