关于PreferenceActivity的使用和一些问题的解决(自己定义Title和取值)

android的Setting往往用PreferenceActivity来写的

我们在建立layout文件:

<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
<PreferenceCategory android:title="常规设置" android:key="set_local">
<CheckBoxPreference
android:key="new_message_notify"
android:title="新消息通知"
android:defaultValue="true"
android:summary="收到新消息时是否须要通知" /> <RingtonePreference
android:layout="?android:attr/preferenceLayoutChild"
android:dependency="new_message_notify"
android:key="account_ringtone"
android:title="铃声"
android:ringtoneType="notification"
android:defaultValue="content://settings/system/notification_sound" /> <CheckBoxPreference
android:layout="?android:attr/preferenceLayoutChild"
android:dependency="new_message_notify"
android:key="account_vibrate"
android:defaultValue="false"
android:title="振动"/>
</PreferenceCategory>
<PreferenceCategory android:title="个人设置" android:key="personal_local">
<Preference android:key="clear_cache"
android:summary="点击将清理应用程序的缓存" android:title="清除缓存" defaultValue="false">
</Preference>
<CheckBoxPreference android:key="save_setting"
android:summary="下次开启记住个人设置" android:title="保存个人设置" android:defaultValue="true">
</CheckBoxPreference><EditTextPreference
android:key="edit_text"
android:title="Edit" android:summary="EditTextPreference"
></EditTextPreference><SwitchPreference
android:key="switch" android:summary="SwitchPreference"
></SwitchPreference><ListPreference
android:key="list" android:summary="ListPreference" android:entries="@array/entry" android:entryValues="@array/entry_value" android:title="ListTitle"
></ListPreference><MultiSelectListPreference
android:summary="MultiSelectListPreference" android:key="mutiSelect" android:entries="@array/entry" android:entryValues="@array/entry_value" android:title="mutiTitle"
/>
</PreferenceCategory>
</PreferenceScreen>

类的代码例如以下:

public class Settings extends PreferenceActivity {@Override
protected void onCreate(Bundle savedInstanceState) {
//这个是给Settings加自己定义Title
final boolean isCustom = requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
super.onCreate(savedInstanceState);
if(isCustom){
getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.title_list);
}
TextView title_text = (TextView)findViewById(R.id.title_text);
title_text.setText("Settings");
Button back = (Button)findViewById(R.id.back);
back.setVisibility(View.VISIBLE);
back.setOnClickListener(new View.OnClickListener() {@Override
public void onClick(View v) {
finish();}
});addPreferencesFromResource(R.xml.seting_preferences);}}

定义themes,把这个activity的theme设置成下面的样子

<style name="AppTheme" parent="AppBaseTheme"> <!-- All customizations that are NOT specific to a particular API-level can go here. -->
<!-- 避免反复设置标题 -->
<item name="android:windowActionBar">false</item>
<!-- 设置标题栏宽度 -->
<item name="android:windowTitleSize">60dp</item> //titlebar的高度
<!-- <item name="android:windowTitleBackgroundStyle">@style/CustomWindowTitleBackground</item> -->
</style>

取值的时候能够这样做:

SharedPreferences shp = PreferenceManager.getDefaultSharedPreferences(this);
String s = shp.getString("list", null); //这个是取ListPreference
TextView listData = (TextView)findViewById(R.id.listData);
listData.setText(s);HashSet set = (HashSet) shp.getStringSet("mutiSelect", null); //这个是取MultiSelectListPreference的值
Iterator<String> it = set.iterator();
String content = "";
while(it.hasNext()) {
content += it.next()+",";
}
TextView muti_select_data = (TextView)findViewById(R.id.muti_select_data);
muti_select_data.setText(content);

截图是: