setting菜单界面的形成–未优化

代码：

first_preference.xml：

 <?xml version="1.0" encoding="utf-8"?>
 <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" >     <PreferenceCategory android:title="第一组" >
         <CheckBoxPreference
             android:defaultValue="true"
             android:icon="@drawable/ic_launcher"
             android:key="checkbox_key1"
             android:summary="true"
             android:title="CheckBoxPreference" />         <EditTextPreference
             android:defaultValue="小米"
             android:icon="@drawable/ic_launcher"
             android:key="edit_key1"
             android:summary="小米"
             android:title="EditTextPreference" />
     </PreferenceCategory>
     <PreferenceCategory android:title="第二组" >
         <ListPreference
             android:dialogIcon="@drawable/ic_launcher"
             android:entries="@array/citys"
             android:entryValues="@array/citys_code"
             android:icon="@drawable/ic_launcher"
             android:key="listPreferenc_key"
             android:summary="圆形的选择（单项选择）ListPreference"
             android:title="ListPreference" />         <!-- entries和entryValues对应关系 -->
         <MultiSelectListPreference
             android:dialogIcon="@drawable/ic_launcher"
             android:entries="@array/citys"
             android:entryValues="@array/citys_code"
             android:icon="@drawable/ic_launcher"
             android:key="multiSelectListPreference_key"
             android:summary="方形的选择（多项选择）MultiSelectListPreference"
             android:title="MultiSelectListPreference" />
     </PreferenceCategory>     <RingtonePreference
         android:icon="@drawable/ic_launcher"
         android:key="RingtonePreference_key1"
         android:summary="默认铃声"
         android:title="铃声设置" >
     </RingtonePreference>     <!-- 点击将浏览和打开网页 -->
     <Preference
         android:icon="@drawable/ic_launcher"
         android:summary="http://www.baidu.com"
         android:title="浏览网页" >
         <intent
             android:action="android.intent.action.VIEW"
             android:data="http://www.baidu.com" />
     </Preference>     <SwitchPreference
         android:defaultValue="false"
         android:icon="@drawable/ic_launcher"
         android:key="switchPreference_key1"
         android:summary="wifi开关"
         android:title="wifi" />     <!-- 此处将跳转到下一屏设置 -->
     <PreferenceScreen
         android:icon="@drawable/ic_launcher"
         android:key="preferenceScreen_key"
         android:persistent="false"
         android:title="其他设置" >
         <CheckBoxPreference
             android:defaultValue="false"
             android:key="checkbox_key2"
             android:summary="false"
             android:title="CheckBoxPreference" />         <EditTextPreference
             android:defaultValue="小米"
             android:key="edit_key2"
             android:summary="小米"
             android:title="EditTextPreference" />
     </PreferenceScreen> </PreferenceScreen>

arrays.xml：

 <?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string-array name="citys">
         <item>成都</item>
         <item>北京</item>
         <item>上海</item>
     </string-array>      <string-array name="citys_code">
         <item>028</item>
         <item>010</item>
         <item>021</item>
     </string-array>
 </resources>

MainActivity.java：

 package com.zzw.testpreferenceactivity; import android.content.SharedPreferences;
 import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
 import android.os.Bundle;
 import android.preference.CheckBoxPreference;
 import android.preference.EditTextPreference;
 import android.preference.ListPreference;
 import android.preference.MultiSelectListPreference;
 import android.preference.PreferenceActivity;
 import android.preference.PreferenceManager;
 import android.preference.SwitchPreference; public class MainActivity extends PreferenceActivity {     private final String CHECKBOXPREFERENCE_KEY1 = "checkbox_key1";
     private final String EDITTEXTPREFERENCE_KEY1 = "edit_key1";
     private final String LISTPREFERENCE_KEY = "listPreferenc_key";
     private final String MULTISELECTLISTPREFERENCE_KEY = "multiSelectListPreference_key";
     private final String SWITCHPREFERENCE_KEY = "switchPreference_key1";     private SharedPreferences mSharedPreferences;
     private OnSharedPreferenceChangeListener mOnSharedPreferenceChangeListener;     private CheckBoxPreference mCheckBoxPreference;
     private EditTextPreference mEditTextPreference;
     private ListPreference mListPreference;
     private MultiSelectListPreference mMultiSelectListPreference;
     private SwitchPreference mSwitchPreference;     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);         // 添加设置的选项
         addPreferencesFromResource(R.xml.first_preference);         mCheckBoxPreference = (CheckBoxPreference) findPreference(CHECKBOXPREFERENCE_KEY1);
         mEditTextPreference = (EditTextPreference) findPreference(EDITTEXTPREFERENCE_KEY1);
         mListPreference = (ListPreference) findPreference(LISTPREFERENCE_KEY);
         mMultiSelectListPreference = (MultiSelectListPreference) findPreference(MULTISELECTLISTPREFERENCE_KEY);
         mSwitchPreference = (SwitchPreference) findPreference(SWITCHPREFERENCE_KEY);         // 获取SharedPreferences对象
         mSharedPreferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());         // 通用的读取设置的某个值的方法
         // boolean b = mSharedPreferences.getBoolean("checkbox_key1", false);
         // Log.d("checkbox_key1", b+"");
         //
         // String s = mSharedPreferences.getString("edit_key1", "暂时为空");
         // Log.d("edit_key1", s);         mOnSharedPreferenceChangeListener = new MyOnSharedPreferenceChangeListener();
     }     // 数据发生变化时候的监听类设置
     private class MyOnSharedPreferenceChangeListener implements OnSharedPreferenceChangeListener {         @Override
         public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {             if (CHECKBOXPREFERENCE_KEY1.equals(key)) {                 boolean b = sharedPreferences.getBoolean(CHECKBOXPREFERENCE_KEY1, false);
                 mCheckBoxPreference.setSummary(b + "");
                 // Toast.makeText(getApplicationContext(), "checkBox变化了,当前值--" +
                 // b, 0).show();             } else if (EDITTEXTPREFERENCE_KEY1.equals(key)) {                 String s = sharedPreferences.getString(EDITTEXTPREFERENCE_KEY1, "null");
                 mEditTextPreference.setSummary(s);
                 // Toast.makeText(getApplicationContext(), "editText变化了，当前值--" +
                 // s, 0).show();             } else if (LISTPREFERENCE_KEY.equals(key)) {                 String e = mListPreference.getEntry() + "";
                 String v = mListPreference.getValue();
                 mListPreference.setSummary(e + " : " + v);             } else if (MULTISELECTLISTPREFERENCE_KEY.equals(key)) {
                 // String s_entries="entries:";
                 //
                 // CharSequence
                 // []entries=mMultiSelectListPreference.getEntries();
                 // for(CharSequence c:entries){
                 // s_entries+=c+""+"\t";
                 // }
                 //
                 // Set<String> values=mMultiSelectListPreference.getValues();
                 // Iterator<String> it=values.iterator();
                 // String s_values="values:";
                 // while(it.hasNext()){
                 // s_values+=it.next().toString()+"\t";
                 // }
                 // mMultiSelectListPreference.setSummary(s_entries+"\n"+s_values);             } else if (SWITCHPREFERENCE_KEY.equals(key)) {                 boolean b = sharedPreferences.getBoolean(SWITCHPREFERENCE_KEY, false);
                 mSwitchPreference.setSummary(b + "");
             }
         }
     }     @Override
     protected void onResume() {
         super.onResume();
         // 注册数据发生变化时候的监听
         mSharedPreferences.registerOnSharedPreferenceChangeListener(mOnSharedPreferenceChangeListener);
         // getPreferenceScreen().getSharedPreferences()
         // .registerOnSharedPreferenceChangeListener(mOnSharedPreferenceChangeListener);
     }     @Override
     protected void onPause() {
         super.onPause();
         // 取消数据发生变化时候的监听
         mSharedPreferences.unregisterOnSharedPreferenceChangeListener(mOnSharedPreferenceChangeListener);
         // getPreferenceScreen().getSharedPreferences()
         // .unregisterOnSharedPreferenceChangeListener(mOnSharedPreferenceChangeListener);
     } }