Android How to change the title and summary CheckBoxPreferencecomponent font size

First , preference.xml

 <?xml version="1.0" encoding="utf-8"?>
 <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" >
 
     <PreferenceCategory android:title="CheckBoxPreference" >
         <CheckBoxPreference
             android:key="checkbox_0"
             android:summary="这是一个勾选框A"
             android:title="CheckBox_A" >
         </CheckBoxPreference>
     </PreferenceCategory>
 
 </PreferenceScreen>
 

Second , MainActivity.java

 package com.bo.preferencedemo;
 import android.content.Context;
 import android.os.Bundle;
 import android.preference.CheckBoxPreference;
 import android.preference.Preference;
 import android.preference.PreferenceActivity;
 import android.preference.Preference.OnPreferenceChangeListener;
 import android.preference.Preference.OnPreferenceClickListener;
 import android.widget.Toast;
 public class MainActivity extends PreferenceActivity {
     
     Context mContext = null;
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         
         // 从资源文件中添Preferences ，选择的值将会自动保存到SharePreferences
         addPreferencesFromResource(R.xml.preference);
         mContext = this;
         //CheckBoxPreference组件
         CheckBoxPreference mCheckbox0 = (CheckBoxPreference) findPreference("checkbox_0");
         mCheckbox0.setOnPreferenceClickListener(new OnPreferenceClickListener() {
             @Override
             public boolean onPreferenceClick(Preference preference) {
                 //这里可以监听到这个CheckBox 的点击事件
                 return true;
             }
             });
         mCheckbox0.setOnPreferenceChangeListener(new OnPreferenceChangeListener() {
             @Override
             public boolean onPreferenceChange(Preference arg0, Object newValue) {
                 //这里可以监听到checkBox中值是否改变了
                 //并且可以拿到新改变的值
                 Toast.makeText(mContext, "checkBox_0改变的值为" + (Boolean)newValue, Toast.LENGTH_LONG).show();
                 return true;
             }
         });
     }
 }
 

Third, questions , results are shown , how to modify the summary, title font size ?
------ Solution ---------------------------------------- ----
custom CheckBoxPreference
public class MyCheckboxPreference extends CheckBoxPreference {

public MyCheckboxPreference (Context context, AttributeSet attrs) {
super (context, attrs);
}

@ Override
protected void onBindView (View view) {
/ / TODO Auto-generated method stub
super.onBindView (view);

ViewGroup preferenceLayout = (ViewGroup) view;
TextView title = (TextView) ((ViewGroup) preferenceLayout.getChildAt (1)). getChildAt (0);
TextView summary = (TextView) ((ViewGroup) preferenceLayout.getChildAt (1)). getChildAt (1);
}
}

onBindView call timing is the onclick callback , so it is necessary to MyCheckboxPreference click event in an instance variable to write a mTitleSize global variable , until onBindView time , setTextSize (mTitleSize);
---- - Solution --------------------------------------------

    <PreferenceCategory
             android:title="@string/inline_preferences">
             
         <CheckBoxPreference
                 android:key="checkbox_preference"
                 android:title="@string/title_checkbox_preference"
                 android:summary="@string/summary_checkbox_preference" 
                 android:layout="@layout/test"/>
 
     </PreferenceCategory>

test.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:orientation="vertical"
     android:layout_width="fill_parent"
     android:layout_height="fill_parent">
 
     <TextView android:id="@+android:id/title"
         android:layout_width="wrap_content" 
         android:layout_height="wrap_content" 
         android:textSize="40px"/>  
 
     <TextView android:id="@+android:id/summary"
         android:layout_width="wrap_content" 
         android:layout_height="wrap_content" 
         android:textSize="26px"/>
 
 </LinearLayout>

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tried or not ah ? What have you tried it ?
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help experts to help ah ? Do not sink ah, grateful .