PreferenceActivity 自动保存属性

package com.example.preference;

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 MainActivity1 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.checkbox);

    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;

        }

    });

    CheckBoxPreference mCheckbox1 = (CheckBoxPreference) findPreference("checkbox_1");

    mCheckbox1.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;

        }

    });

    mCheckbox1.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_1改变的值为" +  (Boolean)newValue, Toast.LENGTH_LONG).show();

        return true;

        }

    });

    }

}

checkbox.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:title="CheckBox_A"

        android:summary="这是一个勾选框A" >

    </CheckBoxPreference>

    <CheckBoxPreference android:key="checkbox_1"

        android:title="CheckBox_B"

        android:summary="这是一个勾选框B" >

    </CheckBoxPreference>

    </PreferenceCategory>

</PreferenceScreen>