SharedPreferences使用一

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main.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:orientation="vertical" >    <TextView        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="@string/hello" /></LinearLayout>

ActivityMain

package com.android;import android.app.Activity;import android.content.Context;import android.content.SharedPreferences;import android.content.SharedPreferences.Editor;import android.os.Bundle;import android.widget.Toast;public class ActivityMain extends Activity {    /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);                //保存数据到SharedPreferences        SharedPreferences sharedPreferences = getSharedPreferences("test", Context.MODE_WORLD_READABLE);        //获取编辑器对象        Editor editor = sharedPreferences.edit();        editor.putString("name", "android");        editor.putInt("age", 2);        //提交修改        editor.commit();                //获取SharedPreferences中保存的数据        //SharedPreferences sharedPreferences = getSharedPreferences("test", Context.MODE_PRIVATE);        //getString()第二个参数为缺省值，如果preference中不存在该key，将返回缺省值        String name = sharedPreferences.getString("name", "");        int age = sharedPreferences.getInt("age", 1);        Toast.makeText(this, "name:"+name+",age:"+age, Toast.LENGTH_LONG).show();                                            }}

1.Context.MODE_PRIVATE指定该SharedPreferences数据只能被本应用程序读写

2.Context.MODE_WORLD_READABLE指定该SharedPreferences数据能被其他程序读，但不能写
3.Context.MODE_WORLD_WRITEABLE指定该SharedPrefernces数据能被其他程序读写

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