Android开发之SharedPreferences数据存储与提取

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直接代码
类，方法，参数，看API ，百度

布局文件

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context=".MainActivity" >    <Button        android:id="@+id/save_data"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="Save data"        />    <Button        android:id="@+id/restore_data"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_alignParentLeft="true"        android:layout_alignParentTop="true"        android:layout_marginTop="69dp"        android:text="Restore data" /></RelativeLayout>

package com.example.sharedpreferences;import android.os.Bundle;import android.app.Activity;import android.content.SharedPreferences;import android.util.Log;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;public class MainActivity extends Activity {    private Button saveData;    private Button restoreData;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        saveData=(Button)findViewById(R.id.save_data);        restoreData=(Button)findViewById(R.id.restore_data);        restoreData.setOnClickListener(new OnClickListener(){            public void onClick(View v)            {                SharedPreferences pref=getSharedPreferences("data",MODE_PRIVATE);                String name=pref.getString("name", "");                int age=pref.getInt("age", 0);                boolean married=pref.getBoolean("married", false);                Log.d("MainActivity", "name is "+name);                Log.d("MainActivity","age is "+age);                Log.d("MainActivity","married is"+married);            }        });        saveData.setOnClickListener(new OnClickListener(){            public void onClick(View v)            {                SharedPreferences.Editor editor=getSharedPreferences("data",MODE_PRIVATE).edit();                editor.putString("name", "Tom");                editor.putInt("age", 28);                editor.putBoolean("married", false);                editor.commit();            }        });    }    @Override    public boolean onCreateOptionsMenu(Menu menu) {        // Inflate the menu; this adds items to the action bar if it is present.        getMenuInflater().inflate(R.menu.main, menu);        return true;    }}

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