SharedPreferences的基本数据写入和读取

1、布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <Button
        android:id="@+id/btn"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="我是一个按钮" />

    <Button
        android:id="@+id/btn1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="恢复数据吧少年" />
</LinearLayout>

2、java文件

package lpc.com.project631;

import android.app.Activity;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

/**
 * Created by Administrator on 2016/1/7.
 */
public class MainActivity1 extends Activity implements View.OnClickListener{


    /**
     * oncreate方法里很简单，只有两个按钮，绑定了OnClick方法
     * */
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button button = (Button) findViewById(R.id.btn);
        Button button1 = (Button) findViewById(R.id.btn1);
        button.setOnClickListener(this);
        button1.setOnClickListener(this);
    }

    /**
     * 根据不同的按钮，触发不同的逻辑，
     * */
    @Override
    public void onClick(View v) {
        switch (v.getId()){
            case R.id.btn:
                SharedPreferences.Editor editor = getSharedPreferences("data",MODE_PRIVATE).edit();
                editor.putString("name","刘朋程");
                editor.putInt("age",28);
                editor.apply();
                break;
            case R.id.btn1:
                SharedPreferences pref = getSharedPreferences("data",MODE_PRIVATE);
                String name = pref.getString("name","李莉");
                int age = pref.getInt("age",27);
                Toast.makeText(MainActivity1.this,"我的名字是" + name + "我的年龄是" +
                        age,Toast.LENGTH_SHORT).show();
                break;
            default:
                break;
        }
    }
}

来自为知笔记(Wiz)