package com.lucky.test46sharedpreferences_apply;

import android.content.SharedPreferences;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    SharedPreferences sharedPreferences;

    SharedPreferences.Editor editor;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        //实例化SharedPreferences，参数1为name（随意命名即可）、参数2为数据存储的模式

        sharedPreferences=getSharedPreferences("lucky",MODE_WORLD_READABLE);

        editor=sharedPreferences.edit();

        int count=sharedPreferences.getInt("count",1); //读取数据

        Toast.makeText(MainActivity.this,count+"",Toast.LENGTH_SHORT).show();

        editor.putInt("count",++count); //放入需要存储的数据

        editor.commit(); //数据提交，注意：一定不能忘

    }

}