package com.wuyou.saveSD;

import java.io.File;

import java.io.FileWriter;

import java.io.IOException;

import android.app.Activity;

import android.os.Bundle;

import android.os.Environment;

import android.view.Menu;

import android.widget.Toast;

public class MainActivity extends Activity {

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        if(Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())) {//如果已经挂载

            //sd卡已经挂载，可以进行读写操作了

            try {

                File file = new File(Environment.getExternalStorageDirectory(), "test2.txt");

                FileWriter fileWriter = new FileWriter(file);

                fileWriter.write("无忧之路 - 博客园");

                fileWriter.close();

            } catch (IOException e) {

                e.printStackTrace();

            }

        } else {

            //sd未挂载，在此进行提示

            Toast.makeText(this, "sd卡不可用，请检查！", Toast.LENGTH_SHORT).show();

        }

    }

    @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;

    }

}