package cn.com.sxp;

import android.app.Activity;
import android.os.Bundle;
import android.os.Environment;
import android.os.StatFs;

import java.io.File; 
import java.text.DateFormat; 
import java.text.SimpleDateFormat; 
import java.util.ArrayList; 
import java.util.Date; 
import java.util.HashMap; 
import java.util.List; 
import java.util.Map; 

import android.util.Log;
import android.view.View; 
import android.widget.AdapterView; 
import android.widget.AdapterView.OnItemClickListener; 
import android.widget.Button; 
import android.widget.ListView; 
import android.widget.SimpleAdapter; 
import android.widget.TextView; 
import android.widget.Toast; 

public class AccessSDActivity extends Activity {
    private final static String TAG = AccessSDActivity.class.getSimpleName();
 
    public void onCreate(Bundle savedInstanceState) { 
        super.onCreate(savedInstanceState); 
        setContentView(R.layout.main); 
 
        if(!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){
            //
            Log.d("sxp","挖槽~~~屁的sd卡啊");
            AccessSDActivity.this.finish();
        }
        
        // 存在sd卡,那就获得sd卡的路径吧
        File sdPath = Environment.getExternalStorageDirectory();
        Log.d("sxp","getExternalStorageDirectory is: " + sdPath);
        // Retrieve overall information about the space on a filesystem. This is a Wrapper for Unix statfs(). 
        StatFs statfs = new StatFs(sdPath.getPath());
        Log.d("sxp","the space on sdCard is: " + statfs.toString());
        
        // 获取sd卡的块大小
        long blockSize = statfs.getBlockSize();
        Log.d("sxp","blocksize is: " + blockSize);
        
        // 获取sd卡的块个数
        long blockCount = statfs.getBlockCount();
        Log.d("sxp","blockCount is: " + blockCount);
        
        // 空闲块个数
        long idleBlockCount = statfs.getAvailableBlocks();
        Log.d("sxp","idle block count is: " + idleBlockCount);
    } 
}