共通コードリファレンス(SDCard)

package com.fredric.util;



/*-

 * SD 

 */



import java.io.File;

import android.os.Environment;

import android.os.StatFs;



public class SDCardUtils {



    // SA 

    //Environment android 

    //MEDIA_MOUNTED SD 

    //MEDIA_REMOVED  

    //MEDIA_UNMOUNTED  ， 

    //MEDIA_BAD_REMOVAL SD 

    //MEDIA_CHECKING  

    //MEDIA_SHARED  USB 

    //MEDIA_UNMOUNTABLE  

    public static boolean isSDCardEnable(){        

        return Environment.getExternalStorageState()

                .equals(Environment.MEDIA_MOUNTED);

    }

    

    // SD 

    public static String getSDCardPath(){

        return Environment.getExternalStorageDirectory().getAbsolutePath()

                + File.separator; // '/'

    }

    

    // SA ( M)

    public static long getSDCardSize(){

        if(isSDCardEnable()){

            

            StatFs stat = new StatFs(getSDCardPath());

            //getBlockCount  SD block 

            //getAvailableBlocks SD block 

            long num  = (long) stat.getAvailableBlocks();

            long size = (long)stat.getBlockSize();

            return (num * size)/1024/1024;

            

        }else{

            return 0;

        }

    }

    

}