Android to determine if SD card exists and use capacity query

1. Determine if the SD card exists returns TRUE indicates that there is

1     /*determine if the SD card exists returns TRUE indicates that there is*/2      Public BooleanAvaiablemedia () {3String status =environment.getexternalstoragestate ();4 5         if(Status.equals (environment.media_mounted)) {6             return true;7}Else {8             return false;9         }Ten}

2. Get the SD card free space

1 /*get SD card free space*/2      Public Longgetsdfreesize () {3         //get SD card file path4File Path =environment.getexternalstoragedirectory ();5StatFs SF =NewStatFs (Path.getpath ());6         //gets the size of a single data block (Byte)7         LongBlockSize =Sf.getblocksizelong ();8         //the number of free data blocks9         LongFreeblocks =Sf.getavailableblockslong ();Ten         //return SD card idle size One         //return freeblocks * blockSize;//Unit byte A         //return (freeblocks * blockSize)/1024;//Unit KB -         return(Freeblocks * blockSize)/1024/1024;//units MB -}

3. Get all the space on the SD card

1 /*get all the space on your SD card*/2      Public Longgetsdallsize () {3         //get SD card file path4File Path =environment.getexternalstoragedirectory ();5StatFs SF =NewStatFs (Path.getpath ());6         //gets the size of a single data block (Byte)7         LongBlockSize =Sf.getblocksizelong ();8         //get the number of all data blocks9         LongAllblocks =Sf.getblockcountlong ();Ten         //return SD card size One         //return allblocks * blockSize;//Unit byte A         //return (allblocks * blockSize)/1024;//Unit KB -         return(Allblocks * blockSize)/1024/1024;//units MB -}

Android to determine if SD card exists and use capacity query