SD card - Android

Below is the Android code that checks if SD card is available or not.. Also it checks if the SD card has free memory or not..

private void checkExternalStorageState() {
     String state = Environment.getExternalStorageState();
     if (Environment.MEDIA_MOUNTED.equals(state)) {
        mExternalStorageAvailable = mExternalStorageWriteable = true;
     } else if (Environment.MEDIA_MOUNTED_READ_ONLY.equals(state)) {
        mExternalStorageAvailable = true;
       mExternalStorageWriteable = false;
     } else {
       mExternalStorageAvailable = mExternalStorageWriteable = false;





}