获取SD卡剩余空间

File path=Environment.getExternalStorageDirectory();StatFs stat=new StatFs(path.getPath());long blockSize,totalBlocks,availableBlocks;if (Build.VERSION.SDK_INT>=Build.VERSION_CODES.JELLY_BEAN_MR2) {    blockSize=stat.getBlockSizeLong();    totalBlocks=stat.getBlockCountLong();    availableBlocks=stat.getAvailableBlocksLong();}else {    blockSize=stat.getBlockSize();    totalBlocks=stat.getBlockCount();    availableBlocks=stat.getAvailableBlocks();}System.out.println("剩余空间："+Formatter.formatFileSize(this, availableBlocks*blockSize));