如何判断SD卡是否已满

private boolean isSDCardFull() { File path = Environment.getExternalStorageDirectory(); StatFs statFs = new StatFs(path.getPath()); long blockSize = statFs.getBlockSize(); long totalBlocks = statFs.getBlockCount(); long availableBlocks = statFs.getAvailableBlocks(); if (availableBlocks * blockSize == 0) { return true; } return false; }