手机内存 和 sdcard的 大小的获取

/这个是手机内存的可用空间大小 

static public long getAvailableInternalMemorySize() {
        File path = Environment.getDataDirectory();
        StatFs stat = new StatFs(path.getPath());
        long blockSize = stat.getBlockSize();
        long availableBlocks = stat.getAvailableBlocks();
        return availableBlocks * blockSize;
    }

//这个是手机内存的总空间大小

    static public long getTotalInternalMemorySize() {
        File path = Environment.getDataDirectory();
        StatFs stat = new StatFs(path.getPath());
        long blockSize = stat.getBlockSize();
        long totalBlocks = stat.getBlockCount();
        return totalBlocks * blockSize;
    }

//这个是手机sdcard的可用空间大小

    static public long getAvailableExternalMemorySize() {
        if (Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())) {
            File path = Environment.getExternalStorageDirectory();
            StatFs stat = new StatFs(path.getPath());
            long blockSize = stat.getBlockSize();
            long availableBlocks = stat.getAvailableBlocks();
            return availableBlocks * blockSize;
        } else {
            return ERROR;
        }
    }

//这个是手机sdcard的总空间大小

    static public long getTotalExternalMemorySize() {
        if (Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())) {
            File path = Environment.getExternalStorageDirectory();
            StatFs stat = new StatFs(path.getPath());
            long blockSize = stat.getBlockSize();
            long totalBlocks = stat.getBlockCount();
            return totalBlocks * blockSize;
        } else {
            return ERROR;
        }
    }