获取手机存储可用空间的大小

获取手机内部可用空间大小 :

public long getInternalStorageAvailableSpace()
{
    long ret=0;
    File path = Environment.getDataDirectory();
    StatFs stat = new StatFs(path.getPath());
    long blockSize = stat.getBlockSize();
    long availableBlocks = stat.getAvailableBlocks();
    ret = availableBlocks * blockSize;
    return ret;
}

获取手机外部可用空间大小:

public long getSDCardAvailableSpace()
{
    long ret=0;
    File path = Environment.getExternalStorageDirectory();
    StatFs stat = new StatFs(path.getPath());
    long blockSize = stat.getBlockSize();
    long availableBlocks = stat.getAvailableBlocks();
    ret = availableBlocks * blockSize;
    return ret;
}