I am using multibit classic 0.5.19 which I can export the private key in text. I think I do not need to download wallet-key-tool the file from github and only need to download the tool on Windows to make a qrcode from the text private keys:
https://sourceforge.net/projects/zint/Correct? For answer which lead me to successful claim the BCC, I will reward 0.05 bitcoin, please leave your bitcoin address.
You can try with electroncash from
http://www.electroncash.org/Always get your BTC out of the wallet you are going to sweep first.
Windows:
In electroncash: tab wallet - private keys - sweep - enter priv. key - leave address unchanged - next etcetera
I used the wallet key tool myself to do this by the way, so you might want to use that too if the above does not work. I used both front page tools from an off-line computer, no problem.
Android:
In coinomi make a bitcoin cash wallet, when in it click the 3 dots top right and sweep wallet, enter priv key etc.
The qr maker link was dead when I tried it 3 weeks back, seems alive now, so I can't comment on that, but if you can make a qr of your priv key with it, you can sweep that the same way in coinomi by clicking the qr icon next to the text field, it will open your camera to scan.