great job!
Jan I don't have an android phone but can you test something for me.
1. on the phones web browser go here and click on the URI link in the first section.
http://lovebitcoins.org/developers.htmldoes it open your wallet app and pre-compose a send bitcoins transaction with the address and amount filled in? and then wait for the "send" button to be pressed?
2. use your app to scan the QR code in the second section. does it also bring in the address and amount?
if so we will add you to the recommended wallets list on BitPay as being fully URI compatible
https://bitpay.com/bitcoin-compatible-wallets