回複：警察逮捕時是不是要按手印的？沒有上過法庭是不是就沒有犯罪？

The fingerprint will be taken when the arrest occurs!
Once arrested, the court will issue a bond. It is the court that will judge guilty or not.

Personally, I guess if approved to be no crime by the court, it should be ok, no matter the case you are arrested.