回复：警察逮捕时是不是要按手印的？没有上过法庭是不是就没有犯罪？

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.