Since most forms of the pill actually can cause abortions rather than preventing conception, they count as murder. The 'morning after' pill is nothing but an abortion pill. That is it's purpose.
I do not have a proper answer for male contraceptive measures, so I will not state an opinion on that.
The morning after pill is the one you're thinking of here, not the regular birth control pills.
The birth control pill prevents conception and is something you take every day. The hormones in them prevent ovulation (the release of the egg). But the morning after pill is a pill you take the morning after, usually after situations like rape or unprotected sex, and is designed to prevent a fertilized egg from becoming embedded into the uterus. IUD's are another form of birth control that prevent the implantation of a fertilized egg into the uterus. IUD's and the morning after pill are typically considered to be the same as an abortion by most Christians because of the fact that they prevent the embedding of the fertilized egg.
As for male contraception, I know the Vatican opposes condoms because they believe people should only have sex for the purpose of procreation, but condoms simply prevent the release of sperm into a woman as well as the spread of STD's (mind you they're not 100% guaranteed and you can still get pregnant or become infected even while using a condom, but it notably decreases the chances of either happening). Spermicides are another contraceptive that kill off sperm. I'm not aware of any beliefs that are against them, they do not effect the implantation of a fertilized egg, they just prevent the egg from ever being fertilized.
IUD's and the morning after pill are the big ones that Christians oppose because of the fact that they prevent a fertilized egg from being embedded, therefore killing it off before it can grow any further which can essentially be viewed as an abortion. Condoms, birth control pills/patches/shots/vaginal rings, the sponge (which I'm sure they don't make anymore...), and spermicides are usually only looked down on by the denominations of Christians (mainly Catholics -basing this off the Vatican-) that believe married couples should only have sex for procreation, not recreation, so it all boils down to personal beliefs from there. But if you're simply looking for ways of avoiding contraception that could cause an abortion, simply look it up online and get the details on how they work. If it's simply preventing fertilization, then it's not an abortion.