问题
I'm aware that this question has been asked before for earlier versions of iOS, however, as far as I remember, people at the WWDC this year emphasised that we can finally customise everything very easily, e.g. the tint colours of switches (UISwitch onTintColor etc.).
I had a look at the AlertView but the only options are password input / text input. Perhaps I'm missing something obvious here, but is it still not possible to change the background tint colour of an UIAlertView in iOS 5 easily? All the other UIAlertViews in iOS are blackish/transparent, so there should be an easy way or not?
I checked the docs but couldn't find anything specific for iOS 5.
回答1:
I have no idea if the background color can be changed that easily in iOS5 but traditionally speaking changing UIAlertView background is to do with setting a new image. The link you provided & this link provide help.
来源：https://stackoverflow.com/questions/7984732/ios-5-black-transparent-uialertview