Given that you know C# and Java, you should not have a great deal of trouble learning other C-family languages, including Swift.
Objective-C was/is a bit of an exception to this, as it's "funky" syntax could be a bit intimidating to developers coming from other languages - one of the motivations for Apple's switch to Swift was to address this.
Objective-C was/is a bit of an exception to this, as it's "funky" syntax could be a bit intimidating to developers coming from other languages - one of the motivations for Apple's switch to Swift was to address this.