Objective C isn't that hard either. The syntax really throws you for a few hours, but as soon as you start coding, it makes sense.
There's a lot of dragging and dropping when building a UI in Interface Builder, but you're really not doing all that much. Just setting the instance methods in the class (this button instance variable points to this button on the screen, called outlets) and telling the button which method to call in the class (actions). Give it a couple of days, no problem.
Like Java, the power (and the time it takes) comes in learning the class library.