iOS:将NSString拆分为FilePath和Name + Extension

Question

iOS:将NSString拆分为FilePath和Name + Extension

我该如何拆分

@"blah/.../myfile.txt"

成

@"blah/.../myfile" 

和

@"txt"

Answer 1

NSString* fileName = [fileString stringByDeletingPathExtension];
NSString* extension = [fileString pathExtension];