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Timothy Chiu
1,771 Points"Your factory method needs to take a ColoredCircle pointer", can someone show me how to complete this task?
We need a ColoredCircle factory method named "asteroid" which has color "grey" and a diameter of 1.5. Start by writing the declaration for this class method.
I am not familiar to iOS Design Patterns, and the video lecture so far did not explain clearly on how to complete this task, need somebody to walk me through with this assignment.
# import "ColorCircle.h"
@implementation ColoredCircle
+(asteroid) init {
return [self initWithDiameter:1.5 andColor:@"grey"];
}
+(asteroid) initWithDiameter:(float)d andColor: (NSString *)c {
self = [super iniWithDiameter:d];
.f (self) {
self.color = c;
}
return self;
}
@end
//
// ColoredCircle.m
// Alloc_Init_vid3
//
//
#import "ColoredCircle.h"
@implementation ColoredCircle
+(asteroid) init {
return [initWith Diameter: 1.5 and Color:@"grey"];
}
@end
3 Answers
Evgeny Mitko
13,578 PointsThe answer is:
asteroid.h
#import <Foundation/Foundation.h>
#import "ColorCircle.h"
@interface asteroid : NSObject
+(ColoredCircle *) asteroid;
@end
and asteroid.m (Moderator edited: for typo from "asteroid.h to asteroid.m)
//
// ColoredCircle.m
// Alloc_Init_vid3
//
//
#import "asteroid.h"
@implementation asteroid
+(ColoredCircle*) asteroid {
ColoredCircle*asteroid = [[ColoredCircle alloc] initWithDiameter: 1.5 andColor: @"grey"];
}
@end
Martin Wildfeuer
Courses Plus Student 11,071 PointsThe + (ColoredCircle *) asteroid method is missing the return statement, as far as I can tell. Can you confirm?
Chris Adamson
132,143 PointsIf you watch the power and flexibility lesson, the solution to the first part is at the bottom:
+(ColoredCircle*) asteroid;
Carmen Ibarcena
iOS Development Techdegree Student 8,296 Pointshello guys how you guys can answer the second part of this method I am stock and do not know how to do it! By calling the designated initializer, code the implementation for the asteroid class method.
Martin Wildfeuer
Courses Plus Student 11,071 PointsMartin Wildfeuer
Courses Plus Student 11,071 PointsI really recommend doing the Objective-C basics course first before diving into iOS design patterns, which is an intermediate course. Please don't get me wrong, I am only trying to help here.