iOS Can't Add Subview!?!

[Blakeasd]

Hello,

I am new to iPhone programming, but I have done Mac programming since around 2009. I created a new "Single View" project in Xcode for the iPhone and I am attempting (without success) to add a subview. I created a subclass of UIView and called it "DrawingView". This is my DrawingView.m code:

#import "DrawingView.h"

@implementation DrawingView

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {

        [self setOpaque:YES];
        
    }
    return self;
}


- (void)drawRect:(CGRect)rect
{
    CGContextRef context = UIGraphicsGetCurrentContext();
    CGContextSetRGBFillColor(context, 1.0, 0.0, 0.0, 1.0);
    CGContextFillRect(context, self.frame);
};


@end

The goal was to have this view be red. In the standard view controller (the Xcode generated one) I add a field:

DrawingView *drawingView;

In the viewDidLoad: of the View controller I added this code (after [super viewDidLoad]):

   CGRect screenBounds;
    screenBounds = [[UIScreen mainScreen] bounds];
    [drawingView initWithFrame:screenBounds];
    [self.view addSubview:drawingView];

When I run my app I get the standard gray screen ! Why does this code not yield a red screen?

Thanks!

 

[ArtOfWarfare]

You never allocated memory for your DrawingView.

Somewhere in your code you should have something like:

drawingView = [[DrawingView  alloc] initWithFrame:screenBounds];

 

[Blakeasd]

Thanks! I completely forgot about that