How to implement Static CGRect and CGFloat

Question

I'm looking on the net but I can not find a clear answer ..          In your opinion what is the best way to make these functions static?

CGRect ScreenRect = [[UIScreen mainScreen] bounds]; 
CGFloat screenwidth = screenRect.size.width; 
CGFloat screenHeight = 64; 

I need to call them several times in my UIView class and can not figure out how to implement this in a clean and elegant?

example actual code

-(id)initializeNetworkDetect:(NSString *)detectMessage {
    CGRect screenRect = [[UIScreen mainScreen] bounds];
    CGFloat screenWidth = screenRect.size.width;
    CGFloat screenHeight = 64;

    networkView = [self initWithFrame:CGRectMake(0, -220, screenWidth, screenHeight)];

    if (networkView) {
        networkView.backgroundColor = BCKNETWORKVIEW;
        labelNetwork = [[UILabel alloc] init];
        [labelNetwork setFrame:CGRectMake(0, 4, 320, 30)];
        [labelNetwork setFont:[UIFont boldSystemFontOfSize:11]];
        [labelNetwork setBackgroundColor : [UIColor clearColor]];
        [labelNetwork setTextColor: [UIColor whiteColor]];
        [labelNetwork setAdjustsFontSizeToFitWidth:TRUE];
        [labelNetwork setText:detectMessage];
        labelNetwork.textAlignment = NSTextAlignmentCenter;
        labelNetwork.lineBreakMode = NSLineBreakByWordWrapping;
        labelNetwork.numberOfLines = 2;
        [networkView addSubview:labelNetwork];

        NSString *successAlertString = [[NSString alloc] init];
        successAlertString = detectMessage;

        tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(endTapping)];
        tapGesture.cancelsTouchesInView = NO;
        [self setUserInteractionEnabled:YES];
        [self addGestureRecognizer:tapGesture];
    }

    return self;
}

-(void)showNetworkMessage {
    CGRect screenRect = [[UIScreen mainScreen] bounds];
    CGFloat screenWidth = screenRect.size.width;
    CGFloat screenHeight = 64;

    screenRect = CGRectMake(0, 0, screenWidth, screenHeight);
    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:0.25];
    [UIView setAnimationDelegate:self];
    self.frame = screenRect;
    [UIView commitAnimations];
}

-(void)setHideAnimationNetwork{

    CGRect screenRect = [[UIScreen mainScreen] bounds];
    CGFloat screenWidth = screenRect.size.width;
    CGFloat screenHeight = 64;

    screenRect = CGRectMake(0, -220, screenWidth, screenHeight);
    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:0.25];
    [UIView setAnimationDelegate:self];
    [UIView setAnimationDidStopSelector:@selector(deleteAnimation)];
    self.frame = screenRect;
    [UIView commitAnimations];
}

Answer 1

I'm solved with #define

#define RECT_SCREEN_Width_Size [UIScreen mainScreen].bounds.size.width
#define RECT_SCREEN_Height_Size 64

call them directly in the code #define and is suitable for all devices