Question

I want to create view with 52 square or button (for 52 week in a year in one page) with grid but I don’t know how should I align them or how should I put them in a frame

(you will have 13 rows and 4 columns), but if you try this code it’s not algin :
I don’t know how should I create frame to put all of buttons in side of my frame..

Here is my code:

- (void)viewDidLoad
{
[super viewDidLoad];
int rows = 13, columns = 4;

for (int y = 0; y < rows; y++) {
    for (int x = 0; x < columns; x++) {
        UIButton * button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
        button.frame = CGRectMake(58 * x, 31 * y, 58, 31);

        [button addTarget:self action:@selector(buttonPressed:) forControlEvents:UIControlEventTouchUpInside];
        [self.view addSubview: button];

    }
}



}


 -(void)buttonPressed:(UIButton *)button
{
NSLog(@"button %u -- frame: %@", button.tag, NSStringFromCGRect(button.frame));
}

Answer 1

Instead of adding your buttons directly to your controller’s view, create a subview which will contain all your buttons. Then, center this subview.
Here is the code you could use :

int rows = 13, columns = 4;
UIView *buttonView = [[UIView alloc] initWithFrame:CGRectMake(0.f, 0.f, 58*columns, 58*rows)];
for (int y = 0; y < rows; y++) {
    for (int x = 0; x < columns; x++) {
        UIButton * button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
        button.frame = CGRectMake(58 * x, 31 * y, 58, 31);

        [button addTarget:self action:@selector(buttonPressed:) forControlEvents:UIControlEventTouchUpInside];
        [buttonView addSubview: button];

    }
}

// Center the view which contains your buttons
CGPoint centerPoint = buttonView.center;
centerPoint.x = self.view.center.x;
buttonView.center = centerPoint;
[self.view addSubview:buttonView];

If you want your buttons to occupy the whole view, play with the width and height of your buttons (you used 58 and 31).