iPhone UIView - Resize Frame to Fit Subviews

Question

Shouldn't there be a way to resize the frame of a UIView after you've added subviews so that the frame is the size needed to enclose all the subviews? If your subviews are added dynamically how can you determine what size the frame of the container view needs to be? This doesn't work:

[myView sizeToFit];

Answer 1

You could also add the following code to calculate subviews position.

[myView resizeToFitSubviews]

UIViewUtils.h

#import <UIKit/UIKit.h>

@interface UIView (UIView_Expanded)

-(void)resizeToFitSubviews;

@end

UIViewUtils.m

#import "UIViewUtils.h"

@implementation UIView (UIView_Expanded)

-(void)resizeToFitSubviews
{
    float w = 0;
    float h = 0;

    for (UIView *v in [self subviews]) {
        float fw = v.frame.origin.x + v.frame.size.width;
        float fh = v.frame.origin.y + v.frame.size.height;
        w = MAX(fw, w);
        h = MAX(fh, h);
    }
    [self setFrame:CGRectMake(self.frame.origin.x, self.frame.origin.y, w, h)];
}

@end