I have the following code to change the appearance of the UISearchBar in my application and it can be seen in the image below also:
for(int i = 0; i < [[searchBar subviews] count]; i++){
UIView *subView = [[searchBar subviews] objectAtIndex:i];
if([[NSString stringWithFormat:@"%@", [subView class]] isEqualToString:@"UINavigationButton"]){
UIButton *cancelButton = (UIButton *)subView;
CGRect buttonFrame = cancelButton.frame;
buttonFrame.size.height = 52;
[cancelButton setFrame:buttonFrame];
[cancelButton setTitle:@"Cancel" forState:UIControlStateNormal];
[cancelButton setBackgroundImage:[UIImage imageNamed:@"cancel.png"] forState:UIControlStateNormal];
[cancelButton setBackgroundImage:[UIImage imageNamed:@"cancel_pressed.png"] forState:UIControlStateHighlighted];
}
}
As you can see I am trying to change the height of the button contained in the UISearchBar with no luck. I do get reference to the button as I can change the text and the background Image is changed just not the height of the frame. I would just like the height of the button to be the same as the search box at 52px.
EDIT:
I have found a really hacky solution, but it's not very elegant of adding a UIButton as the subview of the Cancel Button. It does the job but as I say it's not very nice.
其实你可以使用下面的方法来访问取消按钮:
UIBarButtonItem *cancelButton = [UIBarButtonItem appearanceWhenContainedIn:[UISearchBar class], nil];
So I override -layoutSubViews
with this, but theres 2 issues I have
I hate iterating through the views to find the matching view, and it messes up the animation a little bit
- (UIButton *)cancelButton {
for (UIView *v in self.subviews) {
if ([v isKindOfClass:[UIButton class]]) {
NSString *caption = [[((UIButton *)v) titleLabel] text];
if ([caption isEqualToString:@"Cancel"] )
return (UIButton *)v;
}
}
return nil;
}
- (BOOL)cancelButtonIsShowing {
return ([self cancelButton] != nil);
}
- (void)layoutSubviews {
[super layoutSubviews];
if ([self cancelButtonIsShowing]) {
UIButton *cancelButton = [self cancelButton];
UIImage *i = [UIImage imageNamed:@"Cancel_BTN"];
CGRect f = CGRectMake(267, 5, i.size.width, i.size.height);
cancelButton.frame = f;
}
}
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