Finding all UIButtons in subviews - ios

Question

I have a single UIButton in the view of my UIViewController. I also have ten more that are in a subview in the main view. I want to find all these buttons. So far I have:
-(void)findAllButtons{
for(UIView *view in self.view.subviews) {
if ([view isKindOfClass:[myButton class]]){
NSLog(#"found a button!");
}
}
}
It is only finding the single button though and not the other ten. Why is that? Shouldn't it iterate every single subview and then find them?

Answer 1

for (UIView *subView in scroll.subviews) {
if ([subView isKindOfClass:[UIButton class]]) {
UIButton *btn = (UIButton*)subView;
if (btn.tag == selectedButton.tag) {
btn.layer.borderWidth = 1.0f;
btn.layer.borderColor = [UIColor darkGrayColor].CGColor;
}else{
btn.layer.borderWidth = 1.0f;
btn.layer.borderColor = [UIColor clearColor].CGColor;
}
}
}

Answer 2

Just a few lines of code
-(void)findAllButtons {
[self findButtonsInSubviews:self.view.subviews];
}
- (void)findButtonsInSubviews:(NSArray *)subviews {
for(UIView *view in subviews) {
if ([view isKindOfClass:[UIButton class]]){
NSLog(#"found a button!");
} else {
[self findButtonsInSubviews:view.subviews];
}
}
}

Answer 3

A recursive function using Objective-C blocks like this will find all views of a given subclass type as specified in the test block in the view hierarchy of the given view:
NSMutableArray *marrAllButtons = [NSMutableArray new];
BOOL (^viewTest)(UIView*) = ^BOOL(UIView* viewToTest) {
return [view isKindOfClass:[UIButton class]];
};
void(^viewEnumerator)(UIView*) = ^(UIView* outerView){
for (UIView *view in outerView.subviews)
{
if (viewTest(view))
{
[marrAllButtons addObject:view];
}
else
{
viewEnumerator(view);
}
}
};
viewEnumerator(self.view);
NSLog(#"All Buttons %#", marrAllButtons);

Answer 4

- (NSMutableArray *)buttonsInView:(UIView *)view
{
NSArray *subviews = view.subviews;
NSMutableArray *buttons = [NSMutableArray array];
for (UIView *subview in subviews)
{
if ([subview isKindOfClass:[UILabel class]])
{
[buttons addObject:subview];
}
else if(subview.subviews)
{
[buttons addObjectsFromArray:[self buttonsInView:subview]];
}
}
return buttons;
}

Answer 5

Your method is right if all your button already have in self.view (main view).
Just set tag for all button to check and also make sure that all button are on the main view. I hope this will work.
-(void)findAllButtons{
for(UIView *view in self.view.subviews) {
if ([view isKindOfClass:[myButton class]]){
UIButton *button = (UIButton*)view;
NSLog(#"found a button with tag:%d",button.tag);
}
}
}

Answer 6

for(UIView * subView in view.subviews) // here write Name of you ScrollView.
{
// NSLog(#"test %#", [subView class]);
if([subView isKindOfClass:[UIButton class]])
{
UIButton *button = (UIButton*)subView;
[button setSelected:NO] ;
NSString *s1;
s1 = #",";
s1 = [s1 stringByAppendingString:[NSString stringWithFormat:#"%#",button.titleLabel.text ]];
s1 = [s1 stringByAppendingString:[NSString stringWithFormat:#"%#",#"," ]];
NSRange range = [temp_Colors_Name_comma rangeOfString:s1 ];
if(range.location == NSNotFound)
{
}
else
{
[button setSelected:YES];
}
}
}