How to remove customviews added programmatically? - iphone

Question

In one of the iPad Application, I am working I have added custom views to a view. This works fine but now I want to remove all the custom views added. How do I do that?
Following is my code for adding custom views
for (int col=0; col<colsInRow; col++) {
// NSLog(#"Column Number is%d",col);
x=gapMargin+col*width+gapH*col;
//self.styleButton=[[UIButton alloc] initWithFrame:CGRectMake(x, y, width, height)];
ComponentCustomView *componentCustomobject=[[ComponentCustomView alloc] initWithFrame:CGRectMake(x, y, width, height)];
componentCustomobject.backgroundColor=[UIColor redColor];
componentCustomobject.componentLabel.text=[appDelegate.componentsArray objectAtIndex:row];
[self.formConatinerView addSubview:componentCustomobject];
tempCount1++;
}

Answer 1

You can remove all the subviews of type ComponentCustomView from your parent views
for (UIView *view in self.formConatinerView.subviews) {
if ([view isKindOfClass:[ComponentCustomView class]) {
[view removeFromSuperview];
}
}

Answer 2

I'm not sure if removing objects from the array being iterated (in this case subviews) was safe or not (I remember reading something about a discrepancy between Mac OS X and iOS, but not sure...); Unless property subviews returns a copy of the internal array (very likely since the internal array needs to be mutable), a 100% safe, just-in-case way to do it would be this:
NSArray* copyOfSubviews = [[NSMutableArray alloc] initWithArray:[myView subviews]];
// Explicitly made mutable in an attempt to prevent Cocoa from returning
// the same array, instead of making a copy. Another, tedious option would
// be to create an empty mutable array and add the elements in subviews one by one.
for(UIView* view in copyOfSubviews){
if ([view isKindOfClass:[ComponentCustomView class]){
[view removeFromSuperview];
}
}
// (This is for non-ARC only:)
[copyOfSubviews release];

Answer 3

NSArray *arr = [self.view subViews];
for (UIView *view in arr) {
if ([view isKindOfClass:[ComponentCustomView class]) {
[view removeFromSuperview];
}
}