Question

How to remove subviews from superviews and redraw on a click a button click?

float padding = 5.0;
        float view_width = 95.0;
        float view_height = 120.0;
        int rows = 0.0f;
        int columns = 0.0f;



        UIView *myAddedView ;


        for (int i=0; i<[product.CorrentAnswer intValue]; i++) 
        {
            if(i%3 == 0 && i > 0)
            {
                columns = 0.0f;
                rows += view_height;
            }

            myAddedView =[[[UIView alloc] initWithFrame:CGRectMake(padding+columns, rows, view_width, view_height)] autorelease];
            myAddedView.backgroundColor = [UIColor clearColor];


            CGRect myImageRect = CGRectMake( 40, 100.0f, 40.0f, 40.0f);
            UIImageView *myImage = [[UIImageView alloc]initWithFrame:myImageRect];

            NSString *imageName = [NSString stringWithFormat:@"%@",product.imagename];
            [myImage setImage:[UIImage imageNamed:imageName]];
            [myAddedView addSubview:myImage]; 
            [viewarray addObject:myAddedView];

            [self.view addSubview:myAddedView];
            columns+= view_width;   
        }

i want to remove myAddedView from self.view?

hope to get answer very soon….

Answer 1

you can do this by assigning a tag to myAddedView ….

code change :

myAddedView =[[[UIView alloc] initWithFrame:CGRectMake(padding+columns, rows, view_width, view_height)] autorelease];
            myAddedView.backgroundColor = [UIColor clearColor];
//add this line
myAddedView.tag = 10;

and on the button click(when you want to remove the subview) write :

if([self.view viewWithTag:10]!=nil)
{
   [[self.view viewWithTag:10] removeFromSuperView];
}

thanks