Question

I want to create a grid view of buttons which will be created dynamically .and on click of button in grid view different task for every button.how can i do this any help will be appreciate?

Answer 1

I have done This Before Using Scroll View This May help you.

       int number_of_types = 20; // (no of total buttons )


int btncount=0;
        int number_of_buttons_in_row = 4;
        CGFloat screen_width = 280.0, button_width = 70;

        CGFloat xpadd = (screen_width - ( number_of_buttons_in_row * button_width ))/(number_of_buttons_in_row+1);

        CGFloat x_coord, y_ccord;
        int buttonXOffset, buttonYOffset, buttonWidth, buttonHeight;
        buttonWidth = 57;
        buttonHeight = 57;

        x_coord = 20;
        y_ccord = 70;

        int number_of_rows;

        if((number_of_types % number_of_buttons_in_row) == 0)
            number_of_rows = number_of_types / number_of_buttons_in_row;
        else 
            number_of_rows = number_of_types / number_of_buttons_in_row + 1;

        int number_of_buttons_count = 0;
        for (UIView * view in scrollBack.subviews) {
            if(view.tag!=999 )
            {   
                [view removeFromSuperview];
                view = nil;
            }
        }

        for (int i = 0; i< number_of_rows; i++) {
            for (int j=0; j<number_of_buttons_in_row; j++) {

                buttonXOffset = 75;
                buttonYOffset = 58;
                UIButton *btn=[UIButton buttonWithType:UIButtonTypeRoundedRect];
                btn.frame = CGRectMake(40, 0, 57, 57);

                x_coord += button_width/2 + xpadd;
                btn.center = CGPointMake(x_coord, y_ccord);

                [scrollBack addSubview:btn];

                buttonXOffset = x_coord - buttonWidth/2;
                buttonYOffset = y_ccord - buttonHeight/2;


                UILabel * label = [[UILabel alloc] initWithFrame:CGRectMake(buttonXOffset, buttonYOffset + buttonHeight + 4, buttonWidth+7, 28)];



                btn.tag= btncount;

                [btn setTitle:@"your Title "];
//if titles are in a Array  then you can Use 

    [btn setTitle:[titleArray objectatindex:btncount] forState:UIControlStateNormal];


                [btn addTarget:self action:@selector(yourFunction:) forControlEvents:UIControlEventTouchUpInside];

                label.text = [titleArray objectatindex:btncount];






                label.tag = 777;
                label.backgroundColor = [UIColor clearColor];
                label.font=[UIFont fontWithName:@"Helvetica" size:11];
                label.font=[UIFont boldSystemFontOfSize:11];
                label.textAlignment = UITextAlignmentCenter;
                label.numberOfLines = 0;

                [scrollBack addSubview:label];
                [label release];

                x_coord += button_width/2;
                number_of_buttons_count++;
                if(number_of_buttons_count == 20)
                    break;

                btncount++;

            }
            if(number_of_buttons_count == 20)
                break;
            y_ccord += 120;
            x_coord = 20;



        }
        scrollBack.contentSize = CGSizeMake(320, buttonYOffset + 200);



    }