Creating a Vertical Slider Menu with UIButton in iPhone

Introduction

In this tutorial, we will explore how to create a vertical slider menu using UIButton and UIScrollView in iPhone. We will cover the steps involved in designing such a layout, including adding buttons to the slider, handling user interactions, and updating the layout accordingly.

Understanding the Requirements

To create a vertical slider menu with UIButton, we need to understand what makes up this UI component. The key elements are:

A UIScrollView that contains multiple UIButton instances
Each button has an image associated with it
When the user scrolls through the buttons, they should be centered horizontally within their respective positions

Understanding the Code Structure

Before diving into the code, let’s break down the structure of our project.

Header (.h) File

In this file, we will declare the necessary methods and variables. We will also import any required frameworks or libraries.

// UIButtonSliderMenu.h

#import <UIKit/UIKit.h>

@interface UIButtonSliderMenu : UIViewController

@property (nonatomic, strong) UIScrollView *scView;
@property (nonatomic, strong) NSArray<UIImage *> *arrBtnImages;

@end

Implementation (.m) File

In this file, we will implement the methods declared in the header file.

// UIButtonSliderMenu.m

#import "UIButtonSliderMenu.h"

@interface UIButtonSliderMenu ()

@property (nonatomic, assign) int viewWidth;
@property (nonatomic, assign) int viewHeight;
@property (nonatomic, assign) int viewOffsetX;
@property (nonatomic, assign) int viewOffsetY;
@property (nonatomic, assign) int viewXspace;
@property (nonatomic, assign) int ViewYspace;

@end

@implementation UIButtonSliderMenu

- (void)viewDidLoad {
    [super viewDidLoad];

    self.viewWidth = 40; // Button width
    self.viewHeight = 30; // Button height
    self.viewOffsetX = 5; // Button left (X)
    self.viewOffsetY = 5; // Button top (Y)
    self.viewXspace = 15; // Button from top (X) space
    self.ViewYspace = 5;   // Button from bottom (Y) space

    [self loadBtnInSlider];
}

- (void)loadBtnInSlider {
    int row = 1;
    int col = [self.arrBtnImages count] / row;

    if ([self.mut_arrImages count] % col != 0  ) {
        col++;
    }

    int index = 0;
    for (int i=0; i < row ; i++)
    {

        CGRect frame;
        frame.size = CGSizeMake(self.viewWidth, self.viewHeight);
        frame.origin.y = (i * self.viewHeight) + (i * self.ViewYspace) + self.viewOffsetY;

        for (int j= 0; j < col  &&& index < [self.mut_arrImages count]; j++) {

            CGRect frame;
            frame.size = CGSizeMake(self.viewWidth, self.viewHeight);
            frame.origin.x = (j * self.viewWidth) + (j * self.viewXspace) + self.viewOffsetX;
            frame.origin.y = self.viewOffsetY;

            UIButton *btn = [[UIButton alloc]initWithFrame:frame];
            [btn setTag:j];
            [btn addTarget:self action:@selector(btnSelector:) forControlEvents:UIControlEventTouchUpInside];
            [btn setUserInteractionEnabled:YES];
            [btn setImage:[UIImage imageNamed:[self.arrBtnImages objectAtIndex:j]] forState:UIControlStateNormal];

            index++;
            [self.scView addSubview:btn];
            [btn release];
        }
    }

    self.scView.setContentSize:CGSizeMake(col * (self.viewWidth+ self.ViewYspace)+self.viewOffsetY, self.scView.frame.size.height);
}

- (void)btnSelector:(id)sender {
    UIButton *btnSelected = sender;
   switch(btnSelected.tag) 
   {
      // add case as much u have button
      case 0:
       // first button called
      break;

      case 1:
       // second button called
      break;
      ::
      ::
   }
}

Conclusion

In this tutorial, we covered the steps involved in creating a vertical slider menu with UIButton and UIScrollView. We also explored how to implement the layout using code snippets.

Last modified on 2024-12-21