iOS UI ScrollView

  Total Views : 120
  Comments : 0
 
  Keywords : iOS uiscrollview example in swift using xcode, How to use scroll view in ios swift application with example, Create and configure ios scrollview to storyboard in swift using xcode editor

Here we will learn iOS ui scroll view in swift with example and how to use iOS uicontrol scrollview in swift to show the content which is larger than visible area with example using xcode.

iOS UI Scroll View

In iOS scroll view is used to show the content which is larger than the scroll view boundaries like viewing larger content in documents, showing multiple images in app. In our iOS application whenever we see the scroll view it is indication that there is extra content other than visible area.

 

By default, the scroll view has no appearance but whenever we interact with app by tapping or touching the scroll view will appear to show extra content like as shown below

 

ios ui scroll view sample example

 

We can use Scroll View in our iOS applications by adding UIScrollView class reference.

 

Now we will see how to use iOS UI scroll view in our iOS applications with example.

Create iOS Scroll View App in Swift

To create new project in iOS Xcode open Xcode from /Applications folder directory. Once we open Xcode the welcome window will open like as shown below. In welcome window click on the second option “Create a new Xcode Project” or choose File --> New --> Project

 

Xcode application to create ios project

 

After selecting “Create a new Xcode project” a new window will open in that we need to choose template.

 

The new Xcode window will contain several built-in app templates to implement common type of iOS apps like page based apps, tab-based apps, games, table-view apps, etc. These templates are having pre-configured interface and source code files. 

 

For this iOS Scroll View example, we will use most basic template “Single View Application”. To select this one, Go to the iOS section in left side --> select Application --> In main area of dialog select “Single View Application” and then click on next button like as shown below.

 

Select single view application from ios xcode templates

 

After click Next we will get window like as shown below, in this we need to mention project name and other details for our application.

 

Product Name: “iPhone Articles”

 

The name whatever we enter in Product Name section will be used for the project and app.

 

Organization Name: “Tutlane”

 

You can enter the name of your organization or your own name or you can leave it as blank.

 

Organization Identifier: “com.developersociety”

 

Enter your organization identifier in case if you don't have any organization identifier enter com.example.

 

Bundle Identifier: This value will generate automatically based on the values we entered in Product Name and Organization Identifier.

 

Language: “Swift”

 

Select language type as “Swift” because we are going to develop applications using swift.

 

Devices: “Universal”

 

Choose Devices options as Universal it means that one application is for all apple devices in case if you have any specific requirement to run app only for iPad then you can choose the iPad option to make your application restricted to run only on iPad devices.

 

Use Core Data: Unselected

 

This option is used for database operations. In case if you have any database related operations in your application select this option otherwise unselect the option.

 

Include Unit Tests: Unselected

 

In case if you need unit tests for your application then select this option otherwise unselect it.

 

Include UI Tests: Unselected

 

In case if you need UI tests for your application then select this option otherwise unselect it.

 

Once you finished entering all the options then click on Next button like as shown below.

 

ios create new scroll view app in swift using xcode editor

 

Once we click on Next button new dialog will open in that we need to select the location to save our project. Once you select the location to save project then click on Create button like as shown below.

 

Give path to save new ios application in xcode

 

After click on Create button the Xcode will create and open a new project. In our project Main.storyboard and ViewController.swift are the main files which we used to design the app user interface and to maintain source code. 

 

Main.storyboard - Its visual interface editor and we will use this file to design our app user interface 

 

ViewController.swift - It contains source code of our application and we use this file to write any code related to our app.

 

Now in project select Main.storyboard file the Xcode will open visual interface editor like as shown below.

 

ios scroll view app storyboard file in xcode

 

Now select ViewController.swift file in your project that view will be like as shown below.

 

ios scroll view app viewcontroller file in xcode

Add iOS UI Controls to View in Xcode

Now we will add controls to our application for that open Object Library. The Object Library will appear at the bottom of Xcode in right side. In case if you don't find Object library, click on the button which is at the third position from the left in the library selector bar like as shown below. (Alternatively you can choose View --> Utilities --> Show Object Library.)

 

Object Library in Xcode Application to Search for UI Controls

 

As we discussed our user interface will be in Main.storyboard file so open Main.storyboard file. Now in Object library search for the Scroll View in Filter field then drag and drop the Scroll View into Main.storyboard ViewController like as shown below.

 

ios add scroll view control in swift app from object library

 

Now drag button from Object library and drop into the ViewController file after that click on button and change the name “Hello Scroll” like as shown below

 

ios ui scroll view app add button control in xcode

Connect iOS UI Controls to Code in Swift

Now we will make connection between controls and ViewController.Swift code for that click on assistant button (overlap circle) in Xcode toolbar right side corner like as shown below

 

Assistant Editor in iOS Xcode to Mapp Controls with Code

 

To map the controls, press Ctrl button in keyboard and drag the Scroll View from canvas interface and drop into ViewController.swift file like as shown below

 

ios map ui controls to viewcontroller code in swift

 

Once we add controls to ViewController.swift file then write the custom code to show scroll by changing content size. Once we write all required functionality our ViewController.swift file code should be like as shown below.

 

//

//  ViewController.swift

//  Scroll View in iOS

//  Created by Tutlane on 09/08/2016.

//  Copyright © 2016 Tutlane.com. All rights reserved.

//

import UIKit

class ViewController: UIViewController {

@IBOutlet weak var scrollView: UIScrollView!

override func viewDidLoad() {

super.viewDidLoad()

scrollView.contentSize.height=1000

}

override func didReceiveMemoryWarning() {

super.didReceiveMemoryWarning()

// Dispose of any resources that can be recreated.

}

}

Now we will run and check the output of application. To run application, select the required simulator (Here we selected iPhone 6s Plus) and click on Play button, located at the top-left corner of the Xcode toolbar like as shown below.

 

Run ios scroll view application using xcode editor

Output of iOS Scroll View Application

Following is the result of iOS Scroll View application. If you observe we got scroll for our app because we set content size to 1000 in our code.

 

ios swift scroll view app example result

 

This is how we can use iOS ui scroll view in swift to show the larger content which is more than scroll view boundaries.

 
 
 

 Comments (0)

Be the first to give your valuable feedback

Leave a comment

  • Default Tutlane User