Swift change label text with button

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Swift change label text with button

Then we change the Label's text in Swift. So: With the approach here, we can use Swift code to change the values of controls in an iPhone program. Many things are possible. Name product.

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A dialog will appear prompting your for the name of your product. I suggest "ExampleTime" but you can choose another name. Open Main. This is automatically generated by Xcode for your program. A storyboard file contains interface controls like Labels or Buttons. Tip: We must add controls to Main. Continue with the next steps. Show object library. In the bottom right part of Xcode you will see an "Object Library" button.

This is an important button. It is shaped like a circle. Then: Click the object library button.

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Now scroll down through the controls we can add. Stop when you see "Label. Click: Next click the Assistant editor icon which has weird circles on it. This splits the screen—ideal for dragging things. Important: Your window should now have the iPhone interface with the label on the left and the ViewController.

Note: Blue lines will appear. Drop: Release the drag and a box will appear.A view that displays the value of the current Title property for a button. Use these properties primarily to configure the text of the button. For example:. Do not use the label object to set the text color or the shadow color.

Swift UILabel Tutorial: iPhone App, Uses ViewController

The title Label property returns a value even if the button has not been displayed yet. The value of the property is nil for system buttons. Language: Swift Objective-C. Instance Property title Label. SDKs iOS 3. Framework UIKit. Declaration var titleLabel : UILabel? See Also Configuring the Button Title. Returns the title associated with the specified state.

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State Sets the title to use for the specified state. Returns the styled title associated with the specified state. State Sets the styled title to use for the specified state. Returns the title color used for a state. State Sets the color of the title to use for the specified state. Returns the shadow color of the title used for a state. State Sets the color of the title shadow to use for the specified state.

Related Documentation.

Swift Change UIButton text

The current title that is displayed on the button.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information.

The idea is to write a message in a textField and have it change the label once I press a button. Swift uses the same cocoa-touch API. You can call all the same methods, but they will use Swift's syntax. In this example you can do something like this:. Note the setText method isn't available. Learn more. Ask Question. Asked 5 years, 10 months ago. Active 9 months ago. Viewed k times. I'm trying to change the text on a label in a simple iOS app.

I tried combing through the Apple documentation but came up with nothing. Akshay 2 2 silver badges 12 12 bronze badges. StevieKnox StevieKnox 1 1 gold badge 4 4 silver badges 6 6 bronze badges.

Active Oldest Votes. In this example you can do something like this: self. Connor Connor I tried similar combinations but none of them worked. Where do I specify the label ID "simpleLabel"?

26 Swift Xcode Label , Text field and button

Shakeel Ahmed Shakeel Ahmed 1, 17 17 silver badges 15 15 bronze badges. Sign up or log in Sign up using Google. Sign up using Facebook.

swift change label text with button

Sign up using Email and Password. Post as a guest Name.This means lots of hands on work and practice! In order to benefit the most from these lessons, you should open XCode and try to follow along. This is part 6 of the lesson plan. Click here for the entire Learning Plan. I highly recommend that you follow along on your own computer to get the most out of these lessons.

If you forgot how to do this, please refer to the tutorial on creating your first XCode project. Click on that file now in the Navigator. However, before we can do that, the ViewController needs to have references to the UILabel and the UIButton that we added to the view; otherwise, how does it know about them?

Interface Builder has an easy drag-and-drop way for us to create the properties in our ViewController and also assign the UIElements we create in Interface Builder to these properties of the ViewController.

This way, our ViewController will have references to these UIElements and it can do things with them!

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First, click the ViewController. It kinda looks like a butler icon. Check the screenshot below. Clicking that screen will give you a split window view. On the right hand side, you should be looking at ViewController. Once you have ViewController.

To handle a button click, we need a method in ViewController. Then we connect this method to the button click event of the UIButton in our view. Interface Builder provides an easy drag and drop way to create this method and all we need to do is fill in the code. So once again, turn on Assistant Editor view where we have two panes. The left hand side should have ViewController.

When we were creating properties, we had ViewController. If you have trouble changing the file on the right hand side, click the button circled in this screenshot:.How to in Swift change UIButton text?

A common mistake, also done by myself some time ago, is to try to change it through an IBAction. You can use an IBAction, but probably not the way you think.

A common mistake is to do something like this:. This will give a compiler error if you try something like that. I would make sense to be able to do it like that. Like in Visual Studio you can change text like that.

swift change label text with button

In the first method, we will use an IBOutlet to change the button text. First, create a UIButton somewhere on the storyboard. Second, create the IBOutlet the normal way. And you should end up with something like this:. Now in the viewDidLoad function, we will try to set a new title for the button. Try put in this into the viewDidLoad function:. If you try to run your code in the simulator now, your app will start up with the button called Ready.

The text from the storyboard should never even appear in your app. I have pasted the complete source code from the example below. In some cases, it might be more practical to use an IBOutlet, if your button should change text without any user interaction.

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If you want the text to change after the user clicked the button, the IBOutlet is not needed. You can do that from the IBAction directly. Here is how. Notice the first word in the parenthesis. It says sender, or at least it should say. That sender represents the UIButton.When you tap a button, or select a button that has focus, the button performs any actions attached to it. You communicate the purpose of a button using a text label, an image, or both.

The appearance of buttons is configurable, so you can tint buttons or format titles to match the design of your app. You can add buttons to your interface programmatically or using Interface Builder. Buttons use the Target-Action design pattern to notify your app when the user taps the button.

Swift Change UIButton text

Rather than handle touch events directly, you assign action methods to the button and designate which events trigger calls to your methods. At runtime, the button handles all incoming touch events and calls your methods in response. The signature of an action method takes one of three forms, which are listed in Listing 1. Choose the form that provides the information that you need to respond to the button tap.

Changing text of UIButton programmatically swift

You specify the type of a button at creation time using the init type: method or in your storyboard file. After creating a button, you cannot change its type. The most commonly used button types are the Custom and System types, but use the other types when appropriate. Buttons have five states that define their appearance: default, highlighted, focused, selected, and disabled.

When you add a button to your interface, it is in the default state initially, which means the button is enabled and the user is not interacting with it. As the user interacts with the button, its state changes to the other values. For example, when the user taps a button with a title, the button moves to the highlighted state.

When configuring a button either programmatically or in Interface Builder, you specify attributes for each state separately.

In Interface Builder, use the State Config control in the Attributes inspector to choose the appropriate state and then configure the other attributes. If you do not specify attributes for a particular state, the UIButton class provides a reasonable default behavior. For example, a disabled button is normally dimmed and does not display a highlight when tapped. Other properties of this class, such as the adjusts Image When Highlighted and adjusts Image When Disabled properties, let you alter the default behavior in specific cases.

The content of a button consists of a title string or image that you specify. You can access these objects using the title Label or image View properties and modify their values directly.It will also show you how to add click event handle method to the button to change the label text accordingly when user click the button.

swift change label text with button

Now the UI view components has been added successfully, we will add a button onClick event process method and an instance variable that refer to the label. Like in above video, just click the button and Control key at the same time, and drag the button to the ViewController class source code at right side. Then there will popup a dialog like below. Input onClick or any method name in the Name text box. Select Touch Up Inside in event drop down list.

Click Connect button, there will add a method in the ViewController source code. Now the button click event has a method to process, you can write code in the onClick method. But how to reference to the label? Click the label view component and press Control key at same time, and drag the label to right side ViewController source code.

It will also popup a dialog like below. StackView is a container view, it can group some child view together and frozen them to a block. And then you just need to add constraints to the StackView object to create the layout. Your email address will not be published. This site uses Akismet to reduce spam.

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