Let alert = UIAlertController(title: 'AlertController Tutorial', message: 'Submit something', preferredStyle:.alert) In the first line, we set a simple string as a title of the alert. In the second line is the message string that will be displayed right below the title. In the third line, the alert's type is set to.alert. Jan 30, 2019  To create a dialog box in swift we’ll make use of UIAlertController which is an important part of UIKit. We’ll do this with help of an iOS application and a sample project. First of all, we’ll create an empty project, then inside its default view controller, we’ll perform the following operations.

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A Dialog is small window that prompts the user to a decision or enter additional information.

Some times in your application, if you wanted to ask the user about taking a decision between yes or no in response of any particular action taken by the user, by remaining in the same activity and without changing the screen, you can use Alert Dialog.

In order to make an alert dialog, you need to make an object of AlertDialogBuilder which an inner class of AlertDialog. Its syntax is given below

Now you have to set the positive (yes) or negative (no) button using the object of the AlertDialogBuilder class. Its syntax is

Apart from this , you can use other functions provided by the builder class to customize the alert dialog. These are listed below

After creating and setting the dialog builder , you will create an alert dialog by calling the create() method of the builder class. Its syntax is

This will create the alert dialog and will show it on the screen.

Dialog fragment

Before enter into an example we should need to know dialog fragment.Dialog fragment is a fragment which can show fragment in dialog box

List dialog

It has used to show list of items in a dialog box.For suppose, user need to select a list of items or else need to click a item from multiple list of items.At this situation we can use list dialog.

Single-choice list dialog

It has used to add single choice list to Dialog box.We can check or uncheck as per user choice.

Example

The following example demonstrates the use of AlertDialog in android.

To experiment with this example , you need to run this on an emulator or an actual device.

Here is the modified code of src/MainActivity.java

Here is the modified code of res/layout/activity_main.xml

In the below code abc indicates the logo of tutorialspoint.com

Here is ofStrings.xml

Here is the default code of AndroidManifest.xml

Let's try to run your application. I assume you have connected your actual Android Mobile device with your computer. To run the app from Android studio, open one of your project's activity files and click Run icon from the toolbar. Before starting your application, ]Android studio will display following window to select an option where you want to run your Android application.

Select your an option and then click on it. For suppose, if you have clicked on yes button, then result would as follows

Simple Alert Dialog In Swift For Macos Download

if you click on no button it will call finish() and it will close your application.