Spinners are like a drop-down menu which contains a list of items to select from. Once a value is selected the Spinner returns to its default state with that selected value. After Android 3. Instead, the first item is displayed. Data inside a spinner is loaded with an Adapter.

Take the following scenario: Imagine you need to charge your phone. For that, you must connect your phone charger to the electricity board using a pin adapter.

Then the adapter provides your phone with electricity. In Android, the Spinner is like your phone which is loaded with data using an Adapter. The adapter sets the data as well as the layout for the items to be loaded in the Spinner. It consists of two methods:.

spinner in kotlin android

It hosts a single Spinner at the moment. In the above code: Thanks to Kotlin Android extensions, the xml Spinner widget is automatically available in our Kotlin Activity class. These are filled in the adapter using the ArrayAdapter.

spinner in kotlin android

By default, the TextView is left aligned in this type of layout. How does this prevent? Inside the onItemSelected function, we use the when statement to trigger a Toast for the respective Spinner item.

The following is the output when the above application was run on an emulator. You can download the source code of the above project from the link below. That brings an end to this tutorial on Android Spinners Using Kotlin. Your email address will not be published.

Custom Spinner - Android Studio Tutorial

I would love to connect with you personally. What will you learn? Table of Contents 1 Android Spinners 1. To show prompts, you should use dialog as the spinnerMode value. Prev Kotlin Interview Questions. Shoot him queries. Follow Author. Leave a Reply Cancel reply Your email address will not be published. Leave this field empty. Newsletter for You Don't miss out! Subscribe To Newsletter.

We promise not to spam you. Unsubscribe at any time. Generic selectors. Exact matches only. Search in title. Search in content.According to your android app theme, sometimes you need to make custom colors and design for spinners. This tutorial will help you to achieve this feature. Spinner will inflate the view from this layout file. We can set any image and text in the above file Kotlin file as well.

We will do this in the adapter file. Now focus on the getView method. Now it is time to add some fruit images in our project. Click on the below link to download the fruit images. Download fruit images. This is the string array variable.

Similarly, Second line is defining another variable but it is integer array. Then after there is one code block. This code block will be run when the user interact with the spinner. When the user opens the spinner and selects any option, compiler will run onItemSelectedListener method. This method will show one Toast to the user.

Toast message contains the position of the selected option as well as the name and image of the fruit. Compiler will call the onNothingSelected method, when the user do not select any option from the spinner.

Click here to get full source code. Tags: android Kotlin spinner. I am mobile app developer. I am always passionate about solving complex and real world problems. I have developed many apps with great interest and superior logical skills. December 7, August 19, March 17, Your email address will not be published.

Save my name, email, and website in this browser for the next time I comment. Creating a custom spinner can help you to make greater look and feel of your android app. Leave a Reply Cancel reply Your email address will not be published. Search Tutorials Search for:. Context import android. LayoutInflater import android.

View import android. ViewGroup import android. BaseAdapter import android. ImageView import android. AppCompatActivity import android. Bundle import android.Spinner is a widget, of course defined in the android. In this tutorial we want to see how to set array of items in our spinner.

Our programming language is Kotlin. We also see how to retrieve the selected item and display them in a Toast. Well we have a video tutorial as an alternative to this. If you prefer tutorials like this one then it would be good you subscribe to our YouTube channel.

Android platform provides a powerful and flexible way of adding static content as a resource. These static content will also be packaged into the APK file. The static content will be stored either as a resource or as an asset. We will do so inside the onCreate method of Activity. Android apps can be mainly written in Java or Kotlin. These days however there are many frameworks like Flutter also which use languages like Dart.

This is our launcher activity as the name suggests. This means it will be the main entry point to our app in that when the user clicks the icon for our app, this activity will get rendered first.

We override a method called onCreate. Here we will start by inflating our main layout via the setContentView method. Around 5 years ago, my life changed when I got enrolled in Software Engineering at the undergraduate level rather than Law. Since then I have fallen in love with coding. When not coding am probably meditating or going for long Savanna walks. Subscribe to my YouTube Channel below.

Save my name, email, and website in this browser for the next time I comment. Press ESC to close. Silver Membership. Get It Now. Share Article:. Tags: Android Spinner Kotlin. Oclemy Around 5 years ago, my life changed when I got enrolled in Software Engineering at the undergraduate level rather than Law.Passionate about writing clean solid code.

This project is simple enough; we just need a TextView inside a ConstraintLayout. You will also want to set the width for the ConstraintLayout to something like dp. For the main fragment layout, we want a RecyclerView flanked by two buttons. So far, this looks decent, but it would be nice to fade the edges of the RecyclerView. To do this, we need a drawable. Note that the gradient will always span the full view.

To compensate for this, we can set the center color to have no alpha and then offset it. This will create a three-color band with a transparent center. Next, we can add this to our layout on top of the RecyclerView. This will be the last item in the constraint layout.

Now we need a class that extends ViewModel. It will hold our data for the recycler view and the item we are viewing.

spinner in kotlin android

However, this setup will allow us to watch for changes of the selected month. This could be used to update other parts of our view. When it comes to data, we need to generate it. This may seem like overkill if you just need the months, but if you need specific date manipulation, this is what you would do. Note that the first and last dates in the list are epoch dates. For this spinner, the first and last dates need to be dummy values so that the items can be centered properly.

Depending on the size of your items, you may be able to see more than three items at a time in the spinner. The next step is to create the recycler adapter. This will create each item in the recycler when it is needed. Extend RecyclerView. Adapter, and provide a ViewHolder. The first two require no explanation. The onBindViewHolder provides a way to set our data from the view model to the items in the RecyclerView.

Because of our extra first and last item, we need to make sure that we set the text to empty strings and reset the onClickListener. This is important because the RecyclerView will reuse items in the list when they fall out of view.

Notice that I pass in a function for the onClickListener for the items in the list. The onCreateView is easy.According to your android app theme, sometimes you need to make custom colors and design for spinners.

This tutorial will help you to achieve this feature. Spinner will inflate the view from this layout file. We can set any image and text in the above file Kotlin file as well. We will do this in the adapter file. Now focus on the getView method. Now it is time to add some fruit images in our project. Click on the below link to download the fruit images. Download fruit images. This is the string array variable. Similarly, Second line is defining another variable but it is integer array.

Then after there is one code block. This code block will be run when the user interact with the spinner. When the user opens the spinner and selects any option, compiler will run onItemSelectedListener method. This method will show one Toast to the user.

Toast message contains the position of the selected option as well as the name and image of the fruit. Compiler will call the onNothingSelected method, when the user do not select any option from the spinner. Click here to get full source code. Tags: android Kotlin spinner. I am mobile app developer. I am always passionate about solving complex and real world problems.

I have developed many apps with great interest and superior logical skills. July 16, July 9, January 10, Your email address will not be published.

Save my name, email, and website in this browser for the next time I comment. Creating a custom spinner can help you to make greater look and feel of your android app.

Leave a Reply Cancel reply Your email address will not be published. Search Tutorials Search for:. Context import android. LayoutInflater import android. View import android. ViewGroup import android. BaseAdapter import android. ImageView import android. AppCompatActivity import android. Bundle import android.

AdapterView import android. Spinner import android.Android Spinner is a view similar to dropdown list which is used to select one option from the list of options. It provides an easy way to select one item from the list of items and it shows a dropdown list of all values when we click on it. Default value of the android spinner will be currently selected value and by using Adapter we can easily bind the items to spinner object.

Generally, we populate our Spinner control with list of items by using an ArrayAdapter in our Kotlin file. Here, we update the name of the application using the string tag. We also create the list of the items which will be used in the dropdown menu. First, we declare a variable languages to access the strings items from the strings. If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below. Writing code in comment? Please use ide. Dynamic RatingBar in Kotlin. First we create a new project by following the below steps:. Check out this Author's contributed articles.

Load Comments. AppCompatActivity import android. Bundle import android. View import android.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.

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Android Spinner/Drop Down Menu Example Using Kotlin

When user selects something, I save it to SharedPreferences. How do I set the value back when the app is opened next time? I have only the value saved, not its position in spinner's list.

If I just do spinner. Or is this wrong approach? Well you need to post the adapter code as well but here I am giving a sample how I will do in adapter. Learn more. Asked 1 year, 11 months ago. Active 1 year, 11 months ago. Viewed 4k times. Destabilizator Destabilizator 1 1 silver badge 13 13 bronze badges. Can you not save the position instead? Then I'm in reversed trouble, as I need to show the value in several places I suppose I could use the resource array, hmm Active Oldest Votes.

Aha, I was wrongly trying to get adapter from the spinner, but the correct way is to get it from the resource Sign up or log in Sign up using Google.

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Android Spinner with Example in Kotlin

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