1 Example of Spinner In Android Studio:Įxample 1: Below is the example in which we display a list of bank names in a spinner and whenever you select an item the value will be displayed using toast on Mobile screen.Here is code of ArrayAdapter in Android: ArrayAdapter(Context context, int resource, int textViewResourceId, T objects)įor more details read ArrayAdapter Tutorial as here we will use it in the below example to explain how Spinner is created in Android. Whenever you have a list of single items which is backed by an array, you can use Array Adapter. It holds the data and send the data to adapter view then view can takes the data from the adapter view and shows the data on different views like as list view, grid view, spinner. Below image of Spinner and Custom Spinner will make it more clear.Īn adapter is a bridge between UI component and data source that helps us to fill data in UI component. Here we have to implement custom adapter in our class. Suppose if we need to display a textview and a imageview in spinner item list then array adapter is not enough for that. We can also use Base Adapter and other custom adapters to display a spinner with more customize list. A spinner is mainly used to display only text field so we can implement Array Adapter for that. Important Note: To fill the data in a spinner we need to implement an adapter class. Important Note: Spinner is associated with Adapter view so to fill the data in spinner we need to use one of the Adapter class. Spinner is a sub class of AsbSpinner class. In Simple Words we can say that a spinner is like a combo box of AWT or swing where we can select a particular item from a list of items. It provides a easy way to select a value from a list of values.
In a default state, a spinner shows its currently selected value. Android spinners are nothing but the drop down-list seen in other programming languages. In Android, Spinner provides a quick way to select one value from a set of values. JSON file sample for this Kotlin Tutorial Īfter you implement this you will get the similar output as given in the screen shots.Spinner Tutorial With Examples In Android Studio
If you like to know more about the basic entity of JSON you can checkout Basic JSON entity here.
In first method we will create a JSON file and in second method we will read the file and and print in a text box. In this tutorial we will write two method. If you would like learn the java version of this tutorial check out the last tutorial “ How to Read and Write JSON data using GSON”. So here in this tutorial we are going to learn about how to read and write GSON data in Kotlin. Kotlin is now official language for Android development and it is well support in Android Studio.
0 kommentar(er)
