android studio spinner saving value when going back

You to create an ArrayAdapter from the string array. R.anets_array, android.R.layout.simple_spinner_item) ĪtDropDownViewResource(android.R.layout.simple_spinner_dropdown_item) Spinner spinner = (Spinner) findViewById(R.id.spinner) ĪrrayAdapter adapter = ArrayAdapter.createFromResource(this, Specify the layout to use when the list of choices appearsĪtDropDownViewResource(android.R.layout.simple_spinner_dropdown_item) Create an ArrayAdapter using the string array and a default spinner layout Val spinner: Spinner = findViewById(R.id.spinner) With an array such as this one, you can use the following code in your Activity or Fragment to supply the spinner with the array using Them with a string array defined in a string The choices you provide for the spinner can come from any source, but must be provided throughĪn SpinnerAdapter, such as an ArrayAdapter if theĬhoices are available in an array or a CursorAdapter if the choices areįor instance, if the available choices for your spinner are pre-determined, you can provide To populate the spinner with a list of choices, you then need to specify a SpinnerAdapter in your Activity or Fragment Should usually do so in your XML layout with a element.

You can add a spinner to your layout with the Spinner object. Touching the spinner displays a dropdown menu with all otherĪvailable values, from which the user can select a new one. Import 7.app.Spinners provide a quick way to select one value from a set. In the MainActivity.java file, we will define global variables as follows: package Additionally, we will also get to see a buttonClickListener that is used to define the action to be performed when a button is clicked in the app.īelow is th design that we will be working on. In our example, we will take input from the user through EditText view and will display it in the TextView. Here in this tutorial, we are going to focus and code for the backend part. In our previous tutorials, we have seen how different types of layout are useful for for GUI designing which is the frontend part. Whenever we click on any button or submit any form, the backend code decides what action to perform next or what to do with the data received from user etc. Backend part refers to the logic behind the functioning of your app. how your app will look and appear to the other users. Frontend refers to the visualization of the components i.e. Android SDK Manager & required PackagesĪny android app has two parts in it – frontend and backend.

Android studio spinner saving value when going back