#ANDROID STUDIO SPINNER SIZE HOW TO#
#ANDROID STUDIO SPINNER SIZE ANDROID#
#ANDROID STUDIO SPINNER SIZE CODE#
#ANDROID STUDIO SPINNER SIZE PROFESSIONAL#

Inside the onItemSelected() method of classSpinner, you have to get the selected item from the dropdown list and based on that value, you have to assign entries i.e. Spinner classSpinner, void onCreate(Bundle savedInstanceState) Changing Value of second Spinner based on first Spinner value MainActivity.java public class MainActivity extends AppCompatActivity We will start by creating instances of both the spinners and then, assign the setOnItemSelectedListener() on both the spinners.

#ANDROID STUDIO SPINNER SIZE CODE#

To handle the GUI events, we need to implement the code inside the MainActivity.java file. We will do this through Java code as the user will select from the first dropdown at run time i.e. Doing so will assign the values present in the items_class array to the classSpinner.Īs per the user's selection of the option from the first spinner, our second Spinner will appear along with options based on the first spinner's selection.

To add these entries to the spinner all we have to do is add a property in the main activity layout XML file.

In our dataset, string-array named items_class will be assigned to the classSpinner to display the class items in the dropdown list.

We have also defined our dataset for the Spinners.

We have defined the layout XML for the User interface.

#ANDROID STUDIO SPINNER SIZE ANDROID#

We have understood the design that we are creating in our Android App, which will have 1 TextView and 2 Spinners.In Android, we must put the data XML files like our strings.xml file in app → res → values → strings.xml.īy now, we are done with the following things: We can define a string array in XML like we have shown below in the strings.xml file. But for this example, we will try the other way i.e. One by declaring an array and defining the items in it. To add items to the Spinner, there are two possible ways to provide it with a set of options. Once you will create that, the error in this file will be resolved.Īs you can see, we have one TextView and two Spinner views inside the xml file along with a few properties specified. NOTE: If you are getting an error in this, that is because you have not yet created the below data XML file. If you want, copy paste the below XML to start with this example in your local machine. So let's start, here we have the layout XML file. When user selects an optin from the second spinner too, then we will create a Toast and display the chosen values on screen. The first Spinner( classSpinner) holds the list of classes(in school) to be selected by the user and based on that choice we will assign the values to the second Spinner( divSpinner). But you can try and change the value of isVisible to VISIBLE to see if it is there or not. Hence, in the image below, it looks like it's not there. The second spinner has the property isVisible equals to GONE, which means it exists in the layout but it will not be visible(or it will be hidden). So we need to customize the layout(shown in below image) where one Spinner is placed below the TextView and the other spinner is below the first spinner.Īs the options inside the second Spinner will depend on what we select in the first Spinner, hence initially the second spinner will be hidden and it will only appear when user has selected one option from the first spinner. The main layout of the application will contain our one TextView and two spinners as its child component views. In this tutorial, we are going to create an application that works with two Spinners, which are inder-dependent. So let's checkout an example and learn how we can implement it in our Android App. You have already studied about what Spinners are and how they work. Android SDK Manager & required Packages.tAdapter(new MyAdapter(MainActivity.this, R.layout. Setting a Custom Adapter to the Spinner Spinner mySpinner = (Spinner) findViewById(R.id.spinner1) Declaring and assigning a Custom Adapter.Spin = (Spinner) findViewById(R.id.spn1) Spinner spin 2) Within the onCreate method : 1) Declare the spinner Globally i.e outside the onCreate method Touching the spinner displays a drop-down menu with all other available values, from which the user can select a new one.Įxample : Displaying the list of days of the week and on selecting an item it will display that item in a Toast. In the default state, a spinner shows its currently selected value. Spinners provide a quick way to select one value from a set.

If you are not clear with the basic concepts of Android, you can pursue this Android online training to understand each & every nuance of the technology. The items in the Spinner come from the Adapterassociated. Spinners is one of the widgets in Android which allows the user to pick one item from a list of items.

#ANDROID STUDIO SPINNER SIZE HOW TO#

In this topic of “ How to Create Android Widgets” we will learn how to create a custom spinner in android.

#ANDROID STUDIO SPINNER SIZE PROFESSIONAL#

Become a Certified Professional Lets Take a spin on Custom Spinner in Android

Android studio spinner size