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To run the app from android studio, open one of your project's activity files and click Run icon from the toolbar. I assume you have connected your actual Android Mobile device with your computer. Step 4 – Add the following code to androidManifest.xml Step 4 – Create a layout resource file and add the following code − Public class MainActivity extends AppCompatActivity ĪrrayAdapter arrayAdapter = new ArrayAdapter(this,ĪtDropDownViewResource(R.layout.spinner_list) Step 3 − Add the following code to src/MainActivity.java import 7.app.AppCompatActivity Now open an activitymain.xml file from \res\layout path and write the code like as shown below. In case if you are not aware of creating an app in android studio check this article Android Hello World App. Step 2 − Add the following code to res/layout/activity_main.xml. Create a new android application using android studio and give names as SpinnerExample. Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project. Check this android UI controls tutorial to know more about UI controls. This example demonstrates how do I change the spinner textSize and textColor in android. Android spinner is nothing but a drop down list just like the drop down list we see in websites.Android spinner is used to select one value from list of values.By default the spinner displays selected value.When the user touches the spinner it displays list of available values.