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Spinner Example

main.xml
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<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">


<Spinner
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/idSpinner"
    android:layout_centerHorizontal="true" />
</RelativeLayout>

MainActivity.java

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"Your package name is here"

import android.os.Bundle;

import android.widget.ArrayAdapter;

import android.widget.Spinner;

public class MainActivity extends Activity {

    Spinner spinner;

   @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

       spinner = (Spinner) findViewById(R.id.idSpinner);

       String [] countries={"India","Australia","America","Britain","Ireland"};

       ArrayAdapter adapter = new ArrayAdapter(this,android.R.layout.simple_spinner_dropdown_item,countries);

       spinner.setAdapter(adapter);

    }

}

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