Spinner

How to create Spinner in Android:

Spinner : A view that displays one child at a time and lets the user pick among them. The items in the Spinner come from the Adapter associated with this view. Android Spinner help user to select an item from desired items. It’s like drop down in html.

Here is a code needed to implement Spinner :

MainActivity.java

public class MainActivity extends Activity {

       Spinner spinner;

           

       @Override

       protected void onCreate(Bundle savedInstanceState) {

              super.onCreate(savedInstanceState);

              setContentView(R.layout.activity_main);

             

              spinner = (Spinner) findViewById(R.id.spinner1);

              final String[] arr = {"Java" ,"Android", "C", "C++"};

             

              ArrayAdapter<String> adapter = new ArrayAdapter<String>(MainActivity.this, android.R.layout.simple_list_item_1,arr);

              spinner.setAdapter(adapter);

             

              spinner.setOnItemSelectedListener(new OnItemSelectedListener() {

                     @Override

                     public void onItemSelected(AdapterView<?> arg0, View arg1,

                                  int arg2, long arg3) {

                           Toast.makeText(MainActivity.this, "You have chosen "+arr[arg2], Toast.LENGTH_SHORT).show();

                     }

                     @Override

                     public void onNothingSelected(AdapterView<?> arg0) {

                           // TODO Auto-generated method stub

                          

                     }

                    

              });          

       }

       @Override

       public boolean onCreateOptionsMenu(Menu menu) {

              // Inflate the menu; this adds items to the action bar if it is present.

              getMenuInflater().inflate(R.menu.main, menu);

              return true;

       }

}

activity_main.xml :

<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"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context=".MainActivity" >

    <Spinner

        android:id="@+id/spinner1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentTop="true"

        android:layout_centerHorizontal="true"

        android:layout_marginTop="28dp" />

</RelativeLayout>

  





















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