01.package com.myapp;
02.
03.import android.os.Bundle;
04.import android.app.Activity;
05.import android.view.Menu;
06.import android.view.View;
07.import android.widget.TextView;
08.import android.widget.Spinner;
09.import android.widget.Toast;
10.import android.widget.ArrayAdapter;
11.import android.widget.AdapterView;
12.import java.util.ArrayList;
13.import java.util.List;
14.
15.public class MainActivity extends Activity {
16.
17.
18. List<String> arrList = new ArrayList<String>();
19. TextView txtView1;
20.
21. @Override
22. public void onCreate(Bundle savedInstanceState) {
23. super.onCreate(savedInstanceState);
24. setContentView(R.layout.activity_main);
25.
26.
27.
28. Spinner spin = (Spinner) findViewById(R.id.spinner1);
29.
30. arrList.add("Mercury");
31. arrList.add("Venus");
32. arrList.add("Earth");
33. arrList.add("Mars");
34.
35. ArrayAdapter<String> arrAd = new ArrayAdapter<String>(MainActivity.this,
36. android.R.layout.simple_spinner_item,
37. arrList);
38.
39. spin.setAdapter(arrAd);
40.
41. spin.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
42.
43. public void onItemSelected(AdapterView<?> adapterView,
44. View view, int i, long l) {
45.
46. Toast.makeText(MainActivity.this,
47. String.valueOf("Your Selected : " + arrList.get(i)),
48. Toast.LENGTH_SHORT).show();
49.
50. }
51.
52. public void onNothingSelected(AdapterView<?> arg0) {
53.
54. Toast.makeText(MainActivity.this,
55. String.valueOf("Your Selected Empty"),
56. Toast.LENGTH_SHORT).show();
57. }
58.
59. });
60.
61.
62. }
63.
64.
65. @Override
66. public boolean onCreateOptionsMenu(Menu menu) {
67. getMenuInflater().inflate(R.menu.activity_main, menu);
68. return true;
69. }
70.
71.}
ช่วยกันสนับสนุนรักษาเว็บไซต์ความรู้แห่งนี้ไว้ด้วยการสนับสนุน 
