安卓單項選擇技巧介紹

大家知道安卓單項選擇嗎?下面我們就給大家詳細介紹一下吧!

1. public class RadioActivity extends Activity {
2.  
3.     Context mContext = null;
4.     @Override
5.     protected void onCreate(Bundle savedInstanceState) {
6.         setContentView(R.layout.radioview);
7.         mContext = this;
8.         //單選組(只有在一個組中的按鈕可以單選)
9.         RadioGroup radioGroup = (RadioGroup)findViewById(R.id.radion0);
10.         
11.         //單選按鈕（第一組）
12.         final RadioButton radioButton0 = (RadioButton)findViewById(R.id.radionButton0);
13.         final RadioButton radioButton1 = (RadioButton)findViewById(R.id.radionButton1);
14.         final RadioButton radioButton2 = (RadioButton)findViewById(R.id.radionButton2);
15.         
16.         radioGroup.setOnCheckedChangeListener(new OnCheckedChangeListener() {
17.             
18.             @Override
19.             public void onCheckedChanged(RadioGroup arg0, int checkID) {
20.                 if(radioButton0.getId() == checkID) {
21.                     Toast.makeText(RadioActivity.this, "您選中了第一組" + radioButton0.getText(), Toast.LENGTH_LONG).show();
22.                 }else if(radioButton1.getId() == checkID) {
23.                     Toast.makeText(RadioActivity.this, "您選中了第一組" + radioButton1.getText(), Toast.LENGTH_LONG).show();
24.                 }else if(radioButton2.getId() == checkID) {
25.                     Toast.makeText(RadioActivity.this, "您選中了第一組" + radioButton2.getText(), Toast.LENGTH_LONG).show();
26.                 }
27.             }
28.         });
29.         
30.         RadioGroup radioGroup0 = (RadioGroup)findViewById(R.id.radion1);
31.         
32.         //單選按鈕(第二組)
33.         final RadioButton radioButton3 = (RadioButton)findViewById(R.id.radionButton3);
34.         final RadioButton radioButton4 = (RadioButton)findViewById(R.id.radionButton4);
35.         final RadioButton radioButton5 = (RadioButton)findViewById(R.id.radionButton5);
36.         
37.         radioGroup0.setOnCheckedChangeListener(new OnCheckedChangeListener() {
38.             
39.             @Override
40.             public void onCheckedChanged(RadioGroup arg0, int checkID) {
41.                 if(radioButton3.getId() == checkID) {
42.                     Toast.makeText(RadioActivity.this, "您選中了第二組" + radioButton3.getText(), Toast.LENGTH_LONG).show();
43.                 }else if(radioButton4.getId() == checkID) {
44.                     Toast.makeText(RadioActivity.this, "您選中了第二組" + radioButton4.getText(), Toast.LENGTH_LONG).show();
45.                 }else if(radioButton5.getId() == checkID) {
46.                     Toast.makeText(RadioActivity.this, "您選中了第二組" + radioButton5.getText(), Toast.LENGTH_LONG).show();
47.                 }
48.             }
49.         });
50.         super.onCreate(savedInstanceState);