Definition of Android CheckBox control and event monitoring

http://www.beijibear.com/index.php?aid=336

The definition of the Android CheckBox control and event monitoring, this example implements the CheckBox control definition and click event Monitoring and display the results, the effect is as follows:

The definition of the CheckBox control, Main.xml content is as follows:

2. <?xml version= "1.0" encoding= "Utf-8"?>
4. <linearlayout xmlns:android= "Http://schemas.android.com/apk/res/android"
6. android:orientation= "Vertical"
8. Android:layout_width= "Fill_parent"
10. android:layout_height= "Fill_parent"
12. >
14. <edittext
16. Android:id= "@+id/edittext1"
18. Android:layout_width= "Fill_parent"
20. android:layout_height= "Wrap_content"
22. android:text= "Please select"
24. />
26. <checkbox
28. Android:id= "@+id/beijing"
30. Android:layout_width= "Wrap_content"
32. android:layout_height= "Wrap_content"
34. android:text= "Beijing"
36. />
38. <checkbox
40. Android:id= "@+id/shanghai"
42. Android:layout_width= "Wrap_content"
44. android:layout_height= "Wrap_content"
46. android:text= "Shanghai"
48. />
50. <checkbox
52. Android:id= "@+id/shenzhen"
54. Android:layout_width= "Wrap_content"
56. android:layout_height= "Wrap_content"
58. android:text= "Shenzhen"
60. />
62. </LinearLayout>

Activity Checkboxtest.java content is as follows:

2. Package checkbox.pack;
6. Import android.app.Activity;
8. Import Android.os.Bundle;
10. Import Android.widget.CheckBox;
12. Import Android.widget.CompoundButton;
14. Import Android.widget.EditText;
18. public class Checkboxtest extends Activity {
22. Declaring a Control object
24. CheckBox Beijing=null;
26. CheckBox Shanghai=null;
28. CheckBox Shenzhen=null;
30. EditText Edittext1=null;
32. @Override
34. public void OnCreate (Bundle savedinstancestate) {
36. Super.oncreate (savedinstancestate);
38. Setcontentview (R.layout.main);
40. To get the object that represents the control through the control's ID
42. Beijing= (CheckBox) Findviewbyid (r.id.beijing);
44. Shanghai= (CheckBox) Findviewbyid (R.id.shanghai);
46. Shenzhen= (CheckBox) Findviewbyid (R.id.shenzhen);
48. edittext1= (EditText) Findviewbyid (R.ID.EDITTEXT1);
50. Set up event monitoring for a checkbox
52. Beijing.setoncheckedchangelistener (New Compoundbutton.oncheckedchangelistener () {
54. @Override
56. public void OnCheckedChanged (Compoundbutton buttonview,
58. Boolean isChecked) {
60. TODO auto-generated Method Stub
62. if (isChecked) {
64. Edittext1.settext (Buttonview.gettext () + "checked");
66. }else{
68. Edittext1.settext (Buttonview.gettext () + "uncheck");
70. }
72. }
74. });
76. Shanghai.setoncheckedchangelistener (New Compoundbutton.oncheckedchangelistener () {
78. @Override
80. public void OnCheckedChanged (Compoundbutton buttonview,
82. Boolean isChecked) {
84. TODO auto-generated Method Stub
86. if (isChecked) {
88. Edittext1.settext (Buttonview.gettext () + "checked");
90. }else{
92. Edittext1.settext (Buttonview.gettext () + "uncheck");
94. }
96. }
98. });
100. Shenzhen.setoncheckedchangelistener (New Compoundbutton.oncheckedchangelistener () {
102. @Override
104. public void OnCheckedChanged (Compoundbutton buttonview,
106. Boolean isChecked) {
108. TODO auto-generated Method Stub
110. if (isChecked) {
112. Edittext1.settext (Buttonview.gettext () + "checked");
114. }else{
116. Edittext1.settext (Buttonview.gettext () + "uncheck");
118. }
120. }
122. });
124. }
126. }

Definition of Android CheckBox control and event monitoring