日期 时间选择器(DatePicker和TimePicker)实现用户选择

日期和时间

作者的设计TimePicker时，大小分布不合理，我调整宽度为match-parent高度为wrap-parent就可以了。

1. public class MainActivity extends Activity
2. {
3. // 定义5个记录当前时间的变量
4. private int year;
5. private int month;
6. private int day;
7. private int hour;
8. private int minute;
9. @Override
10. public void onCreate(Bundle savedInstanceState)
11. {
12. super.onCreate(savedInstanceState);
13. setContentView(R.layout.main);
14. DatePicker datePicker = (DatePicker)findViewById(R.id.datePicker);
15. TimePicker timePicker = (TimePicker)findViewById(R.id.timePicker);
16. // 获取当前的年、月、日、小时、分钟
17. Calendar c = Calendar.getInstance();
18. year = c.get(Calendar.YEAR);
19. month = c.get(Calendar.MONTH);
20. day = c.get(Calendar.DAY_OF_MONTH);
21. hour = c.get(Calendar.HOUR);
22. minute = c.get(Calendar.MINUTE);
23. // 初始化DatePicker组件，初始化时指定监听器
24. datePicker.init(year, month, day, new OnDateChangedListener()
25. {
26. @Override
27. public void onDateChanged(DatePicker arg0, int year
28. , int month, int day)
29. {
30. MainActivity.this.year = year;
31. MainActivity.this.month = month;
32. MainActivity.this.day = day;
33. // 显示当前日期、时间
34. showDate(year, month, day, hour, minute);
35. }
36. });
37. timePicker.setEnabled(true);
38. // 为TimePicker指定监听器
39. timePicker.setOnTimeChangedListener(new OnTimeChangedListener()
40. {
41. @Override
42. public void onTimeChanged(TimePicker view
43. , int hourOfDay, int minute)
44. {
45. MainActivity.this.hour = hourOfDay;
46. MainActivity.this.minute = minute;
47. // 显示当前日期、时间
48. showDate(year, month, day, hour, minute);
49. }
50. });
51. }
52. // 定义在EditText中显示当前日期、时间的方法
53. private void showDate(int year, int month
54. , int day, int hour, int minute)
55. {
56. EditText show = (EditText) findViewById(R.id.show);
57. show.setText("您的购买日期为：" + year + "年"
58. + (month + 1) + "月" + day + "日 " + hour + "时" + minute + "分");
59. }
60. }

XML文件

1. <?xml version="1.0" encoding="utf-8"?>
2. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
3. android:orientation="vertical"
4. android:layout_width="match_parent"
5. android:layout_height="match_parent">
6. <TextView
7. android:layout_width="match_parent"
8. android:layout_height="wrap_content"
9. android:text="选择购买本书的具体时间"/>
10. <!-- 定义一个DatePicker组件 -->
11. <DatePicker android:id="@+id/datePicker"
12. android:layout_width="wrap_content"
13. android:layout_height="200dp"
14. android:layout_gravity="center_horizontal"
15. android:startYear="2000"
16. android:endYear="2016"
17. android:calendarViewShown="true"
18. android:spinnersShown="true"/>
19. <!-- 定义一个TimePicker组件 -->
20. <TimePicker android:id="@+id/timePicker"
21. android:layout_width="match_parent"
22. android:layout_height="wrap_content"
23. android:layout_gravity="center_horizontal"/>
24. <!-- 显示用户输入日期、时间的控件 -->
25. <EditText android:id="@+id/show"
26. android:layout_width="match_parent"
27. android:layout_height="wrap_content"
28. android:editable="false"
29. android:cursorVisible="false"/>
30. </LinearLayout>

效果