Functions and usage of Date and Time selector (DatePicker and TimePicker) in Android Development

Functions and usage of Date and Time selector (DatePicker and TimePicker) in Android Development

Functions and usage of Date and Time Picker (DatePicker and TimePicker)

DatePicker and TimePicker are two common controls derived from FrameLayout. DatePicker is used to select a date and TimePicker is used to select a time.

DatePicker and TimePicker provide methods based on FrameLayout to obtain the date and time selected by the current user; developers can listen to DatePicker by adding OnDateChangedListener and OnTimeChangedListener for TimePicker to obtain the date and time selected by the user.

DatePicker (date selector)Structure:

java.lang.Object   ? android.view.View     ? android.view.ViewGroup       ? android.widget.FrameLayout         ? android.widget.DatePicker
Overview:
A calendar Layout View that selects year, month, and day. For the dialog box view, see DatePickerDialog.
Public method: 

 
 

  
  
 
   
 
    
Public Methods
 
   
 
   
 
    
Int
 
    
GetDayOfMonth ()
Obtain the number of days selected
 
   
 
   
 
    
Int
 
    
GetMonth ()
Obtain the selected month
 
   
 
   
 
    
Int
 
    
GetYear ()
Obtain the selected year
 
   
 
   
 
    
Void
 
    
Init (int year, int monthOfYear, int dayOfMonth, DatePicker. OnDateChangedListener onDateChangedListener)
Initialize year, month, and day
 
   
 
   
 
    
Void
 
    
SetEnabled (boolean enabled)
Enable View
 
   
 
   
 
    
Void
 
    
UpdateDate (int year, int monthOfYear, int dayOfMonth)
Update date
 
   
 
  
 
 
DXML attributes supported by atePicker:
 
 

  
  
 
   
 
    
XML attributes
 
    
Description
 
   
 
   
 
    
Android: calendarViewShown
 
    
Sets whether the ClendarView component is displayed for the date selector.
 
   
 
   
 
    
Android: endYear
 
    
Set the last year allowed by the date Selector
 
   
 
   
 
    
Android: startYear
 
    
Set the Year 11 date that can be selected by the date Selector
 
   
 
   
 
    
Android: maxDate
 
    
Set the maximum date allowed by the date selector. Specify the maximum date in mm/dd/yyyy format
 
   
 
   
 
    
Android: minDate
 
    
Set the minimum date allowed by the date selector. Specify the minimum date in mm/dd/yyyy format
 
   
 
   
 
    
Android: spinnersShown
 
    
Sets whether the date selector displays the Spinner date Selection Component.
 
   
 
  
 
 
 
TimePicker (Time selector)Structure:
ava.lang.Object   ? android.view.View     ? android.view.ViewGroup       ? android.widget.FrameLayout         ? android.widget.TimePicker
Overview:
This is used to select a view of the time of a day. The 24-hour and morning/afternoon modes are supported. You can use a vertical scroll bar to control the hour, minute, and morning/afternoon (if available. Enter the hour on the keyboard. You can enter two numbers for two hours. For example, if you enter '1' and '2' within a certain period of time, 12 points is selected. A single number can be displayed in minutes. In AM/PM mode, you can enter 'A', 'a ", 'P', or 'P' to select. For the dialog box view, see TimePickerDialog.
Public method:
  
  

   
   
 
    
 
     
Public Methods
 
     
 
 
    
 
    
 
     
Int
 
     
GetBaseline ()
Returns the offset from the text baseline of a window to its top boundary. If this part does not support baseline alignment,
This method returns-1 /.
 
    
 
    
 
     
Integer
 
     
GetCurrentHour ()
Obtain the hour of the current time. Return value current hour (0-23)
 
    
 
    
 
     
Integer
 
     
GetCurrentMinute ()
Obtain the minute of the current time
 
    
 
    
 
     
Boolean
 
     
Is24HourView ()
Checks whether the current system settings are in the 24-hour format. True is returned in the 24-hour format. Otherwise, false is returned.
 
    
 
    
 
     
Void
 
     
SetCurrentHour (Integer currentHour)
Set current hour
 
    
 
    
 
     
Void
 
     
SetCurrentMinute (Integer currentMinute)
Set the current minute (0-59)
 
    
 
    
 
     
Void
 
     
SetEnabled (boolean enabled)
Set the available view status. The description of available view states is changed in the subclass.
 
    
 
    
 
     
Void
 
     
SetIs24HourView (Boolean is24HourView)
Set to 24 hours or morning/afternoon
 
    
 
    
 
     
Void
 
     
SetOnTimeChangedListener (TimePicker. OnTimeChangedListener onTimeChangedListener)
Set the time adjustment Event Callback Function.
 
    
 
   
  
  
 
Select the date and time for the application instance: Run: program code:
Package com. jph. choosedae; import java. util. calendar; import android. app. activity; import android. OS. bundle; import android. widget. datePicker; import android. widget. datePicker. onDateChangedListener; import android. widget. editText; import android. widget. timePicker; import android. widget. timePicker. onTimeChangedListener; import android. widget. toast;/*** Description :*
Select date and time *
This instance uses DatePicker (Time selector) and *
TimePicker (date selector) to provide users with a date and time *
To obtain the selected date, the program registers OnDateChangedListener for DatePicker *
Listener. To obtain the selected time program, register OnTimeChangedListener for TimePicker *
Listener * @ author jph * Date: 2014.20.57 */public class ChooseDate extends Activity {// defines five variables for recording the current time: private int year; private int month; private int day; private int hour; private int minute; @ Overridepublic void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); setContentView (R. layout. main); DatePicker datePicker = (DatePicker) findViewById (R. id. datePicker); TimePicker timePicker = (TimePicker) findViewById (R. id. timePicker); // obtain the current year, month, day, hour, and minute Calendar c = Calendar. getInstance (); year = c. get (Calendar. YEAR); month = c. get (Calendar. MONTH); day = c. get (Calendar. DAY_OF_MONTH); hour = c. get (Calendar. HOUR); minute = c. get (Calendar. MINUTE); // initialize the DatePicker component and specify the listener datePicker during initialization. init (year, month, day, new OnDateChangedListener () {@ Overridepublic void onDateChanged (DatePicker arg0, int year, int month, int day) {ChooseDate. this. year = year; ChooseDate. this. month = month; ChooseDate. this. day = day; // display the current date, time showDate (year, month, day, hour, minute); Toast. makeText (ChooseDate. this, "the date you selected:" + year + "year" + month + "month" + day + "day", Toast. LENGTH_SHORT ). show () ;}}); // specify the listener TimePicker for timePicker. setOnTimeChangedListener (new OnTimeChangedListener () {@ Overridepublic void onTimeChanged (TimePicker view, int hourOfDay, int minute) {ChooseDate. this. hour = hourOfDay; ChooseDate. this. minute = minute; // display the current date, time showDate (year, month, day, hour, minute); Toast. makeText (ChooseDate. this, "the time you selected:" + hourOfDay + "Hour" + minute + "minute", Toast. LENGTH_SHORT ). show (); //});} // defines the private void showDate (int year, int month, int day, int hour, int minute) {EditText show = (EditText) findViewById (R. id. show); show. setText ("the date and time you selected are:" + year + "year" + (month + 1) + "month" + day + "day" + hour + "hour" + minute + "minute ");}}

Xml layout file: