Datepicker/timerpicker/calendar/datepickerdialog/timepickerdialog

First, let's talk about calendar. calendar is not something of Android, but something in Java, a very powerful class about time operations in Java. I will not go into details here. There are too many methods and skills to use. Here we will focus on the controls in Android.

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Datepicker: Date selector.

Code Application Example:

 

 Package cn.com. chenzheng_java; </P> <p> Import android. app. activity; <br/> Import android. OS. bundle; <br/> Import android. widget. datepicker; <br/> Import android. widget. toast; <br/> Import android. widget. datepicker. ondatechangedlistener; </P> <p> public class datepickeractivity extends activity {</P> <p> @ override <br/> protected void oncreate (bundle savedinstancestate) {<br/> super. oncreate (savedinstancestate ); <Br/> setcontentview (R. layout. datepicker); <br/> datepicker = (datepicker) This. findviewbyid (R. id. datepicker1); <br/>/* initialization time, INIT (INT year, int monthofyear, int dayofmonth, ondatechangedlistener) <br/> * year indicates the year <br/> * monthofyear indicates the month. Note that the month starts from 0. For example, if we specify March, we need to pass in 2 <br/> * the day of the month in dayofmonth <br/> * ondatechangedlistener. After we modify the time, listener <br/> **/<br/> datepicker. init (2011, 3, 11, new datepicker. ondatechangedlistener () {</P> <p>/** <br/> * when the time is modified, method of execution <br/> */<br/> @ override <br/> Public void ondatechanged (datepicker view, int year, int monthofyear, <br/> int dayofmonth) {<br/> toast. maketext (datepickeractivity. this, "year =" + year + "monthofyear =" + monthofyear, toast. length_long ). show (); <br/>}< br/>}); </P> <p >}< br/>

Pattern:

Here we can see that we have entered the current window, and the date Selection control is displayed. In many cases, we do not want to select a date. We hope that, you can click a button or image to bring up a dialog box with our date selector. At this time, we need to use another control, datepickerdialog. Datepickerdialog is a datepicker loaded in the dialog box. I will not talk about it here. The usage of the two is basically the same.

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Timepicker: Time Selector

Sample Code:

Package cn.com. chenzheng_java; </P> <p> Import android. app. activity; <br/> Import android. OS. bundle; <br/> Import android. view. view; <br/> Import android. widget. timepicker; <br/> Import android. widget. toast; </P> <p> public class timepickeractivity extends activity {</P> <p> @ override <br/> protected void oncreate (bundle savedinstancestate) {<br/> // todo auto-generated method stub <br/> super. oncreate (savedinstancestate); <br/> setcontentview (R. layout. timepicker); <br/> timepicker = (timepicker) findviewbyid (R. id. timepicker1); <br/> timepicker. setis24hourview (true); <br/> timepicker. setcurrenthour (12); <br/> timepicker. setcurrentminute (23); <br/> // timepicker. setvisibility (view. visible); </P> <p> timepicker. setontimechangedlistener (New timepicker. ontimechangedlistener () {</P> <p> @ override <br/> Public void ontimechanged (timepicker view, int hourofday, int minute) {</P> <p> toast. maketext (timepickeractivity. this, "Change Time To hour:" + hourofday + "minute:" + minute, toast. length_long ). show (); <br/>}< br/>}); <br/>}</P> <p>}

Layout file example:

<? XML version = "1.0" encoding = "UTF-8"?> <Br/> <linearlayout <br/> xmlns: Android = "http://schemas.android.com/apk/res/android" <br/> Android: layout_width = "match_parent" <br/> Android: layout_height = "match_parent"> <br/> <timepicker Android: Id = "@ + ID/timepicker1" Android: layout_width = "wrap_content" Android: layout_height = "wrap_content"> </timepicker> <br/> </linearlayout> <br/>