Android uses DatePicker and timepicker to display the current date and time
Last Update:2016-04-20
Source: Internet
Author: User
<span id="Label3"></p><p><p>Course Content<br>1. Introduction of two DatePicker and timepicker to implement dynamic input date and event functions<br>2. Introduction of Datepickerdialog and Timepickerdialog in the coming year dialog box for dynamically entering dates and events<br>3. Two sets of listeners for detection date and time changes are included:<br>Ondatechangedlistener and Ontimechangedlistener<br>Ondatesetlistener and Ontimesetlistener<br>When the user changes the year, month, and day in the datepicker, the Ondatechange () event of the Ondatechangedlistener listener is started<br>When the user changes the time and tick in the timepicker, the Ontimechangedlistener Listener's ontimechanged event will be started<br>When the user changes the year, month, and day in the datepickerdialog, the Ondateset () event of the Ondatesetlistener listener is started<br>When the user changes the time and tick in the timepickerdialog, the Ontimesetlistener listener's ontimeset () event will be started</p></p><p><p>Requirements function<br>The current date and event are displayed by default in the title bar, and the listener gets the result of the user's choice of date or event and displays the date or time of the change on the title bar<br>Set the caption by Settitle ().</p></p><p><p>DatePicker real-time change year, month, day:</p></p><pre><pre> DatePicker =<span style="color: #000000;"> (datePicker) findviewbyid (r.id.datepicker1); </span> <span style="color: #0000ff;">New</span> <span style="color: #000000;">ondatechangedlistener () { @Override </span>public<span style="color: #0000ff;"></span><span style="color: #0000ff;">void</span><span style="color: #0000ff;">int</span><span style="color: #0000ff;">int</span> <span style="color: #000000;">monthofyear, </span> <span style="color: #0000ff;">int</span> <span style="color: #000000;">Dayofmonth) { settitle (string.format (</span>"%d-%02d-%02d", year, monthofyear+1<span style="color: #000000;">, dayofmonth)); } );</span></pre></pre><p><p>Timepicker Real-time update time, minutes:</p></p><pre><pre> Timepicker =<span style="color: #000000;"> (timepicker) Findviewbyid (r.id.timepicker1); Timepicker.setontimechangedlistener (</span><span style="color: #0000ff;">new</span> <span style="color: #000000;"> ontimechangedlistener () { @Override </span> <span style="color: #0000ff;"> Public</span><span style="color: #0000ff;">void</span><span style="color: #0000ff;">int</span><span style="color: #0000ff;">int</span> <span style="color: #000000;"> Minute) { settitle (string.format (</span>"%02d:%02d" <span style="color: #000000;">, hourofday, minute)); } );</span></pre></pre><p><p>Create a new Datepickerdialog to Show:</p></p><pre><pre> <span style="color: #0000ff;">New</span> Datepickerdialog (<span style="color: #0000ff;"></span>This<span style="color: #0000ff;">new</span> <span style="color: #000000;"> ondatesetlistener () { @Override </span>public<span style="color: #0000ff;"></span> <span style="color: #0000ff;"> void</span><span style="color: #0000ff;">int</span><span style="color: #0000ff;"></span><span style="color: #0000ff;"></span> int int<span style="color: #000000;"> Dayofmonth) { settitle (string.format (</span>"%d-%02d- %02d ", year, monthofyear+1<span style="color: #000000;">, dayofmonth)) , {} , year, month, day). show ();</span></pre></pre><p><p>Create a new Timepickerdialog to Show:</p></p><pre><pre> <span style="color: #0000ff;">New</span> Timepickerdialog (<span style="color: #0000ff;"></span>This<span style="color: #0000ff;">new</span> <span style="color: #000000;"> ontimesetlistener () { @Override </span>public<span style="color: #0000ff;"></span> <span style="color: #0000ff;"> void</span><span style="color: #0000ff;">int</span><span style="color: #0000ff;">int</span> <span style="color: #000000;"> Minute) { settitle (string.format (</span>"%02d:%02d"<span style="color: #000000;">, hourofday, minute)); } </span> <span style="color: #0000ff;">true</span>). Show ();</pre></pre><pre><span style="color: #0000ff;"><span style="color: #0000ff;"></span> package</span><span style="color: #000000;"><span style="color: #000000;">com.example.datepickertimepicker;</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">Import</span></span><span style="color: #000000;"><span style="color: #000000;">java.util.Calendar;</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">Import</span></span><span style="color: #000000;"><span style="color: #000000;">android.app.DatePickerDialog;</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">Import</span></span><span style="color: #000000;"><span style="color: #000000;">android.app.DatePickerDialog.OnDateSetListener;</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">Import</span></span><span style="color: #000000;"><span style="color: #000000;">android.app.TimePickerDialog;</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">Import</span></span><span style="color: #000000;"><span style="color: #000000;">android.app.TimePickerDialog.OnTimeSetListener;</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">Import</span></span><span style="color: #000000;"><span style="color: #000000;">android.os.Bundle;</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">Import</span></span><span style="color: #000000;"><span style="color: #000000;">android.support.v7.app.ActionBarActivity;</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">Import</span></span><span style="color: #000000;"><span style="color: #000000;">android.widget.DatePicker;</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">Import</span></span><span style="color: #000000;"><span style="color: #000000;">android.widget.DatePicker.OnDateChangedListener;</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">Import</span></span><span style="color: #000000;"><span style="color: #000000;">android.widget.TimePicker;</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">Import</span></span><span style="color: #000000;"><span style="color: #000000;">android.widget.TimePicker.OnTimeChangedListener;</span></span><span style="color: #0000ff;"><span style="color: #0000ff;"></span> public</span> <span style="color: #0000ff;"><span style="color: #0000ff;">class</span></span>Mainactivity<span style="color: #0000ff;"><span style="color: #0000ff;">extends</span></span><span style="color: #000000;"><span style="color: #000000;">actionbaractivity {</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">Private</span></span><span style="color: #000000;"><span style="color: #000000;">DatePicker DatePicker; </span></span><span style="color: #0000ff;"><span style="color: #0000ff;">Private</span></span><span style="color: #000000;"><span style="color: #000000;">Timepicker timepicker; </span></span><span style="color: #0000ff;"><span style="color: #0000ff;">Private</span></span><span style="color: #000000;"><span style="color: #000000;">Calendar calendar; </span></span><span style="color: #0000ff;"><span style="color: #0000ff;">Private</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span><span style="color: #000000;">year <span style="color: #000000;">; </span></span><span style="color: #0000ff;"><span style="color: #0000ff;">Private</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span><span style="color: #000000;"><span style="color: #000000;">month; </span></span><span style="color: #0000ff;"><span style="color: #0000ff;">Private</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span><span style="color: #000000;">day <span style="color: #000000;">; </span></span><span style="color: #0000ff;"><span style="color: #0000ff;">Private</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span><span style="color: #000000;"><span style="color: #000000;">hour; </span></span><span style="color: #0000ff;"><span style="color: #0000ff;">Private</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span><span style="color: #000000;"><span style="color: #000000;">minute; @Override</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">protected</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">void</span></span><span style="color: #000000;"><span style="color: #000000;">onCreate (Bundle Savedinstancestate) {</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">Super</span></span><span style="color: #000000;"><span style="color: #000000;">. OnCreate (savedinstancestate); Setcontentview (r.layout.activity_main); Calendar</span></span>=<span style="color: #000000;"><span style="color: #000000;">calendar.getinstance (); </span>year</span>=<span style="color: #000000;"><span style="color: #000000;">Calendar.get (calendar.year); Month</span></span>=<span style="color: #000000;"><span style="color: #000000;">Calendar.get (calendar.month); </span>day</span>=<span style="color: #000000;"><span style="color: #000000;">Calendar.get (calendar.day_of_month); Hour</span></span>=<span style="color: #000000;"><span style="color: #000000;">Calendar.get (calendar.hour_of_day); Minute</span></span>=<span style="color: #000000;"><span style="color: #000000;">Calendar.get (calendar.minute); Settitle (string.format (</span></span>"%d-%02d-%02d%02d:%02d", year, month+1<span style="color: #000000;"><span style="color: #000000;">, day, hour, minute)); DatePicker</span></span>=<span style="color: #000000;"><span style="color: #000000;">(DatePicker) Findviewbyid (r.id.datepicker1); Datepicker.init (year, month, day,</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">New</span></span><span style="color: #000000;"><span style="color: #000000;">Ondatechangedlistener () {@Override</span></span><span style="color: #0000ff;"><span style="color: #0000ff;"></span> public</span> <span style="color: #0000ff;"><span style="color: #0000ff;">void</span></span>Ondatechanged (DatePicker view,<span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span>Year<span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span><span style="color: #000000;"><span style="color: #000000;">monthofyear,</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span><span style="color: #000000;"><span style="color: #000000;">Dayofmonth) {settitle (string.format (</span></span>"%d-%02d-%02d", year, monthofyear+1<span style="color: #000000;"><span style="color: #000000;">, dayofmonth)); } }); Timepicker</span></span>=<span style="color: #000000;"><span style="color: #000000;">(timepicker) Findviewbyid (r.id.timepicker1); Timepicker.setontimechangedlistener (</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">New</span></span><span style="color: #000000;"><span style="color: #000000;">Ontimechangedlistener () {@Override</span></span><span style="color: #0000ff;"><span style="color: #0000ff;"></span> public</span> <span style="color: #0000ff;"><span style="color: #0000ff;">void</span></span>Ontimechanged (timepicker view,<span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span>hourofday,<span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span><span style="color: #000000;"><span style="color: #000000;">Minute) {settitle (string.format (</span></span>"%02d:%02d"<span style="color: #000000;"><span style="color: #000000;">, hourofday, minute)); } }); </span></span><span style="color: #0000ff;"><span style="color: #0000ff;">New</span></span>Datepickerdialog (<span style="color: #0000ff;"><span style="color: #0000ff;"></span> this</span>,<span style="color: #0000ff;"><span style="color: #0000ff;">New</span></span><span style="color: #000000;"><span style="color: #000000;">Ondatesetlistener () {@Override</span></span><span style="color: #0000ff;"><span style="color: #0000ff;"></span> public</span> <span style="color: #0000ff;"><span style="color: #0000ff;">void</span></span>Ondateset (DatePicker view,<span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span>Year<span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span>monthofyear,<span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span><span style="color: #000000;"><span style="color: #000000;">Dayofmonth) {settitle (string.format (</span></span>"%d-%02d-%02d", year, monthofyear+1<span style="color: #000000;"><span style="color: #000000;">, dayofmonth)); }}, year, month, day). show (); </span></span><span style="color: #0000ff;"><span style="color: #0000ff;">New</span></span>Timepickerdialog (<span style="color: #0000ff;"><span style="color: #0000ff;"></span> this</span>,<span style="color: #0000ff;"><span style="color: #0000ff;">New</span></span><span style="color: #000000;"><span style="color: #000000;">Ontimesetlistener () {@Override</span></span><span style="color: #0000ff;"><span style="color: #0000ff;"></span> public</span> <span style="color: #0000ff;"><span style="color: #0000ff;">void</span></span>Ontimeset (timepicker view,<span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span>hourofday,<span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span><span style="color: #000000;"><span style="color: #000000;">Minute) {settitle (string.format (</span></span>"%02d:%02d"<span style="color: #000000;"><span style="color: #000000;">, hourofday, minute)); }}, hour, minute</span> ,</span><span style="color: #0000ff;"><span style="color: #0000ff;">true</span></span><span style="color: #000000;"><span style="color: #000000;">). Show (); }}</span></span></pre><span class="cnblogs_code_collapse"><span class="cnblogs_code_collapse">Mainactivity.java</span></span><pre><span style="color: #0000ff;"><span style="color: #0000ff;"><</span></span><span style="color: #800000;"><span style="color: #800000;">LinearLayout</span></span><span style="color: #ff0000;"><span style="color: #ff0000;">xmlns:android</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">= "http://schemas.android.com/apk/res/android"</span></span><span style="color: #ff0000;"><span style="color: #ff0000;">Xmlns:tools</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">= "http://schemas.android.com/tools"</span></span><span style="color: #ff0000;"><span style="color: #ff0000;">Android:layout_width</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">= "match_parent"</span></span><span style="color: #ff0000;"><span style="color: #ff0000;">Android:layout_height</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">= "match_parent"</span></span><span style="color: #ff0000;"><span style="color: #ff0000;">android:orientation</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">= "vertical"</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">></span></span> <span style="color: #0000ff;"><span style="color: #0000ff;"><</span></span><span style="color: #800000;"><span style="color: #800000;">DatePicker</span></span><span style="color: #ff0000;"><span style="color: #ff0000;">Android:id</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">= "@+id/datepicker1"</span></span><span style="color: #ff0000;"><span style="color: #ff0000;">Android:layout_width</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">= "wrap_content"</span></span><span style="color: #ff0000;"><span style="color: #ff0000;">Android:layout_height</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">= "wrap_content"</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">/></span></span> <span style="color: #0000ff;"><span style="color: #0000ff;"><</span></span><span style="color: #800000;"><span style="color: #800000;">Timepicker</span></span><span style="color: #ff0000;"><span style="color: #ff0000;">Android:id</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">= "@+id/timepicker1"</span></span><span style="color: #ff0000;"><span style="color: #ff0000;">Android:layout_width</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">= "wrap_content"</span></span><span style="color: #ff0000;"><span style="color: #ff0000;">Android:layout_height</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">= "wrap_content"</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">/></span></span><span style="color: #0000ff;"><span style="color: #0000ff;"></</span></span><span style="color: #800000;"><span style="color: #800000;">LinearLayout</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">></span></span></pre><span class="cnblogs_code_collapse"><span class="cnblogs_code_collapse">Activity_main.xml</span></span><p><p>Precautions:<br>The 1.DatePicker object takes the Init () method to specify the events for the DatePicker initial year, month, day, and Ondatechangedlistener () Whereas the Timepicker object is the action to be taken by the Event-altering program directly with the Setontimechangedlistener () Event.<br>The biggest difference between 2.DatePickerDialog and Timepickerdialog and the previous two types of objects is that DatePicker and Timepicker are displayed directly on the screen, The Datepickerdialog and Timepickerdialog objects are displayed in a popup dialog manner.</p></p><p><p>Effect:</p></p><p><p></p></p><p><p></p></p><p><p>Android uses DatePicker and timepicker to display the current date and time</p></p></span>
