Android-time and date related components

 

 

I. Clock Components

 

1. AnalogClock component

 

Appearance: The widget displays a dial with minute and second hands rotating;

Attribute Introduction: This component can be used to set the dial image and display the image by the hour hand;

--Set dial: Android: dial, set the R. drawable resource image;

--Set the hour hand: Android: hand_hour, set the R. drawable resource image;

--Set the sub-needle: Android: hand_minute, set the R. drawable resource image;

 

2. DigitalClock component

 

Appearance: This component is a TextView component that displays the text of the current time;

Attribute: The android: text attribute cannot be set for this component. The setting is also invalid;

 

3. source code example

 

 

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Ii. Timer Chronometer

 

Format attribute: Android: format, which specifies the timer format;

Common Methods: The timer method is the focus. You can control the start and stop operations of the timer;

--Set Time: SetBase (long), set the start time;

--Set format: SetFormat (string): set the time display format;

--Start timing: Start (), start timing method;

--Stop timing: Stop (), stop timing method;

--Set listeners: SetOnChronometerTickListener (), sets a listener, and calls back this method when the timer timing changes;

 

Instance:

XML source code:

 

Activity Code:

 

 

Package shuliang. han. time_date_test; import android. app. activity; import android. OS. bundle; import android. OS. systemClock; import android. widget. chronometer; import android. widget. chronometer. onChronometerTickListener; import android. widget. compoundButton; import android. widget. compoundButton. onCheckedChangeListener; import android. widget. toast; import android. widget. toggleButton; public class ChronometerActivity extends Activity {@ Overrideprotected void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); setContentView (R. layout. chronometer); final Chronometer chronometer = (Chronometer) findViewById (R. id. chronometer); ToggleButton toggleButton = (ToggleButton) findViewById (R. id. toggle); toggleButton. listener (new OnCheckedChangeListener () {@ Overridepublic void onCheckedChanged (CompoundButton buttonView, boolean isChecked) {if (isChecked) {// click stop timing from the display, checked false-> true stop timing, display start time chronometer. stop ();} else {// display start timer click, checked true-> false start timer, show stop timer chronometer. start (); chronometer. setBase (SystemClock. elapsedRealtime () ;}}); // sets a listener. When the time exceeds 5 seconds, the Toast information is chronometer. setOnChronometerTickListener (new OnChronometerTickListener () {@ Overridepublic void onChronometerTick (Chronometer chronometer) {if (SystemClock. elapsedRealtime ()-chronometer. getBase ()> 5*1000) Toast. makeText (getApplicationContext (), 5 seconds, Toast. LENGTH_LONG ). show ();}});}}

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3. Calendar view CalendarView

 

Calendar View: The calendar view displays a 7 * N square, that is, calendar. You can set N. In the scroll view, you can select a date of another month or year, and set a date to change the listener, listen to calendar selection events;

XML attributes of the calendar View:

--Set Style: Android: dateTextAppearance. Set the date text display style;

--Set the first day: Android: firstDayOfWeek. Set the day of the week to the first day of the week. The default value is Monday;

--Selected color: Android: focusedMonthDateColor, which specifies the color of the selected month and date;

--Max date: Android: maxDate, which specifies the maximum supported dates in mm/dd/yyyy format;

--Minimum date: Android: minDate: Specifies the supported minimum date in mm/dd/yyyy format;

--Select a vertical line: Android: selectedDateVerticalBar, which is used to set the Drawable (R.drawable.int) on both sides of the selected date;

--Week color: Android: selectedWeekBackground, which specifies the background color of the week where the selected date is located;

--Weekly display: Android: showWeekNumber, which indicates whether to display the number of weeks;

--Set weeks: Android: shownWeekCount, set the calendar component to display a total of weeks;

--Unselected color: Android: unfocusedMonthDateColor, set the date color of the unselected month;

--Week Style: Android: weekDayTextAppearance. Set the text style of the day of the week;

--Week color: Android: weekNumberColor, which specifies the color of the weekly ID;

--Weekly color Division: Android: weekSeparatorLineColor. Set the color of the weekly separator line;

 

Instance:

XML source code:

 

Activity source code:

 

 

Package shuliang. han. time_date_test; import android. app. activity; import android. OS. bundle; import android. widget. calendarView; import android. widget. calendarView. onDateChangeListener; import android. widget. toast; public class CalendarActivity extends Activity {private CalendarView calendarView; @ Overrideprotected void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); setContentView (R. layout. calendar); calendarView = (CalendarView) findViewById (R. id. calendarView); // sets the date change listener, which is activated when the date is changed. setOnDateChangeListener (new OnDateChangeListener () {@ Overridepublic void onSelectedDayChange (CalendarView view, int year, int month, int dayOfMonth) {Toast. makeText (getApplicationContext (), the selected date is: + year + month + dayOfMonth + day, Toast. LENGTH_LONG ). show ();}});}}

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Iv. Time Selector

 

TimePicker allows you to select a time. The component is more elegant. You can also set a time to change the listener. Once the time changes, the callback method is triggered;

 

Instance source code:

XML file:

 

Activity source code:

 

 

Package shuliang. han. time_date_test; import java. util. calendar; import android. app. activity; import android. OS. bundle; import android. widget. datePicker; import android. widget. timePicker; import android. widget. timePicker. onTimeChangedListener; import android. widget. toast; public class TimePickerActivity extends Activity {private TimePicker timePicker; @ Overrideprotected void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); setContentView (R. layout. time_picker); timePicker = (TimePicker) findViewById (R. id. time_picker); // print the current time getCurrentDateTime (); timePicker. setOnTimeChangedListener (new OnTimeChangedListener () {@ Overridepublic void onTimeChanged (TimePicker view, int hourOfDay, int minute) {Toast. makeText (getApplicationContext (), change time: + hourOfDay + hour + minute, Toast. LENGTH_LONG ). show () ;}}) ;}/ ** get the current date and time, and Toast the date and time */private void getCurrentDateTime () {// 1. obtain the current Calendar calendar Calendar = Calendar. getInstance (); // 2. method for obtaining time and date: calendar. get (Calendar. YEAR) Toast. makeText (getApplicationContext (), current time: + calendar. get (Calendar. YEAR) + YEAR + calendar. get (Calendar. MONTH) + MONTH + calendar. get (Calendar. DATE) + day + calendar. get (Calendar. HOUR) + HOUR + calendar. get (Calendar. MINUTE) + MINUTE + calendar. get (Calendar. SECOND) + seconds, Toast. LENGTH_LONG ). show ();}}

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5. Date selector DatePicker

 

Common date selector attributes:

--Show Calendar: Android: calendarViewShown. Whether to display the CalendarView calendar component;

--Select final: Android: endYear, whether the selector allows the last year;

--Max date: Android: maxDate, set the maximum date of the date selector, in the format of mm/dd/yyyy;

--Minimum date: Android: minDate: set the minimum date of the date selector, in the format of mm/dd/yyyy;

--Select component: Android: spinnerShown. Whether to display the Spinner component;

--Select the first year: Android: startYear, whether to allow the first year;

 

Instance:

XML source code:

 

 

 

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Source code: Http://download.csdn.net/detail/han1202012/6856737