默認顯示當前時間：
time.xml
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<strong><?xmlversion="1.0"encoding="utf-8"?><LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical"> <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:gravity="center" android:text="日期和時間控件的使用DEMO"/> <LinearLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="horizontal"> <EditText android:id="@+id/showdate" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="1"/> <Button android:id="@+id/pickdate" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="選擇日期"/> </LinearLayout> <LinearLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="horizontal"> <EditText android:id="@+id/showtime" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="1"/> <Button android:id="@+id/picktime" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="選擇時間"/> </LinearLayout></LinearLayout></strong> |
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publicclass
TimeActivity extendsActivity
{ privateEditText
showDate = null; privateButton
pickDate = null; privateEditText
showTime = null; privateButton
pickTime = null; privatestatic
final
int
SHOW_DATAPICK = 0; privatestatic
final
int
DATE_DIALOG_ID = 1; privatestatic
final
int
SHOW_TIMEPICK = 2; privatestatic
final
int
TIME_DIALOG_ID = 3; privateint
mYear; privateint
mMonth; privateint
mDay; privateint
mHour; privateint
mMinute; /**
Called when the activity is first created. */ @Override publicvoid
onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.time); initializeViews(); finalCalendar
c = Calendar.getInstance(); mYear
= c.get(Calendar.YEAR); mMonth
= c.get(Calendar.MONTH); mDay
= c.get(Calendar.DAY_OF_MONTH); mHour
= c.get(Calendar.HOUR_OF_DAY); mMinute
= c.get(Calendar.MINUTE); setDateTime(); setTimeOfDay(); } /** *
初始化控件和UI視圖 */ privatevoid
initializeViews(){ showDate
= (EditText) findViewById(R.id.showdate); pickDate
= (Button) findViewById(R.id.pickdate); showTime
= (EditText)findViewById(R.id.showtime); pickTime
= (Button)findViewById(R.id.picktime); pickDate.setOnClickListener(newView.OnClickListener()
{ @Override publicvoid
onClick(View v) { Message
msg = newMessage(); if(pickDate.equals((Button)
v)) { msg.what
= TimeActivity.SHOW_DATAPICK; } TimeActivity.this.dateandtimeHandler.sendMessage(msg); } }); pickTime.setOnClickListener(newView.OnClickListener()
{ @Override publicvoid
onClick(View v) { Message
msg = newMessage(); if(pickTime.equals((Button)
v)) { msg.what
= TimeActivity.SHOW_TIMEPICK; } TimeActivity.this.dateandtimeHandler.sendMessage(msg); } }); } /** *
設置日期 */ privatevoid
setDateTime(){ finalCalendar
c = Calendar.getInstance(); mYear
= c.get(Calendar.YEAR); mMonth
= c.get(Calendar.MONTH); mDay
= c.get(Calendar.DAY_OF_MONTH); updateDateDisplay(); } /** *
更新日期顯示 */ privatevoid
updateDateDisplay(){ showDate.setText(newStringBuilder().append(mYear).append("-") .append((mMonth
+ 1)
< 10? "0"+
(mMonth + 1)
: (mMonth + 1)).append("-") .append((mDay
< 10)
? "0"+
mDay : mDay)); } /** *
日期控件的事件 */ privateDatePickerDialog.OnDateSetListener
mDateSetListener = newDatePickerDialog.OnDateSetListener()
{ publicvoid
onDateSet(DatePicker view, intyear, intmonthOfYear, intdayOfMonth)
{ mYear
= year; mMonth
= monthOfYear; mDay
= dayOfMonth; updateDateDisplay(); } }; /** *
設置時間 */ privatevoid
setTimeOfDay(){ finalCalendar
c = Calendar.getInstance(); mHour
= c.get(Calendar.HOUR_OF_DAY); mMinute
= c.get(Calendar.MINUTE); updateTimeDisplay(); } /** *
更新時間顯示 */ privatevoid
updateTimeDisplay(){ showTime.setText(newStringBuilder().append(mHour).append(":") .append((mMinute
< 10)
? "0"+
mMinute : mMinute)); } /** *
時間控件事件 */ privateTimePickerDialog.OnTimeSetListener
mTimeSetListener = newTimePickerDialog.OnTimeSetListener()
{ @Override publicvoid
onTimeSet(TimePicker view, inthourOfDay, intminute)
{ mHour
= hourOfDay; mMinute
= minute; updateTimeDisplay(); } }; @Override protectedDialog
onCreateDialog(intid)
{ switch(id)
{ caseDATE_DIALOG_ID: returnnew
DatePickerDialog(this,
mDateSetListener, mYear, mMonth, mDay); caseTIME_DIALOG_ID: returnnew
TimePickerDialog(this,
mTimeSetListener, mHour, mMinute, true); } returnnull; } @Override protectedvoid
onPrepareDialog(intid,
Dialog dialog) { switch(id)
{ caseDATE_DIALOG_ID: ((DatePickerDialog)
dialog).updateDate(mYear, mMonth, mDay); break; caseTIME_DIALOG_ID: ((TimePickerDialog)
dialog).updateTime(mHour, mMinute); break; } } /** *
處理日期和時間控件的Handler */ Handler
dateandtimeHandler = newHandler()
{ @Override publicvoid
handleMessage(Message msg) { switch(msg.what)
{ caseTimeActivity.SHOW_DATAPICK: showDialog(DATE_DIALOG_ID); break; caseTimeActivity.SHOW_TIMEPICK: showDialog(TIME_DIALOG_ID); break; } } }; |