關于日期選擇控件，之前項目中用到了好多次，不同的項目需求是不一樣的，比如說UI啊，時間選擇限制等等。這次寫的demo就從幾個方面來解決項目中可能出現的需求情況。 首先看效果： 
1.首先關于dialog的xml布局
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="wrap_content" android:background="#FFFFFFFF" android:orientation="vertical"> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center_vertical" android:orientation="horizontal" android:padding="12dp"> <TextView android:id="@+id/date_title" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:text="" android:textColor="#49ADE9" android:textSize="17dp"/> <ImageView android:id="@+id/date_cancle" android:layout_width="20dp" android:layout_height="20dp" android:background="@mrsshown="true" android:theme="@style/Theme.AppCompat.Light"></DatePicker> <TimePicker android:id="@+id/timepicker" android:layout_width="match_parent" android:layout_height="wrap_content" android:theme="@style/Theme.AppCompat.Light" android:timePickerMode="spinner" android:visibility="gone"/> </LinearLayout> <View android:layout_width="match_parent" android:layout_height="1dp" android:background="#f4f4f4"/> <TextView android:id="@+id/date_submit" android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center" android:paddingBottom="16dp" android:paddingTop="16dp" android:text="完成" android:textSize="17dp"/></LinearLayout> 注：1>.在DatePicker中有個屬性datePickerMode，這個是為了選擇顯示模式，比如：日歷模式，滾動模式。 2>.同樣在TimePicker中也有個屬性timePickerMode，是否是顯示日歷模式還是滾動模式2.Activity布局顯示：
<?xml version="1.0" encoding="utf-8"?><LinearLayout android:id="@+id/activity_main" xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" android:orientation="vertical" tools:context="com.example.li.datepickertimerdialog.MainActivity"> <Button android:id="@+id/btn_time" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="選擇時間" android:textSize="14dp" android:textColor="#000000"/> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal" android:layout_marginTop="10dp"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textColor="#ff0000" android:text="時間顯示："/> <TextView android:id="@+id/show_time" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textColor="#ff0000"/> </LinearLayout></LinearLayout>3.點擊彈出時間選擇控件
Button btnTime = (Button) findViewById(R.id.btn_time); final TextView showTime = (TextView)findViewById(R.id.show_time); btnTime.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { DateTimePickDialogUtil dateTimePicKDialog = new DateTimePickDialogUtil(MainActivity.this, null); dateTimePicKDialog.dateTimePicKDialog(showTime, 0, false); } }); 這里關于dateTimePicKDialog中幾個參數的介紹： ①.showTime是要顯示最終選擇的時間 ②.0表示大于當前時間0天，如果不需要限制時間選擇的話，我這里是傳了-9999，這塊代碼有些問題，沒來得及修改，但是不影響操作，望見諒 ③.boolean值表示是否要展示TimePicker,false表示不展示4.DateTimePickDialogUtil代碼 初始化：
public void init(DatePicker datePicker) { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); Calendar calendar = Calendar.getInstance(); if (day > 0) { calendar.setTime(new Date(System.currentTimeMillis() + (day * 60 * 60 * 1000 * 24))); dateTime = sdf.format(calendar.getTime()); } else { dateTime = sdf.format(calendar.getTime()); } if (!(null == initDateTime || "".equals(initDateTime))) { calendar = this.getCalendarByInintData(initDateTime); } else { initDateTime = calendar.get(Calendar.YEAR) + "-" + calendar.get(Calendar.MONTH) + "-" + calendar.get(Calendar.DAY_OF_MONTH) + "- "; } datePicker.init(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), new OnDateChangedListener() { @Override public void onDateChanged(DatePicker view, int year, int monthOfYear, int dayOfMonth) { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); if (day > 0) { Calendar mCalendar = Calendar.getInstance(); mCalendar.setTime(new Date(System.currentTimeMillis() + (day * 60 * 60 * 1000 * 24))); // 獲得日歷實例 Calendar calendar = Calendar.getInstance(); calendar.set(view.getYear(), view.getMonth(), view.getDayOfMonth()); if (System.currentTimeMillis() + (day * 60 * 60 * 1000 * 24) > calendar.getTimeInMillis()) { view.init(mCalendar.get(Calendar.YEAR), mCalendar.get(Calendar.MONTH), mCalendar.get(Calendar.DAY_OF_MONTH), this); dateTime = sdf.format(mCalendar.getTime()); dateTitle.setText(dateTime + getWeek(dateTime)); } else { // 獲得日歷實例 dateTime = sdf.format(calendar.getTime()); dateTitle.setText(dateTime + getWeek(dateTime)); } } else if (day == -9999) { // 獲得日歷實例 Calendar calendar = Calendar.getInstance(); calendar.set(view.getYear(), view.getMonth(), view.getDayOfMonth()); dateTime = sdf.format(calendar.getTime()); dateTitle.setText(dateTime + getWeek(dateTime)); } else { if (isDateAfter(view)) { Calendar mCalendar = Calendar.getInstance(); view.init(mCalendar.get(Calendar.YEAR), mCalendar.get(Calendar.MONTH), mCalendar.get(Calendar.DAY_OF_MONTH), this); dateTime = sdf.format(mCalendar.getTime()); dateTitle.setText(dateTime + getWeek(dateTime)); } else { // 獲得日歷實例 Calendar calendar = Calendar.getInstance(); calendar.set(view.getYear(), view.getMonth(), view.getDayOfMonth()); dateTime = sdf.format(calendar.getTime()); dateTitle.setText(dateTime + getWeek(dateTime)); } } } PRivate boolean isDateAfter(DatePicker tempView) { Calendar mCalendar = Calendar.getInstance(); Calendar tempCalendar = Calendar.getInstance(); tempCalendar.set(tempView.getYear(), tempView.getMonth(), tempView.getDayOfMonth(), 0, 0, 0); if (tempCalendar.after(mCalendar)) return false; else return true; } }); }彈出dialog：
/** * 彈出日期時間選擇框方法 * 當前時間的下一天 * * @param inputDate :為需要設置的日期時間文本編輯框 * @return */ public Dialog dateTimePicKDialog(final TextView inputDate, int day, final boolean isShowTime) { this.day = day; LinearLayout dateTimeLayout = (LinearLayout) activity .getLayoutInflater().inflate(R.layout.common_datetime, null); final Dialog dialog = new android.app.AlertDialog.Builder(activity).create(); dialog.setCanceledOnTouchOutside(false); dialog.setOnKeyListener(keylistener); dialog.setCancelable(false); dialog.show(); dialog.setContentView(dateTimeLayout); dateTitle = (TextView) dateTimeLayout.findViewById(R.id.date_title); TimePicker timePicker = (TimePicker) dateTimeLayout.findViewById(R.id.timepicker); if (isShowTime) { timePicker.setVisibility(View.VISIBLE); timePicker.setIs24HourView(true); } hours = timePicker.getCurrentHour(); minutes = timePicker.getCurrentMinute(); timePicker.setOnTimeChangedListener(new OnTimeChangedListener() { @Override public void onTimeChanged(TimePicker view, int hourOfDay, int minute) { hours = hourOfDay; minutes = minute; } }); dateTitle.setText(initDateTime); ImageView dateCancle = (ImageView) dateTimeLayout.findViewById(R.id.date_cancle); TextView dateSubmit = (TextView) dateTimeLayout.findViewById(R.id.date_submit); datePicker = (DatePicker) dateTimeLayout.findViewById(R.id.datepicker); dateSubmit.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd"); Long diff = null; try { Date d1 = df.parse(initDateTime); Date d2 = df.parse(dateTime); //前的時間 diff = d1.getTime() - d2.getTime(); //兩時間差 d = d1.getTime(); } catch (ParseException e) { e.printStackTrace(); } if (diff >= 0) { Toast.makeText(activity.getapplicationContext(), "請選擇大于現在的日期", Toast.LENGTH_SHORT).show(); } else { if (isShowTime) { if (minutes < 10) { inputDate.setText(dateTime + " " + hours + ":0" + minutes); } else { inputDate.setText(dateTime + " " + hours + ":" + minutes); } } else { inputDate.setText(dateTime); } if (cd != null) { cd.toShow(d); } } dialog.dismiss(); } }); dateCancle.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { dialog.dismiss(); } }); init(datePicker); dateTitle.setText(dateTime + getWeek(dateTime)); return dialog; }關于選擇周幾：
private String getWeek(String time) { String Week = " 周"; SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");//也可將此值當參數傳進來 Calendar c = Calendar.getInstance(); try { c.setTime(format.parse(time)); } catch (ParseException e) { e.printStackTrace(); } switch (c.get(Calendar.DAY_OF_WEEK)) { case 1: Week += "日"; break; case 2: Week += "一"; break; case 3: Week += "二"; break; case 4: Week += "三"; break; case 5: Week += "四"; break; case 6: Week += "五"; break; case 7: Week += "六"; break; default: break; } return Week; }由于有的項目中需要在年月日中的顯示中添加“日”，這個一直沒找到好的方法，以及對時間的顯示只顯示時，去掉分，這個也一直沒想到好的做法（除了自定義，有水平有限）。希望有大神了可以再此基礎上修改，可以發到我郵箱（1346765933@QQ.com）。 最后如果有寫的不好的請提出您寶貴的意見，謝謝！ demo在github的地址：https://github.com/CristianoLi/DatePickerTimerDialog
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