將活動添加到此日曆中

Question

我正在開發一個程序。它有一個日曆。當用戶按下事件顯示的日期時。
然後，我希望應用程序在事件即將發生時向用戶發送通知。
我一起工作的日曆是從本網站calendar example

package com.examples;  

import java.text.ParseException; 
import java.text.SimpleDateFormat; 
import java.util.ArrayList; 
import java.util.Calendar; 
import java.util.Date; 
import java.util.GregorianCalendar; 
import java.util.HashMap; 
import java.util.List; 
import java.util.Locale; 

import android.app.Activity; 
import android.content.Context; 
import android.graphics.Color; 
import android.os.Bundle; 
import android.text.format.DateFormat; 
import android.util.Log; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.view.View.OnClickListener; 
import android.widget.BaseAdapter; 
import android.widget.Button; 
import android.widget.GridView; 
import android.widget.ImageView; 
import android.widget.TextView; 

public class SimpleCalendarViewActivity extends Activity implements OnClickListener 
    { 
     private static final String tag = "SimpleCalendarViewActivity"; 

     private ImageView calendarToJournalButton; 
    private Button selectedDayMonthYearButton; 
    private Button currentMonth; 
    private ImageView prevMonth; 
    private ImageView nextMonth; 
    private GridView calendarView; 
    private GridCellAdapter adapter; 
    private Calendar _calendar; 
    private int month, year; 
    private final DateFormat dateFormatter = new DateFormat(); 
    private static final String dateTemplate = "MMMM yyyy"; 

    /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(Bundle savedInstanceState) 
     { 
      super.onCreate(savedInstanceState); 
      setContentView(R.layout.simple_calendar_view); 

      _calendar = Calendar.getInstance(Locale.getDefault()); 
      month = _calendar.get(Calendar.MONTH) + 1; 
      year = _calendar.get(Calendar.YEAR); 
      Log.d(tag, "Calendar Instance:= " + "Month: " + month + " " + "Year: " + year); 

      selectedDayMonthYearButton = (Button) this.findViewById(R.id.selectedDayMonthYear); 
      selectedDayMonthYearButton.setText("Selected: "); 

      prevMonth = (ImageView) this.findViewById(R.id.prevMonth); 
      prevMonth.setOnClickListener(this); 

      currentMonth = (Button) this.findViewById(R.id.currentMonth); 
      currentMonth.setText(dateFormatter.format(dateTemplate, _calendar.getTime())); 

      nextMonth = (ImageView) this.findViewById(R.id.nextMonth); 
      nextMonth.setOnClickListener(this); 

      calendarView = (GridView) this.findViewById(R.id.calendar); 

      // Initialised 
      adapter = new GridCellAdapter(getApplicationContext(), R.id.calendar_day_gridcell, month, year); 
      adapter.notifyDataSetChanged(); 
      calendarView.setAdapter(adapter); 
     } 

    /** 
    * 
    * @param month 
    * @param year 
    */ 
    private void setGridCellAdapterToDate(int month, int year) 
     { 
      adapter = new GridCellAdapter(getApplicationContext(), R.id.calendar_day_gridcell, month, year); 
      _calendar.set(year, month - 1, _calendar.get(Calendar.DAY_OF_MONTH)); 
      currentMonth.setText(dateFormatter.format(dateTemplate, _calendar.getTime())); 
      adapter.notifyDataSetChanged(); 
      calendarView.setAdapter(adapter); 
     } 

    @Override 
    public void onClick(View v) 
     { 
      if (v == prevMonth) 
       { 
        if (month <= 1) 
         { 
          month = 11; 
          year--; 
         } 
        else 
         { 
          month--; 
         } 
        Log.d(tag, "Setting Prev Month in GridCellAdapter: " + "Month: " + month + " Year: " + year); 
        setGridCellAdapterToDate(month, year); 
       } 
      if (v == nextMonth) 
       { 
        if (month > 11) 
         { 
          month = 1; 
          year++; 
         } 
        else 
         { 
          month++; 
         } 
        Log.d(tag, "Setting Next Month in GridCellAdapter: " + "Month: " + month + " Year: " + year); 
        setGridCellAdapterToDate(month, year); 
       } 

     } 

    @Override 
    public void onDestroy() 
     { 
      Log.d(tag, "Destroying View ..."); 
      super.onDestroy(); 
     } 

    // /////////////////////////////////////////////////////////////////////////////////////// 
    // Inner Class 
    public class GridCellAdapter extends BaseAdapter implements OnClickListener 
     { 
      private static final String tag = "GridCellAdapter"; 
      private final Context _context; 

      private final List<String> list; 
      private static final int DAY_OFFSET = 1; 
      private final String[] weekdays = new String[]{"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"}; 
      private final String[] months = {"January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"}; 
      private final int[] daysOfMonth = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}; 
      private final int month, year; 
      private int daysInMonth, prevMonthDays; 
      private int currentDayOfMonth; 
      private int currentWeekDay; 
      private Button gridcell; 
      private TextView num_events_per_day; 
      private final HashMap eventsPerMonthMap; 
      private final SimpleDateFormat dateFormatter = new SimpleDateFormat("dd-MMM-yyyy"); 

      // Days in Current Month 
      public GridCellAdapter(Context context, int textViewResourceId, int month, int year) 
       { 
        super(); 
        this._context = context; 
        this.list = new ArrayList<String>(); 
        this.month = month; 
        this.year = year; 

        Log.d(tag, "==> Passed in Date FOR Month: " + month + " " + "Year: " + year); 
        Calendar calendar = Calendar.getInstance(); 
        setCurrentDayOfMonth(calendar.get(Calendar.DAY_OF_MONTH)); 
        setCurrentWeekDay(calendar.get(Calendar.DAY_OF_WEEK)); 
        Log.d(tag, "New Calendar:= " + calendar.getTime().toString()); 
        Log.d(tag, "CurrentDayOfWeek :" + getCurrentWeekDay()); 
        Log.d(tag, "CurrentDayOfMonth :" + getCurrentDayOfMonth()); 

        // Print Month 
        printMonth(month, year); 

        // Find Number of Events 
        eventsPerMonthMap = findNumberOfEventsPerMonth(year, month); 
       } 
      private String getMonthAsString(int i) 
       { 
        return months[i]; 
       } 

      private String getWeekDayAsString(int i) 
       { 
        return weekdays[i]; 
       } 

      private int getNumberOfDaysOfMonth(int i) 
       { 
        return daysOfMonth[i]; 
       } 

      public String getItem(int position) 
       { 
        return list.get(position); 
       } 

      @Override 
      public int getCount() 
       { 
        return list.size(); 
       } 

      /** 
      * Prints Month 
      * 
      * @param mm 
      * @param yy 
      */ 
      private void printMonth(int mm, int yy) 
       { 
        Log.d(tag, "==> printMonth: mm: " + mm + " " + "yy: " + yy); 
        // The number of days to leave blank at 
        // the start of this month. 
        int trailingSpaces = 0; 
        int leadSpaces = 0; 
        int daysInPrevMonth = 0; 
        int prevMonth = 0; 
        int prevYear = 0; 
        int nextMonth = 0; 
        int nextYear = 0; 

        int currentMonth = mm - 1; 
        String currentMonthName = getMonthAsString(currentMonth); 
        daysInMonth = getNumberOfDaysOfMonth(currentMonth); 

        Log.d(tag, "Current Month: " + " " + currentMonthName + " having " + daysInMonth + " days."); 

        // Gregorian Calendar : MINUS 1, set to FIRST OF MONTH 
        GregorianCalendar cal = new GregorianCalendar(yy, currentMonth, 1); 
        Log.d(tag, "Gregorian Calendar:= " + cal.getTime().toString()); 

        if (currentMonth == 11) 
         { 
          prevMonth = currentMonth - 1; 
          daysInPrevMonth = getNumberOfDaysOfMonth(prevMonth); 
          nextMonth = 0; 
          prevYear = yy; 
          nextYear = yy + 1; 
          Log.d(tag, "*->PrevYear: " + prevYear + " PrevMonth:" + prevMonth + " NextMonth: " + nextMonth + " NextYear: " + nextYear); 
         } 
        else if (currentMonth == 0) 
         { 
          prevMonth = 11; 
          prevYear = yy - 1; 
          nextYear = yy; 
          daysInPrevMonth = getNumberOfDaysOfMonth(prevMonth); 
          nextMonth = 1; 
          Log.d(tag, "**--> PrevYear: " + prevYear + " PrevMonth:" + prevMonth + " NextMonth: " + nextMonth + " NextYear: " + nextYear); 
         } 
        else 
         { 
          prevMonth = currentMonth - 1; 
          nextMonth = currentMonth + 1; 
          nextYear = yy; 
          prevYear = yy; 
          daysInPrevMonth = getNumberOfDaysOfMonth(prevMonth); 
          Log.d(tag, "***---> PrevYear: " + prevYear + " PrevMonth:" + prevMonth + " NextMonth: " + nextMonth + " NextYear: " + nextYear); 
         } 

        // Compute how much to leave before before the first day of the 
        // month. 
        // getDay() returns 0 for Sunday. 
        int currentWeekDay = cal.get(Calendar.DAY_OF_WEEK) - 1; 
        trailingSpaces = currentWeekDay; 

        Log.d(tag, "Week Day:" + currentWeekDay + " is " + getWeekDayAsString(currentWeekDay)); 
        Log.d(tag, "No. Trailing space to Add: " + trailingSpaces); 
        Log.d(tag, "No. of Days in Previous Month: " + daysInPrevMonth); 

        if (cal.isLeapYear(cal.get(Calendar.YEAR)) && mm == 2) 
         { 
          ++daysInMonth; 
         } 

        // Trailing Month days 
        for (int i = 0; i < trailingSpaces; i++) 
         { 
          Log.d(tag, "PREV MONTH:= " + prevMonth + " => " + getMonthAsString(prevMonth) + " " + String.valueOf((daysInPrevMonth - trailingSpaces + DAY_OFFSET) + i)); 
          list.add(String.valueOf((daysInPrevMonth - trailingSpaces + /*DAY_OFFSET)*/ 1) + i) + "-GREY" + "-" + getMonthAsString(prevMonth) + "-" + prevYear); 
         } 

        // Current Month Days 
        for (int i = 1; i <= daysInMonth; i++) 
         { 
          Log.d(currentMonthName, String.valueOf(i) + " " + getMonthAsString(currentMonth) + " " + yy); 
          if (i == getCurrentDayOfMonth()) 
           { 
            list.add(String.valueOf(i) + "-BLUE" + "-" + getMonthAsString(currentMonth) + "-" + yy); 
           } 
          else 
           { 
            list.add(String.valueOf(i) + "-WHITE" + "-" + getMonthAsString(currentMonth) + "-" + yy); 
           } 
         } 

        // Leading Month days 
        for (int i = 0; i < list.size() % 7; i++) 
         { 
          Log.d(tag, "NEXT MONTH:= " + getMonthAsString(nextMonth)); 
          list.add(String.valueOf(i + 1) + "-GREY" + "-" + getMonthAsString(nextMonth) + "-" + nextYear); 
         } 
       } 

      /** 
      * NOTE: YOU NEED TO IMPLEMENT THIS PART Given the YEAR, MONTH, retrieve 
      * ALL entries from a SQLite database for that month. Iterate over the 
      * List of All entries, and get the dateCreated, which is converted into 
      * day. 
      * 
      * @param year 
      * @param month 
      * @return 
      */ 
      private HashMap findNumberOfEventsPerMonth(int year, int month) 
       { 
        HashMap map = new HashMap<String, Integer>(); 
        // DateFormat dateFormatter2 = new DateFormat(); 
        //      
        // String day = dateFormatter2.format("dd", dateCreated).toString(); 
        // 
        // if (map.containsKey(day)) 
        // { 
        // Integer val = (Integer) map.get(day) + 1; 
        // map.put(day, val); 
        // } 
        // else 
        // { 
        // map.put(day, 1); 
        // } 
        return map; 
       } 

      @Override 
      public long getItemId(int position) 
       { 
        return position; 
       } 

      @Override 
      public View getView(int position, View convertView, ViewGroup parent) 
       { 
        View row = convertView; 
        if (row == null) 
         { 
          LayoutInflater inflater = (LayoutInflater) _context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
          row = inflater.inflate(R.layout.calendar_day_gridcell, parent, false); 
         } 

        // Get a reference to the Day gridcell 
        gridcell = (Button) row.findViewById(R.id.calendar_day_gridcell); 
        gridcell.setOnClickListener(this); 

        // ACCOUNT FOR SPACING 

        Log.d(tag, "Current Day: " + getCurrentDayOfMonth()); 
        String[] day_color = list.get(position).split("-"); 
        String theday = day_color[0]; 
        String themonth = day_color[2]; 
        String theyear = day_color[3]; 
        if ((!eventsPerMonthMap.isEmpty()) && (eventsPerMonthMap != null)) 
         { 
          if (eventsPerMonthMap.containsKey(theday)) 
           { 
            num_events_per_day = (TextView) row.findViewById(R.id.num_events_per_day); 
            Integer numEvents = (Integer) eventsPerMonthMap.get(theday); 
            num_events_per_day.setText(numEvents.toString()); 
           } 
         } 

        // Set the Day GridCell 
        gridcell.setText(theday); 
        gridcell.setTag(theday + "-" + themonth + "-" + theyear); 
        Log.d(tag, "Setting GridCell " + theday + "-" + themonth + "-" + theyear); 

        if (day_color[1].equals("GREY")) 
         { 
          gridcell.setTextColor(Color.LTGRAY); 
         } 
        if (day_color[1].equals("WHITE")) 
         { 
          gridcell.setTextColor(Color.WHITE); 
         } 
        if (day_color[1].equals("BLUE")) 
         { 
          gridcell.setTextColor(getResources().getColor(R.color.static_text_color)); 
         } 
        return row; 
       } 
      @Override 
      public void onClick(View view) 
       { 
        String date_month_year = (String) view.getTag(); 
        selectedDayMonthYearButton.setText("Selected: " + date_month_year); 

        try 
         { 
          Date parsedDate = dateFormatter.parse(date_month_year); 
          Log.d(tag, "Parsed Date: " + parsedDate.toString()); 

         } 
        catch (ParseException e) 
         { 
          e.printStackTrace(); 
         } 
       } 

      public int getCurrentDayOfMonth() 
       { 
        return currentDayOfMonth; 
       } 

      private void setCurrentDayOfMonth(int currentDayOfMonth) 
       { 
        this.currentDayOfMonth = currentDayOfMonth; 
       } 
      public void setCurrentWeekDay(int currentWeekDay) 
       { 
        this.currentWeekDay = currentWeekDay; 
       } 
      public int getCurrentWeekDay() 
       { 
        return currentWeekDay; 
       } 
     } 
} 

誰能幫我添加事件，以及如何向用戶發送通知？

Answer 1

我認爲您對Google日曆和日曆中的內容感到困惑。其實沒有Android的默認日曆應用程序。用戶可以從網上獲取Google日曆，並且可以使用其郵件ID配置該日曆。如果您必須創建任何事件，則應該訪問此日曆以便這樣做。 在開始處理之前，請檢查您是否安裝了Google日曆。如果你正在使用模擬器，我建議你去一個真正的設備。

並參考下面的鏈接。這可能有幫助。

How to set a reminder in Android?