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我正在使用这个示例代码http://www.androidhub4you.com/2012/10/custom-calendar-in-android.html我只想在 gridview 中显示当前月份的天数。我在下面描述了我的问题。请帮帮我。我只是想显示当前的工作日。

假设今天的日期是 7 月 21 日，星期三网格显示具有此值的单行

 Sun  Mon tues  Wed  Thurs  Fri  Sat
 18    19   20  (21)  22    23    24

但我的代码只会显示这个值

 Sun  Mon tues  Wed  Thurs  Fri  Sat
 1    2   3      4     5     6    7

我更改此代码形式的示例代码

 // 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);
 }

使用此代码

                   // Current Month Days
        for (int i = 1; i <= currentWeekDay; 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);
            }







         ///////    full source code is below////////////






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

private TextView currentMonth;
private Button selectedDayMonthYearButton;
private ImageView prevMonth;
private ImageView nextMonth;


 private GridView calendarView;
private GridCellAdapter adapter;
private Calendar _calendar;
@SuppressLint("NewApi")
private int month, year;
@SuppressWarnings("unused")
@SuppressLint({ "NewApi", "NewApi", "NewApi", "NewApi" })
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.my_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 = (TextView) this.findViewById(R.id.currentMonth);
    currentMonth.setText(DateFormat.format(dateTemplate,
            _calendar.getTime()));

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



    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_WEEK));
    currentMonth.setText(DateFormat.format(dateTemplate,
            _calendar.getTime()));
    adapter.notifyDataSetChanged();
    calendarView.setAdapter(adapter);
}

@Override
public void onClick(View v) {
    if (v == prevMonth) {
        if (month <= 1) {
            month = 12;
            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 int daysInMonth;
    private int currentDayOfMonth;
    private int currentWeekDay;
    private Button gridcell;
    private TextView num_events_per_day;
    private final HashMap<String, Integer> 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>();
        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);
        int trailingSpaces = 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.");

        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);
        }

        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)))
            if (mm == 2)
                ++daysInMonth;
            else if (mm == 3)
                ++daysInPrevMonth;

        // 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)
                            + i)
                    + "-GREY"
                    + "-"
                    + getMonthAsString(prevMonth)
                    + "-"
                    + prevYear);
        }

        // Current Month Days
        for (int i = 1; i <= currentWeekDay; 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<String, Integer> findNumberOfEventsPerMonth(int year,
            int month) {
        HashMap<String, Integer> map = new HashMap<String, Integer>();

        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.screen_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(getResources()
                    .getColor(R.color.lightgray));
        }
        if (day_color[1].equals("WHITE")) {
            gridcell.setTextColor(getResources().getColor(
                    R.color.lightgray02));
        }
        if (day_color[1].equals("BLUE")) {

    gridcell.setTextColor(getResources().getColor(R.color.orrange));
        }
        return row;
    }

    @Override
    public void onClick(View view) {
        String date_month_year = (String) view.getTag();
        selectedDayMonthYearButton.setText("Selected: " + date_month_year);
        Log.e("Selected date", 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;
    }
}
  }
4

1 回答 1

1

我希望这是你想要的。

  1. 将您的 printMonth() 重命名为 printMonth_old ()
  2. 复制并粘贴下面的 printMonth 代码
  3. 用一行修改getView()方法。
  4. 在Activity中创建3个变量并修改onCreate进行初始化
  5. 尝试一下

您需要进行一些更改，例如单击“下一个”按钮提前一周时以及单击“上一个”时。按钮返回一周。

1) 重命名您的实际 printMonth 后复制并粘贴此代码

    private void printMonth(int mm, int yy)
    {
        Log.d(tag, "==> printMonth: mm: " + mm + " " + "yy: " + yy);
        int trailingSpaces = 0;
        int daysInPrevMonth = 0;

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

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

        GregorianCalendar cal = new GregorianCalendar(yy, currentMonth, getCurrentDayOfMonth());
        Log.d(tag, "Gregorian Calendar:= " + cal.getTime().toString());

        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)))
            if (mm == 2) ++daysInMonth;
            else if (mm == 3)
                ++daysInPrevMonth;

        // move at the begging of the week
        int i = getCurrentDayOfMonth();
        int j = currentWeekDay;
        while (i > 1 && j > 0)
        {
            i--;
            j--;
        }
        // print the week, starting at Sunday
        for (j = 0; i <= daysInMonth && j < 7; i++, j++)
        {
            Log.d(currentMonthName, String.valueOf(i) + " " + getMonthAsString(currentMonth) + " " + yy);
            // If it is the current date, printing in BLUE (Orange)
            if (i == actualDay && mm == actualMonth && yy == actualYear)
            {
                list.add(String.valueOf(i) + "-BLUE" + "-" + getMonthAsString(currentMonth) + "-" + yy);
            }
            else
            {
                list.add(String.valueOf(i) + "-WHITE" + "-" + getMonthAsString(currentMonth) + "-" + yy);
            }
        }
    }

2）改变getView方法，只增加一行：

if (day_color[1].equals("BLUE"))
{
    // Add only the following line
    gridcell.setText("(" + theday + ")");
    gridcell.setTextColor(getResources().getColor(R.color.orrange));
}

3）在活动上添加这一行：

public class MyCalendarActivity extends Activity implements OnClickListener
{
    ....
    private int month, year;
    // add this line below
    private int actualYear, actualMonth, actualDay;

在 onCreate() 上也添加这些行：

public void onCreate(Bundle savedInstanceState)
{
  ....

  month = _calendar.get(Calendar.MONTH) + 1;
  year = _calendar.get(Calendar.YEAR);
  // Add these 3 lines          
  actualYear = year;
  actualMonth = month;
  actualDay = _calendar.get(Calendar.DAY_OF_MONTH);
于 2013-07-21T10:42:14.987 回答