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このカレンダーで前月の日を表示（グレー表示）する方法についてサポートが必要です。

ここで現在の月のビューを取得しています。しかし、ご覧のとおり、前の月の日は表示されていません。理由はわかりますが、どうすればよいですか。また、この現在のバグにもいくつかのバグがあります。助けてください。カスタムアダプタクラスのコードを投稿する：

CalendarAdapter.java

    import java.util.ArrayList;
    import java.util.Calendar;
    import android.content.Context;
    import android.graphics.Color;
    import android.view.LayoutInflater;
    import android.view.View;
    import android.view.ViewGroup;
    import android.widget.BaseAdapter;
    import android.widget.ImageView;
    import android.widget.TextView;

  public class CalendarAdapter extends BaseAdapter {
static final int FIRST_DAY_OF_WEEK =0; // Sunday = 0, Monday = 1


private Context mContext;

private java.util.Calendar month;
private Calendar selectedDate;
private ArrayList<String> items;

public CalendarAdapter(Context c, Calendar monthCalendar) {
    month = monthCalendar;
    selectedDate = (Calendar)monthCalendar.clone();
    mContext = c;
    month.set(Calendar.DAY_OF_MONTH, 1);
    this.items = new ArrayList<String>();
    refreshDays();
}

public void setItems(ArrayList<String> items) {
    for(int i = 0;i != items.size();i++){
        if(items.get(i).length()==1) {
        items.set(i, "0" + items.get(i));
        }
    }
    this.items = items;
}


public int getCount() {
    return days.length;
}

public Object getItem(int position) {
    return null;
}

public long getItemId(int position) {
    return 0;
}

// create a new view for each item referenced by the Adapter
public View getView(int position, View convertView, ViewGroup parent) {
    View v = convertView;
    TextView dayView;
    if (convertView == null) {  // if it's not recycled, initialize some attributes
        LayoutInflater vi = (LayoutInflater)mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        v = vi.inflate(R.layout.calendar_item, null);
        
    }
    dayView = (TextView)v.findViewById(R.id.date);
    
    // disable empty days from the beginning
    if(days[position].equals("")) {
        dayView.setClickable(false);
        dayView.setFocusable(false);
        //need to show previous months date
        
        
    }
    else {
        // mark current day as focused
        if(month.get(Calendar.YEAR)== selectedDate.get(Calendar.YEAR) && month.get(Calendar.MONTH)== selectedDate.get(Calendar.MONTH) && days[position].equals(""+selectedDate.get(Calendar.DAY_OF_MONTH))) {
            v.setBackgroundResource(R.drawable.date_area);
            dayView.setTextColor(Color.parseColor("#FFFFFF"));
        }
        else {
            v.setBackgroundResource(R.drawable.current_date_area);
        }
    }
    dayView.setText(days[position]);
    
    // create date string for comparison
    String date = days[position];
    
    if(date.length()==1) {
        date = "0"+date;
    }
    String monthStr = ""+(month.get(Calendar.MONTH)+1);
    if(monthStr.length()==1) {
        monthStr = "0"+monthStr;
    }
   
    // show icon if date is not empty and it exists in the items array
   /* ImageView iw = (ImageView)v.findViewById(R.id.date_icon);
    if(date.length()>0 && items!=null && items.contains(date)) {            
        iw.setVisibility(View.VISIBLE);
    }
    else {
        iw.setVisibility(View.INVISIBLE);
    }*/
    return v;
}

public void refreshDays()
{
    // clear items
    items.clear();
    
    int lastDay = month.getActualMaximum(Calendar.DAY_OF_MONTH);
    int firstDay = (int)month.get(Calendar.DAY_OF_WEEK);
    
    // figure size of the array
    if(firstDay==1){
        days = new String[lastDay+(FIRST_DAY_OF_WEEK*6)];
    }
    else {
        days = new String[lastDay+firstDay-(FIRST_DAY_OF_WEEK+1)];
    }
    
    int j=FIRST_DAY_OF_WEEK;
    
    // populate empty days before first real day
    if(firstDay>1) {
        for(j=0;j<firstDay-FIRST_DAY_OF_WEEK;j++) {
            days[j] = "";
        }
    }
    else {
        for(j=0;j<FIRST_DAY_OF_WEEK*6;j++) {
            days[j] = "";
        }
        j=FIRST_DAY_OF_WEEK*6+1; // sunday => 1, monday => 7
    }
    
    // populate days
    int dayNumber = 1;
    for(int i=j-1;i<days.length;i++) {
        days[i] = ""+dayNumber;
        dayNumber++;
    }
}

// references to our items
public String[] days;}

これは、このアダプターの使用方法に関するアクティビティコードです。

CalendarView.java

/*some code above*/
/*this is in the OnCreate block*/
adapter = new CalendarAdapter(this, month);

    GridView gridview = (GridView) findViewById(R.id.gridview);
    gridview.setAdapter(adapter);
/*some code below*/

これが私のカレンダー表示画面（グリッド）です：

CalendarViewスクリーンショット： グリッド

正直に言うと、私が欲しいのは、月の1日より前の空白のボックスに前月の先週の日を入力することだけです。

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1 に答える 1

2

別のカレンダーを宣言する

private java.util.Calendar month, prevMonth;

コンストラクターのカレンダーにクローンを追加します

prevMonth = (Calendar) month.clone();
prevMonth.roll(Calendar.MONTH, false);

次に、refreshDaysをこれに置き換えます。これにより、現在の月の最初の週と最後の週のそれぞれの先月と翌月の日が空白で埋められます。

public void refreshDays() {
    // clear items
    items.clear();

    int lastDay = month.getActualMaximum(Calendar.DAY_OF_MONTH);
    int firstDay = (int) month.get(Calendar.DAY_OF_WEEK);
    int maxweek = month.getActualMaximum(Calendar.WEEK_OF_MONTH);
    Log.d("CalendarAdapter", String.valueOf(maxweek));
    // figure size of the array
    /*
     * if (firstDay == 1) { days = new String[lastDay + (FIRST_DAY_OF_WEEK *
     * 6)]; }
     * 
     * else { days = new String[lastDay + firstDay - (FIRST_DAY_OF_WEEK +
     * 1)]; }
     */
    days = new String[maxweek * 7];

    int j = FIRST_DAY_OF_WEEK;

    // populate empty days before first real day
    if (firstDay > 1) {

        // can be made a bit faster if implemented without this following
        // for loop for roll
        for (j = 0; j < firstDay - FIRST_DAY_OF_WEEK; j++) {
            prevMonth.roll(Calendar.DAY_OF_MONTH, false);
            Log.d("CalendarAdapter",
                    "roll block: " + prevMonth.get(Calendar.DAY_OF_MONTH));
        }

        for (j = 0; j < firstDay - FIRST_DAY_OF_WEEK; j++) {

            // days[j] = "";
            prevMonth.roll(Calendar.DAY_OF_MONTH, true);
            int dayPrev = prevMonth.get(Calendar.DAY_OF_MONTH);
            days[j] = " " + String.valueOf(dayPrev) + " ";
            Log.d("CalendarAdapter", "calculation:J if firstDay>1 -- " + j
                    + " roll gives:" + dayPrev);
        }
    } else {
        for (j = 0; j < FIRST_DAY_OF_WEEK * 6; j++) {
            days[j] = "";
            Log.d("CalendarAdapter", "calculation:J if firstDay<1 -- " + j);
        }
        j = FIRST_DAY_OF_WEEK * 6 + 1; // sunday => 1, monday => 7
    }

    // populate days
    int dayNumber = 1;
    boolean flag = false;
    for (int i = j - 1; i < days.length; i++) {

        days[i] = String.valueOf(dayNumber).trim() + ".";
        if (flag)
            days[i] = String.valueOf(dayNumber).trim();
        if (dayNumber == lastDay) {
            dayNumber = 0;
            flag=true;
        }
        dayNumber++;
    }
}

// references to our items
public String[] days;
}
于 2013-01-22T10:53:05.403 に答える