1
我需要帮助了解如何在此日历上显示（变灰）日历。如何在gridview上获取前一个月的日期（日历）
我在这里得到目前的月视图..但正如你可以看到前几个月的日子是不可见的。我知道为什么..但如何去做呢？还有一些bug有没有在目前这个作为一个well.please help.Posting代码自定义适配器类：
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;}
，这是怎么了活动代码使用该适配器：
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*/
和我的继承人日历视图屏幕（网格）：
CalendarView截图： Grid http://i45.tinypic.com/30wl3fc.png
是直的，并给点意见，我要的是，本月1日之前空白框为必填项与上月的最后一周的日子