我正在制作一个小程序，我希望在事件日期显示事件列表和点图标
每当我使用此行时，获取点图标但未获取事件列表：
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd"); // [dot]
当我使用下面的行时，获取事件列表但没有获得Dot Icon：
SimpleDateFormat formatter = new SimpleDateFormat("MMMM dd, yyyy"); // [List]
看到我的整个代码，我已经写了开发这个程序....
CalendarAdapter.java：
public class CalendarAdapter extends BaseAdapter {
private Context mContext;
private java.util.Calendar month;
public GregorianCalendar pmonth; // calendar instance for previous month
/**
* calendar instance for previous month for getting complete view
*/
public GregorianCalendar pmonthmaxset;
private GregorianCalendar selectedDate;
int firstDay;
int maxWeeknumber;
int maxP;
int calMaxP;
int lastWeekDay;
int leftDays;
int mnthlength;
String itemvalue,curentDateString;
DateFormat df;
private ArrayList<String> items;
public static List<String> dayString;
private View previousView;
public CalendarAdapter(Context c, GregorianCalendar monthCalendar) {
CalendarAdapter.dayString = new ArrayList<String>();
Locale.setDefault(Locale.US);
month = monthCalendar;
selectedDate = (GregorianCalendar) monthCalendar.clone();
mContext = c;
month.set(GregorianCalendar.DAY_OF_MONTH, 1);
this.items = new ArrayList<String>();
df = new SimpleDateFormat("yyyy-MM-dd", Locale.US);
curentDateString = df.format(selectedDate.getTime());
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 dayString.size();
}
public Object getItem(int position) {
return dayString.get(position);
}
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);
// separates daystring into parts.
String[] separatedTime = dayString.get(position).split("-");
// taking last part of date. ie; 2 from 2012-12-02
String gridvalue = separatedTime[2].replaceFirst("^0*", "");
// checking whether the day is in current month or not.
if ((Integer.parseInt(gridvalue) > 1) && (position < firstDay)) {
// setting offdays to white color.
dayView.setTextColor(Color.WHITE);
dayView.setClickable(false);
dayView.setFocusable(false);
} else if ((Integer.parseInt(gridvalue) < 7) && (position > 28)) {
dayView.setTextColor(Color.WHITE);
dayView.setClickable(false);
dayView.setFocusable(false);
} else {
// setting curent month's days in blue color.
dayView.setTextColor(Color.BLUE);
}
if (dayString.get(position).equals(curentDateString)) {
setSelected(v);
previousView = v;
} else {
v.setBackgroundResource(R.drawable.list_item_background);
}
dayView.setText(gridvalue);
// create date string for comparison
String date = dayString.get(position);
if (date.length() == 1) {
date = "0" + date;
}
String monthStr = "" + (month.get(GregorianCalendar.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 View setSelected(View view) {
if (previousView != null) {
previousView.setBackgroundResource(R.drawable.list_item_background);
}
previousView = view;
view.setBackgroundResource(R.drawable.calendar_cel_selectl);
return view;
}
public void refreshDays() {
// clear items
items.clear();
dayString.clear();
Locale.setDefault(Locale.US);
pmonth = (GregorianCalendar) month.clone();
// month start day. ie; sun, mon, etc
firstDay = month.get(GregorianCalendar.DAY_OF_WEEK);
// finding number of weeks in current month.
maxWeeknumber = month.getActualMaximum(GregorianCalendar.WEEK_OF_MONTH);
// allocating maximum row number for the gridview.
mnthlength = maxWeeknumber * 7;
maxP = getMaxP(); // previous month maximum day 31,30....
calMaxP = maxP - (firstDay - 1);// calendar offday starting 24,25 ...
/**
* Calendar instance for getting a complete gridview including the three
* month's (previous,current,next) dates.
*/
pmonthmaxset = (GregorianCalendar) pmonth.clone();
/**
* setting the start date as previous month's required date.
*/
pmonthmaxset.set(GregorianCalendar.DAY_OF_MONTH, calMaxP + 1);
/**
* filling calendar gridview.
*/
for (int n = 0; n < mnthlength; n++) {
itemvalue = df.format(pmonthmaxset.getTime());
pmonthmaxset.add(GregorianCalendar.DATE, 1);
dayString.add(itemvalue);
}
}
private int getMaxP() {
int maxP;
if (month.get(GregorianCalendar.MONTH) == month
.getActualMinimum(GregorianCalendar.MONTH)) {
pmonth.set((month.get(GregorianCalendar.YEAR) - 1),
month.getActualMaximum(GregorianCalendar.MONTH), 1);
} else {
pmonth.set(GregorianCalendar.MONTH,
month.get(GregorianCalendar.MONTH) - 1);
}
maxP = pmonth.getActualMaximum(GregorianCalendar.DAY_OF_MONTH);
return maxP;
}
}
CalendarView.java：
public class CalendarView extends Activity {
public GregorianCalendar month, itemmonth;// calendar instances.
public CalendarAdapter adapter;// adapter instance
public Handler handler;// for grabbing some event values for showing the dot
// marker.
public ArrayList<String> items; // container to store calendar items which
// needs showing the event marker
public static ArrayList<String> event;
LinearLayout rLayout;
ArrayList<String> date;
ArrayList<String> desc;
ArrayList<Integer> image;
ListView listview;
ListAdapter _listadapter;
String[] months = {"January", "February",
"March", "April", "May", "June", "July",
"August", "September", "October", "November",
"December"};
String selectedYear;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.calendar);
Locale.setDefault(Locale.US);
rLayout = (LinearLayout) findViewById(R.id.text);
listview = (ListView) findViewById(R.id.mylistview);
month = (GregorianCalendar) GregorianCalendar.getInstance();
itemmonth = (GregorianCalendar) month.clone();
items = new ArrayList<String>();
adapter = new CalendarAdapter(this, month);
GridView gridview = (GridView) findViewById(R.id.gridview);
gridview.setAdapter(adapter);
handler = new Handler();
handler.post(calendarUpdater);
TextView title = (TextView) findViewById(R.id.title);
title.setText(android.text.format.DateFormat.format("MMMM yyyy", month));
selectedYear = android.text.format.DateFormat.format("MMMM dd, yyyy", month).toString();
RelativeLayout previous = (RelativeLayout) findViewById(R.id.previous);
previous.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
setPreviousMonth();
refreshCalendar();
}
});
RelativeLayout next = (RelativeLayout) findViewById(R.id.next);
next.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
setNextMonth();
refreshCalendar();
}
});
gridview.setOnItemClickListener(new OnItemClickListener() {
@SuppressWarnings("deprecation")
public void onItemClick(AdapterView<?> parent, View v,
int position, long id) {
// removing the previous view if added
if (((LinearLayout) rLayout).getChildCount() > 0) {
((LinearLayout) rLayout).removeAllViews();
}
desc = new ArrayList<String>();
date = new ArrayList<String>();
((CalendarAdapter) parent.getAdapter()).setSelected(v);
String selectedGridDate = CalendarAdapter.dayString
.get(position);
String[] separatedTime = selectedGridDate.split("-");
String gridvalueString = separatedTime[2].replaceFirst("^0*",
"");// taking last part of date. ie; 2 from 2012-12-02.
int gridvalue = Integer.parseInt(gridvalueString);
// navigate to next or previous month on clicking offdays.
if ((gridvalue > 10) && (position < 8)) {
setPreviousMonth();
refreshCalendar();
} else if ((gridvalue < 7) && (position > 28)) {
setNextMonth();
refreshCalendar();
}
((CalendarAdapter) parent.getAdapter()).setSelected(v);
for (int i = 0; i < Utility.startDates.size(); i++) {
if (Utility.startDates.get(i).equals(selectedGridDate)) {
desc.add(Utility.nameOfEvent.get(i));
}
}
if (desc.size() > 0) {
for (int i = 0; i < desc.size(); i++) {
TextView rowTextView = new TextView(CalendarView.this);
rowTextView
.setLayoutParams(new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.FILL_PARENT, // LinearLayout.LayoutParams.FILL_PARENT,
1));
rowTextView.setText("Event:" + desc.get(i));
rowTextView.setTextColor(Color.BLACK);
rLayout.addView(rowTextView);
}
}
desc = null;
}
});
}
protected void setNextMonth() {
if (month.get(GregorianCalendar.MONTH) == month
.getActualMaximum(GregorianCalendar.MONTH)) {
month.set((month.get(GregorianCalendar.YEAR) + 1),
month.getActualMinimum(GregorianCalendar.MONTH), 1);
} else {
month.set(GregorianCalendar.MONTH,
month.get(GregorianCalendar.MONTH) + 1);
}
listview.setVisibility(View.GONE);
}
protected void setPreviousMonth() {
if (month.get(GregorianCalendar.MONTH) == month
.getActualMinimum(GregorianCalendar.MONTH)) {
month.set((month.get(GregorianCalendar.YEAR) - 1),
month.getActualMaximum(GregorianCalendar.MONTH), 1);
} else {
month.set(GregorianCalendar.MONTH,
month.get(GregorianCalendar.MONTH) - 1);
}
listview.setVisibility(View.GONE);
}
protected void showToast(String string) {
Toast.makeText(this, string, Toast.LENGTH_SHORT).show();
}
public void refreshCalendar() {
TextView title = (TextView) findViewById(R.id.title);
adapter.refreshDays();
adapter.notifyDataSetChanged();
handler.post(calendarUpdater); // generate some calendar items
title.setText(android.text.format.DateFormat.format("MMMM yyyy", month));
selectedYear = android.text.format.DateFormat.format("MMMM dd, yyyy", month).toString();
}
public Runnable calendarUpdater = new Runnable() {
@SuppressWarnings("unused")
@Override
public void run() {
items.clear();
// Print dates of the current week
DateFormat df = new SimpleDateFormat("MMMM dd, yyyy", Locale.US);
String itemvalue;
event = Utility.readCalendarEvent_static(CalendarView.this);
Log.d("=====Event====", event.toString());
Log.d("=====Date ARRAY====", Utility.image.toString());
for (int i = 0; i < Utility.startDates.size(); i++) {
itemvalue = df.format(itemmonth.getTime());
itemmonth.add(GregorianCalendar.DATE, 1);
items.add(Utility.startDates.get(i).toString());
}
adapter.setItems(items);
adapter.notifyDataSetChanged();
goToList(listview);
}
};
public void goToList(View v) {
desc = new ArrayList<String>();
date = new ArrayList<String>();
image = new ArrayList<Integer>();
Calendar cal = Calendar.getInstance();
String month = months[cal.get(Calendar.MONTH)];
System.out.println("Month name: " + month);
for(int i=0;i< Utility.startDates.size();i++) {
String [] yearString = Utility.startDates.get(i).split(" ");
String [] currentCalanderYear = selectedYear.split(" ");
if(currentCalanderYear[0].equalsIgnoreCase(yearString[0])) {
desc.add(CalendarView.event.get(i));
date.add(Utility.startDates.get(i));
image.add(Utility.image.get(i));
}
}
if(desc.size()>0) {
listview.setVisibility(View.VISIBLE);
_listadapter = new ListAdapter(CalendarView.this);
listview.setAdapter(_listadapter);
} else {
listview.setVisibility(View.GONE);
}
}
private class ListAdapter extends BaseAdapter {
LayoutInflater inflater;
ViewHolder viewHolder;
public ListAdapter(Context context) {
inflater = LayoutInflater.from(context);
}
public int getCount() {
// TODO Auto-generated method stub
return desc.size();
}
public Object getItem(int position) {
// TODO Auto-generated method stub
return position;
}
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
public View getView(final int position, View convertView,
ViewGroup parent) {
if (convertView == null) {
convertView = inflater.inflate(R.layout.event_row, null);
viewHolder = new ViewHolder();
viewHolder.logo = (ImageView) convertView.findViewById(R.id.logo);
viewHolder.title = (TextView) convertView
.findViewById(R.id.txteventname);
viewHolder.date = (TextView) convertView
.findViewById(R.id.txteventdate);
convertView.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) convertView.getTag();
}
viewHolder.logo.setBackgroundResource(image.get(position));
viewHolder.title.setText(Html.fromHtml(desc
.get(position)));
viewHolder.date.setText(Html.fromHtml(date
.get(position)));
return convertView;
}
}
private class ViewHolder {
TextView title;
TextView date;
ImageView logo;
}
}
答案 0 :(得分：1)
在此代码中，日历适配器和列表视图中的日期格式不同， 所以替换日历适配器中的行 df = new SimpleDateFormat（“yyyy-MM-dd”，Locale.US）; 至 df = new SimpleDateFormat（“MMMM dd，yyyy”，Locale.US）;
答案 1 :(得分：1)
代码的问题是
在calenderAdapter类中：列表“项”的日期格式类似于“ 2013年11月3日”，并且您要与之比较的dayString采用格式像“ 2013-10-27 ”这样的东西。
所以if条件
if (date.length() > 0 && items != null && items.contains(daystring)) {
iw.setVisibility(View.VISIBLE);
}
false ，您无法将图片的可见性设置为可见。
尝试将daystring转换为“ 2013年11月3日”等格式，您的问题就会得到解决。
您可以尝试这样的事情：
String value = String.format("%s %s, %s",getMonthForInt(separatedTime[1]),separatedTime[2],separatedTime[0]);
，方法定义如下
String getMonthForInt(String monthNum)
{
String month = "";
DateFormatSymbols dfs = new DateFormatSymbols();
int m = Integer.parseInt(monthNum) - 1;
String[] months = dfs.getMonths();
if (m >= 0 && m <= 11 ) {
month = months[m];
}
return month;
}
并将您的if条件更改为
if (date.length() > 0 && items != null && items.contains(value)) {
iw.setVisibility(View.VISIBLE);
} else {
iw.setVisibility(View.INVISIBLE);
}
希望这会对你有所帮助。快乐的编码。