如何在ListView Android上显示一周内的日期

Question

I have this:

Date date = new Date();
SimpleDateFormat curFormater = new SimpleDateFormat("EEEE, MMMM dd, yyyy"); 
String dateStr = curFormater.format(date);

setListAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, new String [] {dateStr}));

But it only displays once, I want to make it into listview. Aany ideas? Thx.

Answer 1

I'm not sure why you would want a list view of just one date, however, your problem seems to be the understanding of using an ListView, for example your array has one item, as in my first example

String[] = {"hello"};

This will just show one item in the list view, as in your example

String[] = {"hello","how","are","you"};

Will show 4 lines, if you want to show the same date multiple times, you could possibly create an array like

int x = 5;

String[] print = new String[x];

for(int i = 0; i<5; i++) {
   print[i] = date;
}

This will print out 5 lines of date

Answer 2

Try something like this...

SimpleDateFormat curFormater = new SimpleDateFormat("EEEE, MMMM dd, yyyy"); 
GregorianCalendar date = new GregorianCalendar();
String[] dateStringArray = new String[7];

for (int day = 0; day < 7; day++) {
    dateStringArray[day] = curFormater.format(date.getTime());
    date.roll(Calendar.DAY_OF_YEAR, true);
}
setListAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, dateStringArray));

Answer 3

The array contains just one item:

...new String [] {dateStr}...

You can easily test the result doing:

...new String [] {dateStr,dateStr,dateStr,dateStr,dateS}...

then build the array with the dates you want to show.

Answer 4

You should really try to be a bit more descriptive and elaborate on what it's really that you're after. I assume that by now you've figured out how to add multiple entries to a list, based on the answers already given.

To fill your list with subsequent dates, simply get a Calendar instance and create a loop incrementing the day field by 'one' with every step. Something like:

List<String> dateList = new ArrayList<String>();
Calendar calendar = Calendar.getInstance();
for (int i=0; i<31; i++) {
    calendar.add(Calendar.DATE, 1);
    SimpleDateFormat curFormater = new SimpleDateFormat("EEEE, MMMM dd, yyyy");
    dateList.add(curFormater.format(calendar.getTime()));
}
setListAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, dateList));

That should show you today plus the next 31 days in a list.

//edit: yuck, missed MisterSquonk's reply, which covers a similar approach...