how to change backgrounds color of cardview day wise?

Question

I'm working on one app. In that app, there is a card view. I want to change background color of the card view day wise.

Like Monday = red color Tuesday = Green color

till Sunday! and from next Monday, it will then start from first like Monday=red color

Any idea? how to achieve this?

I tried this

Calendar calendar = Calendar.getInstance();
        String currentDate = DateFormat.getDateInstance(DateFormat.FULL).format(calendar.getTime());

It gives me output like this

Sunday, April 19, 2020

now, how can I use this to change the background color?

I even don't know how to implement it as I'm a beginner. I tried to search here but I didn't found any resources. any little idea will help me to achieve that — kernelrpc_mach_vm_protect, Apr 19 '20 at 06:11
Please share us what you have tried, what you explained, is easy to implement with switch case and set numbers to each day, but for more clarification share us your code. — Parisa Baastani, Apr 19 '20 at 06:11
Does this answer your question? [What is the easiest way to get the current day of the week in Android?](https://stackoverflow.com/questions/5574673/what-is-the-easiest-way-to-get-the-current-day-of-the-week-in-android) — Parisa Baastani, Apr 19 '20 at 06:42

score 2 · Accepted Answer · edited Apr 19 '20 at 06:39

Use SimpleDateFormat to format dates and times into a human-readable string, with respect to the user's locale.

Example to get the current day of the week (e.g. "Sunday"):

Calendar c= Calendar.getInstance();
SimpleDateFormat sd=new SimpleDateFormat("EEEE");
String dayofweek=sd.format(c.getTime());

Now change the background color :

if (dayofweek.equals("Saturday")) {
    cardview.setBackgroundColor(getResources().getColor(color.white));
}

score 0 · Answer 2 · answered Apr 19 '20 at 06:21

0

int dayOfWeek=bday.get(Calendar.DAY_OF_WEEK); // Returns 3, for Tuesday

Then use if ,else if statements for different colours for different days accordingly.

answered Apr 19 '20 at 06:21

score 0 · Answer 3 · edited Apr 19 '20 at 08:33

You can achieve it with the following code

Calendar calendar = Calendar.getInstance();
int dayOfWeek = calendar.get(Calendar.DAY_OF_WEEK);


switch (dayOfWeek) {
  case Calendar.MONDAY:
    cardView.setBackground(ContextCompat.getColor(context, R.color.color_monday));
    break;
  case Calendar.TUESDAY:
    cardView.setBackground(ContextCompat.getColor(context, R.color.color_tuesday));
    break;
  case Calendar.WEDNESDAY:
    cardView.setBackground(ContextCompat.getColor(context, R.color.color_wednesday));
    break;
  case Calendar.THURSDAY:
    cardView.setBackground(ContextCompat.getColor(context, R.color.color_thursday));
    break;
  case Calendar.FRIDAY:
    cardView.setBackground(ContextCompat.getColor(context, R.color.color_friday));
    break;
  case Calendar.SATURDAY:
    cardView.setBackground(ContextCompat.getColor(context, R.color.color_saturday));
    break;
  case Calendar.SUNDAY:
    cardView.setBackground(ContextCompat.getColor(context, R.color.color_sunday));
    break;
}

how to change backgrounds color of cardview day wise?

3 Answers3