How to subtract x amount of days from todays date

Question

I need to count back 90 days, 120 days and 160 days for a few items. How would I code this? I keep finding java code but that brings up errors when I am developing for android.

I need to take todays date and subtract the x amount of days and have it result be displayed on the screen nothing else. Thanks

Answer 1

You should use the Calendar class :

//Calendar set to the current date 
Calendar calendar=Calendar.getInstance();
//rollback 90 days
calendar.add(Calendar.DAY_OF_YEAR, -90);
//now the date is 90 days back
Log.i("MyApp","90 days ago:"+calendar.getTime().toString());