if else statement for DateUtils

Question

1. So before this I already get the time difference between two times.
2. Now, I want to display point that will be charged for specific time duration like this: in my code, time duration named as diffResult, if diffResult less than 30 minutes, point will be charged is multiply by 1 diffResult =2, so 2*1 ,point will be charged is 2.

3. I wanted to use if else statement, but I got some errors. Here is my code

   pointChargeBtn.setOnClickListener(new View.OnClickListener() {
       @Override
       public void onClick(View view) {
   
           SimpleDateFormat simpleDateFormat = new SimpleDateFormat("HH:mm a");
           Date date1 = null;
           try {
               date1 = simpleDateFormat.parse(timeResult.getText().toString());
           } catch (ParseException e) {
               e.printStackTrace();
           }
           Date date2 = null;
           try {
               date2 = simpleDateFormat.parse(timeResult2.getText().toString());
           } catch (ParseException e) {
               e.printStackTrace();
           }
           String diffResult= DateUtils.getRelativeTimeSpanString(date1.getTime(), date2.getTime(), DateUtils.MINUTE_IN_MILLIS).toString();
   
           if(diffResult < 30){
   
               int point = diffResult * 2;
               pointChargeBtn.setText(point);
           }
   
   
       }
   });
   

Answer 1

Your error is:

 String diffResult= DateUtils.getRelativeTimeSpanString(date1.getTime(), date2.getTime(), DateUtils.MINUTE_IN_MILLIS).toString();

        if(diffResult < 30){

            int point = diffResult * 2;
            pointChargeBtn.setText(point);
        }

diffResult is a String so you can't compare it with a number neither multiply it

EDIT

You can fix it like that:

// difference in milliseconds
// Using Math.abs is optional. It allows us to not care about which date is the latest.
int diffInMillis = Math.abs(date2.getTime() - date1.getTime()); 

// Calculates the time in minutes
int diffInMinutes = diffInMillis / (1000 * 60);

// if difference is less (strictly) than 30 minutes
if (diffInMinutes < 30){
    // TODO: Do something
}