Question

I am working on a project in which I need to change the time to book order based on current time. What I need to do is I want to get the current time and have to generate a string list of time and populate them in spinner. eg. My start and end time are 11am to 2 pm and current time is 12.30 pm. So I need to take the current time and generate a list view of times of 30 mins gap till end time. So that will be 1:00,1:30,2:00.

public void doWork() {
runOnUiThread(new Runnable() {
    public void run() {
        try{
            TextView txtCurrentTime= (TextView)findViewById(R.id.lbltime);
                Date dt = new Date();
                int hours = dt.getHours();
                int minutes = dt.getMinutes();
                int seconds = dt.getSeconds();
                String curTime = hours + ":"+minute + ":"+ seconds;
                txtCurrentTime.setText(curTime);
        }catch (Exception e) {}
    }
});
}

class CountDownRunner implements Runnable{
// @Override
public void run() {
        while(!Thread.currentThread().isInterrupted()){
            try {
            doWork();
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                    Thread.currentThread().interrupt();
            }catch(Exception e){
            }
        }
 }
}

I have got this code from So which i can use to get current hours and min in hh:mm format. How to approach further?

Answer 1

Try this code:

List<String>timeslot=new ArrayList<String>();


    String stoptime="04:00 PM";
    String starttime="11:00 AM";
    SimpleDateFormat df1=new SimpleDateFormat("hh:mm a");
    Date d1=null;
    Date d2=null;
    try 
    {
         d1=df1.parse(stoptime);
         d2=df1.parse(starttime);
    } 
    catch (ParseException e)
    {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    Calendar now = Calendar.getInstance();

    SimpleDateFormat df2=new SimpleDateFormat("kk");
    String curtime=df2.format(now.getTime());
    stoptime=df2.format(d1);
    starttime=df2.format(d2);
    tv.setText(df2.format(d1));
    tv2.setText(curtime);
    int t1=Integer.parseInt(stoptime);
    int t2=Integer.parseInt(curtime);
    int t3=Integer.parseInt(starttime);
    if(t2>=t3)
    {

    while(t2<t1)
    {
        SimpleDateFormat df4=new SimpleDateFormat("mm");
        String curmin=df4.format(now.getTime());
        String stopmin=df4.format(d1);
        int t4=Integer.parseInt(curmin);
        if(t4<60)
        {
            int t5=60-t4;
            if(t5>30)
            {
                t5=t5-30;
            }
            now.add(Calendar.MINUTE, t5);
            SimpleDateFormat df3=new SimpleDateFormat("hh:mm aa");
            curtime=df3.format(now.getTime());
            timeslot.add(curtime);

        }
        now.add(Calendar.MINUTE, 30);
        SimpleDateFormat df3=new SimpleDateFormat("hh:mm aa");
        curtime=df3.format(now.getTime());
        timeslot.add(curtime);
        curtime=df2.format(now.getTime());
        t2=Integer.parseInt(curtime);
    }
    tv3.setText(curtime);
    ArrayAdapter<String>aa=new ArrayAdapter<String>(getBaseContext(), android.R.layout.simple_spinner_item, timeslot);
    aa.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    timespin.setAdapter(aa);
    }