I need to get variable from another class to another

Question

I need to get the variable date from the class SetAlarmActivity to the MainActivity

SetAlarmActivity

     }
    });
    tvSTART.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Calendar mcurrentTime = Calendar.getInstance();
            int hour = mcurrentTime.get(Calendar.HOUR_OF_DAY);
            int minute = mcurrentTime.get(Calendar.MINUTE);
            TimePickerDialog mTimePicker;
            mTimePicker = new TimePickerDialog(SetAlarmActivity.this, new TimePickerDialog.OnTimeSetListener() {
                @Override
                public void onTimeSet(TimePicker timePicker, int selectedHour, int selectedMinute) {
                    tvSTART.setText( selectedHour + ":" + selectedMinute);
                    tv_START = ( selectedHour + ":" + selectedMinute);
                    DateFormat format = new SimpleDateFormat("h:mm", Locale.ENGLISH);
                    try {
                       Date date = format.parse(tv_START);
                    } catch (ParseException e) {
                        e.printStackTrace();
                    }
                }
            }, hour, minute, true);//Yes 24 hour time
            mTimePicker.setTitle("Select Start Time");
            mTimePicker.show();

        }
    });

And depending on what you're doing, you may want to use [startActivityForResult()](https://stackoverflow.com/questions/18243515/android-going-back-to-previous-activity-with-different-intent-value/18243541#18243541) in main — codeMagic, Sep 05 '17 at 20:54
Voted to reopen because the linked question appears to be about passing data _up_ the activity stack, but this user's question seems more likely to regard passing data _down_ the activity stack (which would be solved by using `startActivityForResult()`, as you mentioned). — Ben P., Sep 05 '17 at 21:04

score 0 · Answer 1 · answered Sep 05 '17 at 20:49

0

You need to declare an interface, and implement the method.

Use something like this Android: TimePickerDialog - TimePickerDialog.OnTimeSetListener

I hope this help.

answered Sep 05 '17 at 20:49

Cristian Cardoso

665
6
11

score -2 · Answer 2 · answered Sep 05 '17 at 20:49

-2

Try to make your variable date public static so that you can access it within another class such as MainActivity.

answered Sep 05 '17 at 20:49

Bradzer

146
2
10

1

This is so wrong on so many levels. Please don't give advice on subjects you are not familiar with. – Hovercraft Full Of Eels Sep 05 '17 at 20:59

I need to get variable from another class to another

2 Answers2