How to control EditText?

Question

I want to control EditText which only accepts int values. User enters numbers then I will add string (easy part). But I want to change it dynamically as user enters numbers. How can I achieve this?

I can do these:
user writes 61, EditText output is: 61 min.
user writes 1314, then EditText output is: 13 min 14 sec.

Here is the problem:
If user writes 7699, expected EditText output will be: 76 min 59 sec.

I think I need a controller thing like ArrayAdapter's getView() method. If user writes 1361 then I have to say to phone do not print "13 min 61 sec", just print "13 min 59 sec" in EditText. But I dont know how.

Solution I have tried: How to stop the edit text to add text,when the required format text is entered in it?

Any help will be appriciated.

score 0 · Answer 1 · answered Mar 17 '20 at 22:35

0

There is this function from DateUtils that you can use, you just need to give it a Long.

/**
     * Formats an elapsed time in the form "MM:SS" or "H:MM:SS"
     * for display on the call-in-progress screen.
     * @param elapsedSeconds the elapsed time in seconds.
     */
    public static String formatElapsedTime(long elapsedSeconds) {
        return formatElapsedTime(null, elapsedSeconds);
    }

to use it it's really easy, DateUtils.formatElapsedTime(time) and it'll print in String your time formatted by MM:SS

answered Mar 17 '20 at 22:35

Biscuit

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Thanks, but you didnt get what I asked. I want to correct the wrong input format dynamically, like: 65 second to 59 second because there cant be more than 59 seconds in a minute. – Muhammed Aydogan Mar 17 '20 at 22:42
what code are you using to display your formatted string ? You might wanna take a look at : https://stackoverflow.com/questions/625433/how-to-convert-milliseconds-to-x-mins-x-seconds-in-java – Biscuit Mar 17 '20 at 22:57

devMohaned · Accepted Answer · 2020-03-19T15:09:39.430

For allowing only numerical values, you can use android:inputType="number" in your EditText XML file

For tracing the value written in the EditText, you can listen to the changes of EditText using addTextChangedListener method, and TextWatcher interface

 Timer timer = new Timer();
    final long DELAY = 2000; // in ms
    field1 = (EditText)findViewById(R.id.field1);

    field1.addTextChangedListener(new TextWatcher() {

        public void afterTextChanged(final Editable s) {
            // Do whatever you want with the updated value
            timer = new Timer();
            timer.schedule(new TimerTask() {
                @Override
                public void run() {
                    // TODO: do what you need here
                    // you will probably need to use
                    // runOnUiThread(Runnable action) for some specific
                    // actions


                    runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            String minsString = "";
                            String secsString = "";
                            switch (s.length()) {
                                case 1:
                                    if (Integer.parseInt(String.valueOf(s)) == 0 || Integer.parseInt(String.valueOf(s)) == 1) {
                                        field1.setText(s + " min");
                                    } else {
                                        field1.setText(s + " mins");
                                    }
                                    break;
                                case 2:
                                    field1.setText(s + " mins");
                                    break;
                                case 3:
                                    minsString = s.toString().substring(0, 2);
                                    secsString = s.toString().substring(2);
                                    if (Integer.parseInt(secsString) > 59) {
                                        secsString = "59";
                                    }
                                    field1.setText(minsString + " mins " + secsString + " secs");
                                    break;
                                case 4:
                                    minsString = s.toString().substring(0, 2);
                                    secsString = s.toString().substring(2);
                                    if (Integer.parseInt(secsString) > 59) {
                                        secsString = "59";
                                    }
                                    field1.setText(minsString + " mins " + secsString + " secs");
                                    break;
                                default:
                                    break;
                            }
                        }
                    });

                }

            }, DELAY);

        }

        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        }

        public void onTextChanged(CharSequence s, int start, int before, int count) {
            if (timer != null)
                timer.cancel();
        }
    });

refering to timer solution to prevent the instance update of edit text

It is going to inner loop itself, never changes anything. Always calling itself again and again before changing text after running `field1.setText` method. I think we cannot write `setText` in `afterTextChanged` method — Muhammed Aydogan, Mar 19 '20 at 11:58
I've added timer to the solution to make sure to wait 2secs after user finished typing, and then we'll convert the time to mins & secs. I've updated the code above. — devMohaned, Mar 19 '20 at 15:10

How to control EditText?

2 Answers2