How To Validate Date In Dd/mm/yyyy Format In Editext In Android?

I have two edittexts. I want to validate date entered in first edittext when I switch to next edittext... Is it possible? I want to validate in dd/mm/yyyy format strictly.. please

Solution 1:

Step 1

youredittextname.addTextChangedListener(new TextWatcher() {

            @Override
            public void onTextChanged(CharSequence s, int start, int before,
                    int count) {
                // TODO Auto-generated method stub
            }
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count,
                    int after) {
                // TODO Auto-generated method stub
            }
            @Override
            public void afterTextChanged(Editable s) {
                // TODO Auto-generated method stubIs_Valid_date(name); // pass your EditText Obj here.
            }
        });

Step 2

Write a function.

publicvoidIs_Valid_date(EditText edt) throws NumberFormatException {
        if (edt.getText().toString().length() <= 0) {
            edt.setError("Accept number Only.");
            valid_name = null;
        } elseif (check your date format using simpledate format) {
            edt.setError("Accept Alphabets Only.");
            valid_name = null;
        } else {
            valid_name = edt.getText().toString();
        }

    }

If you need to know Validate of the date. Please visit this link.

http://www.mkyong.com/regular-expressions/how-to-validate-date-with-regular-expression/

Thank you.

Solution 2:

Use interface TextWatcher in Android. You have to override its methods:

• In onTextChanged() limit the length of text
• In afterTextChanged() use some good regular expression for date validation. It will be available from Google.

Solution 3:

privatestatic  final String  DATE_PATTERN="(0?[1-9]|[12][0-9]|3[01])/(0?[1-9]|1[012])/((19|20)\\d\\d)";
private Pattern pattern= Pattern.compile(DATE_PATTERN);
    

   public boolean isValidDate(final String date) {

        Matcher matcher = pattern.matcher(date);
        if (matcher.matches()) {
            matcher.reset();
            if (matcher.find()) {
                String day = matcher.group(1);
                String month = matcher.group(2);
                int year = Integer.parseInt(matcher.group(3));
                if (date.equals("31") && (month.equals("4")
                        || month.equals("6")
                        || month.equals("9")
                        || month.equals("11")
                        || month.equals("04")
                        || month.equals("06")
                        || month.equals("09"))) {
                    returnfalse;
                } elseif (month.equals("2") || month.equals("02")) {
                    if (year % 4 == 0) {
                        if (day.equals("30") || day.equals("31")) {
                            returnfalse;
                        } else {
                            returntrue;
                        }
                    } else {
                        if (day.equals("29") || day.equals("30") || day.equals("31")) {
                            returnfalse;
                        } else {
                            returntrue;
                        }
                    }
                } else {
                    returntrue;
                }
            } else {
                returnfalse;
            }
        } else {
            returnfalse;
        }
    }

Solution 4:

SimpleDateFormat can be of your help. You can look for tutorials or else visit here