How do I check if my EditText fields are empty?

Question

I have 5 EditTexts in android. I would like to know if I could check if all 5 EditTexts are null. Is there any way to do this??

score 405 · Accepted Answer · answered Jun 09 '11 at 09:17

405

I did something like this once;

EditText usernameEditText = (EditText) findViewById(R.id.editUsername);
sUsername = usernameEditText.getText().toString();
if (sUsername.matches("")) {
    Toast.makeText(this, "You did not enter a username", Toast.LENGTH_SHORT).show();
    return;
}

answered Jun 09 '11 at 09:17

cvaldemar

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Hi! Thanks for your response! So, meaning, I ave 5 editTexts, I have to do that for 5 times?? – Winona Jun 09 '11 at 09:19
not necessarily, that could be a function – motoku Jun 09 '11 at 09:21
4

yes sorry, forgot that you had five. You could make a function that did the same thing and call it five times - or you could loop over the five EditText's. – cvaldemar Jun 09 '11 at 09:24
47

Sorry to be pedantic, but you do not write functions in java they are called methods... – WiZarD Jun 25 '13 at 18:31
1

if EditText.setInputType(InputType.TYPE_CLASS_NUMBER); number this is not working – Zala Janaksinh Jul 20 '13 at 06:33
1

@cvaldemar It doesn't work if the user put space on the edittext.. – AndroidDev Aug 07 '13 at 11:41
74

y'all making it harder than it needs to be: TextUtils.isEmpty(editText.getText()); – martyglaubitz Sep 02 '14 at 13:33
4

I usually use if (usernameEditText.getText().toString().toString().isEmpty()) – Daniel Jonker Sep 28 '14 at 21:25
It does not work when user put a space – Miral Sarwar Jul 01 '15 at 09:31
1

@MiralSarwar Try checking the `EditText` value a bit like this: `editText.getText().toString().trim()` (note that I added `.trim()` which should remove additional spaces). – Farbod Salamat-Zadeh Aug 09 '15 at 17:35
the simplest yet the most reliable way! – ejmtv Jun 27 '17 at 06:57
and I think starting with API 26, class casting is redundant as of date. – Mohan Wijesena Dec 10 '17 at 03:09
@martyglaubitz - your solution worked perfectly for me thanks – chargerstriker Feb 04 '18 at 00:38
https://stackoverflow.com/questions/61766882/edittext-multiple-edit-fill-check can You help me out with my problem ?? – Sunny May 13 '20 at 05:12
Kotlin: if(TextUtils.isEmpty(usernameEditText.text.toString().trim())) { // do something } – Fahmi Eshaq Dec 04 '22 at 16:42

score 200 · Answer 2 · edited May 23 '17 at 11:54

200

private boolean isEmpty(EditText etText) {
    if (etText.getText().toString().trim().length() > 0) 
        return false;

    return true;
}

OR As Per audrius

  private boolean isEmpty(EditText etText) {
        return etText.getText().toString().trim().length() == 0;
    }

If function return false means edittext is not empty and return true means edittext is empty...

edited May 23 '17 at 11:54

Community

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answered Jun 09 '11 at 09:50

SBJ

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+1 Checking length is better than checking for empty string IMHO. It would help to trim string before checking length so that whitespace characters wouldn't be counted. Btw, any particular reason of not using `return etText.getText().toString().trim().length() == 0` instead of true/false branches? – Audrius Jun 09 '11 at 09:58
1

well I guess code readability and maintainability... – WiZarD Jun 25 '13 at 18:28
if EditText.setInputType(InputType.TYPE_CLASS_NUMBER); number then use this. – Zala Janaksinh Jul 20 '13 at 06:32
Yes its working because its depend on length... – SBJ Jul 22 '13 at 10:29
`private Boolean isEmpty(EditText etText){return etText.Text.ToString().Trim().Length == 0;}` VS 2019 – Siddharth Rout May 09 '20 at 17:32

MilapTank · Answer 3 · 2016-04-20T10:34:01.180

169

For validating EditText use EditText#setError method for show error and for checking empty or null value use inbuilt android class TextUtils.isEmpty(strVar) which return true if strVar is null or zero length

EditText etUserName = (EditText) findViewById(R.id.txtUsername);
String strUserName = etUserName.getText().toString();

 if(TextUtils.isEmpty(strUserName)) {
    etUserName.setError("Your message");
    return;
 }

Image taken from Google search

edited Apr 20 '16 at 10:34

answered Aug 06 '14 at 09:37

MilapTank

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you should add another `)` in the if statement. – ʍѳђઽ૯ท Jun 23 '15 at 07:18
1

@Androidenthusiasts thanks for pointing it my typo mistake i have update my answer :) – MilapTank Jul 07 '15 at 05:29
Couldnt understand the second field ""usernameEditText"" "String strUserName = usernameEditText.getText().toString(); " where does it declared? – Samir Apr 20 '16 at 08:35
@Sam its my typo i have update my answer `usernameEditText` is `EditText` object and now its renamed to `etUserName` – MilapTank Apr 20 '16 at 10:35
1

`.toString();` is not required – MariuszS Apr 27 '16 at 08:40
what purpose of `return;` is? – nandur Aug 05 '20 at 08:20
1

@nandur93 error shown to user and stop going further like save button functionality – MilapTank Aug 07 '20 at 04:29
@MilapTank thanks, i just don't get it why Android Studio keeps suggesting to remove that `return;` code. – nandur Aug 07 '20 at 04:38
Ohk it my requirement so I have added if you don't need then you can remove – MilapTank Aug 08 '20 at 05:15

score 39 · Answer 4 · edited Aug 10 '16 at 21:34

39

try this :

EditText txtUserName = (EditText) findViewById(R.id.txtUsername);
String strUserName = usernameEditText.getText().toString();
if (strUserName.trim().equals("")) {
    Toast.makeText(this, "plz enter your name ", Toast.LENGTH_SHORT).show();
    return;
}

or use the TextUtils class like this :

if(TextUtils.isEmpty(strUserName)) {
    Toast.makeText(this, "plz enter your name ", Toast.LENGTH_SHORT).show();
    return;
}

edited Aug 10 '16 at 21:34

Kamil Gosciminski

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answered Jun 09 '11 at 09:21

Houcine

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3

...this is the best way to do this. Other examples allow input that is not being accounted for. – dell116 Mar 16 '12 at 17:25

Qw4z1 · Answer 5 · 2014-08-22T07:52:51.063

31

Way late to the party here, but I just have to add Android's own TextUtils.isEmpty(CharSequence str)

Returns true if the string is null or 0-length

So if you put your five EditTexts in a list, the full code would be:

for(EditText edit : editTextList){
    if(TextUtils.isEmpty(edit.getText()){
        // EditText was empty
        // Do something fancy
    }
}

edited Aug 22 '14 at 07:52

answered Nov 27 '12 at 10:20

Qw4z1

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isEmpty() doesnt check for blank space , try entering one space – Hunt Mar 17 '13 at 12:43
3

@Hunt That's true, but then it would not be empty or null anymore. Maybe TextUtils.isEmpty(sUserName.trim()) would be appropriate, to remove all blanks, just in case the user has entered one or several blank spaces? – Qw4z1 Mar 17 '13 at 14:18
`isEmpty()` takes a `CharSequence`, which `Editable` extends, so there's no need to call `.toString()` on it. – karl Aug 20 '14 at 23:04
@karl Good point! Updated my answer. – Qw4z1 Aug 22 '14 at 07:53

score 22 · Answer 6 · answered Jul 08 '14 at 06:21

22

Other answers are correct but do it in a short way like

if(editText.getText().toString().isEmpty()) {
     // editText is empty
} else {
     // editText is not empty
}

answered Jul 08 '14 at 06:21

Zar E Ahmer

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score 14 · Answer 7 · edited Feb 28 '18 at 13:56

14

Try this

TextUtils.isEmpty(editText.getText());

edited Feb 28 '18 at 13:56

Gowthaman M

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answered Jun 10 '14 at 17:11

martyglaubitz

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score 8 · Answer 8 · edited Feb 28 '18 at 13:54

8

You can use length() from EditText.

public boolean isEditTextEmpty(EditText mInput){
   return mInput.length() == 0;
}

edited Feb 28 '18 at 13:54

Gowthaman M

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answered Jan 07 '13 at 20:37

JPMagalhaes

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score 7 · Answer 9 · edited May 23 '17 at 11:54

I usually do what SBJ proposes, but the other way around. I simply find it easier to understand my code by checking for positive results instead of double negatives. You might be asking for how to check for empty EdiTexts, but what you really want to know is if it has any content and not that it is not empty.

Like so:

private boolean hasContent(EditText et) {
    // Always assume false until proven otherwise
    boolean bHasContent = false; 

    if (et.getText().toString().trim().length() > 0) {
        // Got content
        bHasContent = true;
    }
    return bHasContent;
}

As SBJ I prefer to return "has no content" (or false) as default to avoid exceptions because I borked my content-check. That way you will be absolutely certain that a true has been "approved" by your checks.

I also think the if calling it looks a bit cleaner as well:

if (hasContent(myEditText)) {
// Act upon content
} else {
// Got no content!
}

It is very much dependent on preference, but i find this easier to read. :)

score 7 · Answer 10 · answered Aug 21 '13 at 23:18

Why not just disable the button if EditText is empty? IMHO This looks more professional:

        final EditText txtFrecuencia = (EditText) findViewById(R.id.txtFrecuencia);  
        final ToggleButton toggle = (ToggleButton) findViewById(R.id.toggleStartStop);
        txtFrecuencia.addTextChangedListener(new TextWatcher() {
        @Override
        public void afterTextChanged(Editable s) {
            toggle.setEnabled(txtFrecuencia.length() > 0);
        }

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

        @Override
        public void onTextChanged(CharSequence s, int start, int before,
                int count) {

        }
       });

Disabling user interfaces is not recommended by Joel Spolsky in [his article](https://www.joelonsoftware.com/2008/07/01/dont-hide-or-disable-menu-items/). — Second Person Shooter, Jul 24 '21 at 21:02

score 4 · Answer 11 · answered Mar 21 '14 at 19:27

I use this method, that uses trim() to avoid blank spaces :

EditText myEditText = (EditText) findViewById(R.id.editUsername);
if ("".equals(myEditText.getText().toString().trim()) {
    Toast.makeText(this, "You did not enter a value!", Toast.LENGTH_LONG).show();
    return;
}

an example if you have several EditText´s

if (("".equals(edtUser.getText().toString().trim()) || "".equals(edtPassword.getText().toString().trim()))){
        Toast.makeText(this, "a value is missing!", Toast.LENGTH_LONG).show();
        return;
}

score 4 · Answer 12 · answered Jul 11 '16 at 07:40

4

if(TextUtils.isEmpty(textA.getText())){
            showToast(it's Null");
        }

you can use TextUtils.isEmpty like my Example ! Good luck

answered Jul 11 '16 at 07:40

Erik Chau

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5

Emiliano Spirito · Answer 13 · 2018-08-28T07:37:32.277

4

with this short code you can delete empty space at start and end of the string. If the string is "" return the message "error" else you ave a string

EditText user = findViewById(R.id.user); 
userString = user.getText().toString().trim(); 
if (userString.matches("")) {
    Toast.makeText(this, "Error", Toast.LENGTH_SHORT).show();
    return; 
}else{
     Toast.makeText(this, "Ok", Toast.LENGTH_SHORT).show();
}

edited Aug 28 '18 at 07:37

answered Aug 24 '18 at 08:19

Emiliano Spirito

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Please add a short explanation of your code. – Terru_theTerror Aug 24 '18 at 10:38
https://stackoverflow.com/questions/61766882/edittext-multiple-edit-fill-check can You help me out with my problem ?? – Sunny May 13 '20 at 05:13

score 3 · Answer 14 · edited May 15 '13 at 04:54

3

private boolean hasContent(EditText et) {
       return (et.getText().toString().trim().length() > 0);
}

edited May 15 '13 at 04:54

Edwin Alex

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answered May 15 '13 at 04:35

LMK

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score 3 · Answer 15 · edited Jun 30 '14 at 04:37

3

I used TextUtils for this:

if (TextUtils.isEmpty(UsernameInfo.getText())) {
    validationError = true;
    validationErrorMessage.append(getResources().getString(R.string.error_blank_username));
}

edited Jun 30 '14 at 04:37

nstCactus

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answered Jun 30 '14 at 04:15

wildapps

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score 2 · Answer 16 · answered Feb 20 '14 at 10:33

You can also check all the EditText Strings in one If condition: like this

if (mString.matches("") || fString.matches("") || gender==null || docString.matches("") || dString.matches("")) {
                Toast.makeText(WriteActivity.this,"Data Incomplete", Toast.LENGTH_SHORT).show();
            }

score 2 · Answer 17 · answered Oct 08 '14 at 20:00

I wanted to do something similar. But getting the text value from edit text and comparing it like (str=="") wasn't working for me. So better option was:

EditText eText = (EditText) findViewById(R.id.etext);

if (etext.getText().length() == 0)
{//do what you want }

Worked like a charm.

score 2 · Answer 18 · answered Oct 16 '15 at 09:32

Try this out with using If ELSE If conditions. You can validate your editText fields easily.

 if(TextUtils.isEmpty(username)) {
                userNameView.setError("User Name Is Essential");
                return;
         } else  if(TextUtils.isEmpty(phone)) {
                phoneView.setError("Please Enter Your Phone Number");
                return;
            }

score 2 · Answer 19 · answered Jun 03 '17 at 15:29

2

You could call this function for each of the edit texts:

public boolean isEmpty(EditText editText) {
    boolean isEmptyResult = false;
    if (editText.getText().length() == 0) {
        isEmptyResult = true;
    }
    return isEmptyResult;
}

answered Jun 03 '17 at 15:29

dreinoso

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score 1 · Answer 20 · edited Aug 20 '13 at 06:29

1

EditText txtUserID = (EditText) findViewById(R.id.txtUserID);

String UserID = txtUserID.getText().toString();

if (UserID.equals("")) 

{
    Log.d("value","null");
}

You will see the message in LogCat....

edited Aug 20 '13 at 06:29

Ankur

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answered Aug 20 '13 at 06:07

Jothi

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score 1 · Answer 21 · edited Jun 11 '14 at 08:47

"check out this i m sure you will like it."

log_in.setOnClickListener(new OnClickListener() {

    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub
        username=user_name.getText().toString();
        password=pass_word.getText().toString();
        if(username.equals(""))
        {
            user_name.setError("Enter username");
        }
        else if(password.equals(""))
        {
            pass_word.setError("Enter your password");
        }
        else
        {
            Intent intent=new Intent(MainActivity.this,Scan_QRActivity.class);
            startActivity(intent);
        }
    }
});

score 1 · Answer 22 · answered Jul 16 '15 at 13:11

1

use TextUtils.isEmpty("Text here"); for single line code

answered Jul 16 '15 at 13:11

Anand Savjani

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score 1 · Answer 23 · edited Aug 25 '21 at 11:49

This function work for me

private void checkForm() {
    EditText[] allFields = {
        field1_txt,
        field2_txt,
        field3_txt,
        field4_txt
    };
    
    List < EditText > ErrorFields = new ArrayList < EditText > (); 

    for (EditText edit: allFields) {
        if (TextUtils.isEmpty(edit.getText())) {

            // EditText was empty
            ErrorFields.add(edit); //add empty Edittext only in this ArayList
            
            for (int i = 0; i < ErrorFields.size(); i++) {
                EditText currentField = ErrorFields.get(i);
                currentField.setError("this field required");
                currentField.requestFocus();
            }
        }
    }
}

score 1 · Answer 24 · answered Jun 24 '18 at 00:22

The following works for me all in one statement:

if(searchText.getText().toString().equals("")) 
    Log.d("MY_LOG", "Empty");

First I retrieve a text from the EditText and then convert it to a string and finally comparing it with "" using .equals method.

score 0 · Answer 25 · edited Sep 15 '12 at 12:35

0

EditText edt=(EditText)findViewById(R.id.Edt);

String data=edt.getText().toString();

if(data=="" || data==null){

 Log.e("edit text is null?","yes");

}

else {

 Log.e("edit text is null?","no");

}

do like this for all five edit text

edited Sep 15 '12 at 12:35

Bill the Lizard

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answered Sep 14 '12 at 07:36

Aamirkhan

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score 0 · Answer 26 · edited Nov 06 '16 at 22:06

0

To editText is empty try another this simple way :

String star = editText.getText().toString();

if (star.equalsIgnoreCase("")) {
  Toast.makeText(getApplicationContext(), "Please Set start no", Toast.LENGTH_LONG).show();
}

edited Nov 06 '16 at 22:06

lostAtSeaJoshua

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answered Jul 15 '14 at 12:07

Guru

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why ignore case?! – Tima Jan 09 '18 at 21:26

score 0 · Answer 27 · answered May 26 '15 at 02:34

You can use setOnFocusChangeListener , it will check when focus change

        txt_membername.setOnFocusChangeListener(new OnFocusChangeListener() {

        @Override
        public void onFocusChange(View arg0, boolean arg1) {
            if (arg1) {
                //do something
            } else {
                if (txt_membername.getText().toString().length() == 0) {
                    txt_membername
                            .setError("Member name is not empty, Plz!");
                }
            }
        }
    });

score 0 · Answer 28 · answered Aug 10 '15 at 12:17

0

if ( (usernameEditText.getText()+"").equals("") ) { 
    // Really just another way
}

answered Aug 10 '15 at 12:17

Sydwell

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score 0 · Answer 29 · answered Aug 19 '15 at 16:54

I prefer using ButterKnife list binding and then applying actions on the list. For example, with the case of EditTexts, I have the following custom actions defined in a utility class (in this case ButterKnifeActions)

public static <V extends View> boolean checkAll(List<V> views, ButterKnifeActions.Check<V> checker) {
    boolean hasProperty = true;
    for (int i = 0; i < views.size(); i++) {
        hasProperty = checker.checkViewProperty(views.get(i), i) && hasProperty;
    }
    return hasProperty;
}

public static <V extends View> boolean checkAny(List<V> views, ButterKnifeActions.Check<V> checker) {
    boolean hasProperty = false;
    for (int i = 0; i < views.size(); i++) {
        hasProperty = checker.checkViewProperty(views.get(i), i) || hasProperty;
    }
    return hasProperty;
}

public interface Check<V extends View> {
    boolean checkViewProperty(V view, int index);
}

public static final ButterKnifeActions.Check<EditText> EMPTY = new Check<EditText>() {
    @Override
    public boolean checkViewProperty(EditText view, int index) {
        return TextUtils.isEmpty(view.getText());
    }
};

And in the view code, I bind the EditTexts to a list and apply the actions when I need to check the views.

@Bind({R.id.edit1, R.id.edit2, R.id.edit3, R.id.edit4, R.id.edit5}) List<EditView> edits;
...
if (ButterKnifeActions.checkAny(edits, ButterKnifeActions.EMPTY)) {
    Toast.makeText(getContext(), "Please fill in all fields", Toast.LENGTH_SHORT).show();
}

And of course this pattern is extendable to checking any property on any number of views. The only downside, if you can call it that, is the redundancy of views. Meaning, to use those EditTexts, you would have to bind them to single variables as well so that you can reference them by name or you would have to reference them by position in the list (edits.get(0), etc.). Personally, I just bind each of them twice, once to a single variable and once to a the list and use whichever is appropriate.

score 0 · Answer 30 · edited Mar 02 '18 at 21:46

Try this out: its in Kotlin

//button from xml
button.setOnClickListener{                                         
    val new=addText.text.toString()//addText is an EditText
    if(new=isNotEmpty())
    {
         //do something
    }
    else{
        new.setError("Enter some msg")
        //or
        Toast.makeText(applicationContext, "Enter some message ", Toast.LENGTH_SHORT).show()
    }
}

Thank you

How do I check if my EditText fields are empty?

30 Answers30

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