Check if EditText is empty

Question

I have 5 EditTexts in android for users to input  I would like to know if I could have a method for checking all the 5 EditTexts if they are null  Is there any way to do this

User · Answer

this function work for me  private void checkempForm          EditText   allFields     field1 txt  field2 txt  field3 txt  field4 txt       List lt EditText gt  ErrorFields  new ArrayList lt EditText gt      empty Edit text arraylist             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  lt  ErrorFields size    i                                  EditText currentField   ErrorFields get i                   currentField setError  this field required                    currentField requestFocus

User · Answer

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    gt  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

User · Answer

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

User · Answer

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

User · Answer

if    usernameEditText getText       equals                 Really just another way

User · Answer

use TextUtils isEmpty  Text here    for single line code

User · Answer

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    gt  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

User · Answer

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

User · Answer

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

User · Answer

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

User · Answer

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

User · Answer

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

User · Answer

Try this  TextUtils isEmpty editText getText

User · Answer

private boolean isEmpty EditText etText        if  etText getText   toString   trim   length    gt  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

User · Answer

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

User · Answer

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

User · Answer

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

User · Answer

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

User · Answer

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

User · Answer

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

User · Answer

I used TextUtils for this   if  TextUtils isEmpty UsernameInfo getText           validationError   true      validationErrorMessage append getResources   getString R string error blank username

User · Answer

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

User · Answer

You can use length   from EditText   public boolean isEditTextEmpty EditText mInput      return mInput length      0

User · Answer

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

User · Answer

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

User · Answer

private boolean hasContent EditText et           return  et getText   toString   trim   length    gt  0

User · Answer

if TextUtils isEmpty textA getText                  showToast it s Null                you can use TextUtils isEmpty like my Example    Good luck

User · Answer

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

User · Answer

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  lt V extends View gt  boolean checkAll List lt V gt  views  ButterKnifeActions Check lt V gt  checker        boolean hasProperty   true      for  int i   0  i  lt  views size    i              hasProperty   checker checkViewProperty views get i   i   amp  amp  hasProperty            return hasProperty     public static  lt V extends View gt  boolean checkAny List lt V gt  views  ButterKnifeActions Check lt V gt  checker        boolean hasProperty   false      for  int i   0  i  lt  views size    i              hasProperty   checker checkViewProperty views get i   i     hasProperty            return hasProperty     public interface Check lt V extends View gt        boolean checkViewProperty V view  int index      public static final ButterKnifeActions Check lt EditText gt  EMPTY   new Check lt EditText gt           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 lt EditView gt  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

User · Answer

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

[android] Check if EditText is empty.

this function work for me

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