How can I know when an EditText loses focus

Question

I need to catch when an EditText loses focus  I ve searched other questions but I didn t find an answer   I used OnFocusChangeListener like this  OnFocusChangeListener foco   new OnFocusChangeListener           Override     public void onFocusChange View v  boolean hasFocus               TODO Auto-generated method stub             But  it doesn t work for me

User · Accepted Answer

Implement onFocusChange of setOnFocusChangeListener and there s a boolean parameter for hasFocus  When this is false  you ve lost focus to another control    EditText txtEdit    EditText  findViewById R id edittxt     txtEdit setOnFocusChangeListener new OnFocusChangeListener                        Override         public void onFocusChange View v  boolean hasFocus                if   hasFocus                      code to execute when EditText loses focus

User · Answer

Its Working Properly  EditText et mobile   EditText  findViewById R id edittxt    et mobile setOnFocusChangeListener new OnFocusChangeListener                    Override     public void onFocusChange View v  boolean hasFocus            if   hasFocus                   code to execute when EditText loses focus             if  et mobile getText   toString   trim   length      0                    CommonMethod showAlert  Please enter name   FeedbackSubmtActivity this                                        public static void showAlert String message  Activity context         final AlertDialog Builder builder   new AlertDialog Builder context       builder setMessage message  setCancelable false               setPositiveButton  OK   new DialogInterface OnClickListener                     public void onClick DialogInterface dialog  int id                                           try           builder show          catch  Exception e            e printStackTrace

User · Answer

Using Java 8 lambda expression   editText setOnFocusChangeListener  v  hasFocus  - gt        if  hasFocus            String value   String valueOf  editText getText

User · Answer

Have your Activity implement OnFocusChangeListener   if you want a factorized use of this interface  example   public class Shops extends AppCompatActivity implements View OnFocusChangeListener    In your OnCreate you can add a listener for example   editTextResearch setOnFocusChangeListener this   editTextMyWords setOnFocusChangeListener this   editTextPhone setOnFocusChangeListener this     then android studio will prompt you to add the method from the interface  accept it    it will be like    Override public void onFocusChange View v  boolean hasFocus       todo your code here        and as you ve got a factorized code  you ll just have to do that    Override public void onFocusChange View v  boolean hasFocus       if  hasFocus            editTextResearch setText              editTextMyWords setText              editTextPhone setText                if   hasFocus           editTextResearch setText  BlaBlaBla            editTextMyWords setText   One Two Tree             editTextPhone setText    your phone here                 anything you code in the  hasFocus is for the behavior of the item that loses focus  that should do the trick  But beware that in such state  the change of focus might overwrite the user s entries

User · Answer

Kotlin way  editText setOnFocusChangeListener      hasFocus - gt      if   hasFocus

[android] How can I know when an EditText loses focus?

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