android edittext onchange listener

Question

I know a little bit about TextWatcher but that fires on every character you enter  I want a listener that fires whenever the user finishes editing  Is it possible  Also in TextWatcher I get an instance of Editable but I need an instance of EditText  How do I get that   EDIT  the second question is more important  Please answer that

User · Answer

I have done it using AutotextView   AutotextView textView    AutotextView  findViewById R id autotextview   textView addTextChangedListener new TextWatcher           Override     public void onTextChanged CharSequence cs  int arg1  int arg2  int arg3            seq   cs              Override     public void beforeTextChanged CharSequence s  int arg1  int arg2  int arg3                 Override     public void afterTextChanged Editable arg0            new SearchTask   execute seq toString   trim

User · Answer

The Watcher method fires on every character input  So  I built this code based on onFocusChange method   public static boolean comS String s1 String s2       if  s1 length    s2 length             int l s1 length            for  int i 0 i lt l i                 if  s1 charAt i   s2 charAt i  return false                    return true            return false     public void onChange final EditText EdTe  final Runnable FRun       class finalS String s          final finalS dat new finalS          EdTe setOnFocusChangeListener new OnFocusChangeListener                        Override         public void onFocusChange View v  boolean hasFocus                if  hasFocus   dat s    EdTe getText                 else if   comS dat s    EdTe getText      new Handler    post FRun                                 To using it  just call like this   onChange YourEditText  new Runnable   public void run           V  V    YOUR WORK HERE              You can ignore the comS function by replace the  comS dat s    EdTe getText    with  equal function  However the equal function itself some time work not correctly in run time   The onChange listener will remember old data of EditText when user focus typing  and then compare the new data when user lose focus or jump to other input  If comparing old String not same new String  it fires the work   If you only have 1 EditText  then u will need to make a ClearFocus function by making an Ultimate Secret Transparent Micro EditText  outside the windows  and request focus to it  then hide the keyboard via Import Method Manager

User · Answer

Anyone using ButterKnife  You can use like    OnTextChanged R id zip code  void onZipCodeTextChanged CharSequence zipCode  int start  int count  int after

User · Answer

As far as I can think bout it  there s only two ways you can do it  How can you know the user has finished writing a word  Either on focus lost  or clicking on an  ok  button  There s no way on my mind you can know the user pressed the last character     So call onFocusChange View v  boolean hasFocus  or add a button and a click listener to it

User · Answer

First  you can see if the user finished editing the text if the EditText loses focus or if the user presses the done button  this depends on your implementation and on what fits the best for you    Second  you can t get an EditText instance within the TextWatcher only if you have declared the EditText as an instance object  Even though you shouldn t edit the EditText within the TextWatcher because it is not safe   EDIT   To be able to get the EditText instance into your TextWatcher implementation  you should try something like this   public class YourClass extends Activity        private EditText yourEditText        Override     public void onCreate Bundle savedInstanceState            super onCreate savedInstanceState            setContentView R layout main           yourEditText    EditText  findViewById R id yourEditTextId            yourEditText addTextChangedListener new TextWatcher                  public void afterTextChanged Editable s                        you can call or do what you want with your EditText here                     yourEditText                                public void beforeTextChanged CharSequence s  int start  int count  int after                  public void onTextChanged CharSequence s  int start  int before  int count                           Note that the above sample might have some errors but I just wanted to show you an example

User · Answer

In Kotlin Android EditText listener is set using     val searchTo   EditText   findViewById R id searchTo     searchTo addTextChangedListener object   TextWatcher       override fun afterTextChanged s  Editable                you can call or do what you want with your EditText here             yourEditText               override fun beforeTextChanged s  CharSequence  start  Int  count  Int  after  Int         override fun onTextChanged s  CharSequence  start  Int  before  Int  count  Int

User · Answer

TextWatcher didn t work for me as it kept firing for every EditText and messing up each others values   Here is my solution   public class ConsultantTSView extends Activity                    Submit is called when I push submit button        I wanted to retrieve all EditText tsHours  values in my HoursList      public void submit View view            ListView TSDateListView    ListView  findViewById R id hoursList           String value     EditText  TSDateListView getChildAt 0  findViewById R id tsHours   getText   toString              Hence by using the getChildAt xx  method you can retrieve any item in the ListView and get the individual item using findViewById  And it will then give the most recent value

User · Answer

It was bothering me that implementing a listener for all of my EditText fields required me to have ugly  verbose code so I wrote the below class  May be useful to anyone stumbling upon this   public abstract class TextChangedListener lt T gt  implements TextWatcher       private T target       public TextChangedListener T target            this target   target              Override     public void beforeTextChanged CharSequence s  int start  int count  int after           Override     public void onTextChanged CharSequence s  int start  int before  int count           Override     public void afterTextChanged Editable s            this onTextChanged target  s              public abstract void onTextChanged T target  Editable s       Now implementing a listener is a little bit cleaner   editText addTextChangedListener new TextChangedListener lt EditText gt  editText                 Override             public void onTextChanged EditText target  Editable s                      Do stuff                             As for how often it fires  one could maybe implement a check to run their desired code in   Do stuff after a given a

User · Answer

myTextBox addTextChangedListener new TextWatcher             public void afterTextChanged Editable s            public void beforeTextChanged CharSequence s  int start  int count  int after           public void onTextChanged CharSequence s  int start  int before  int count           TextView myOutputBox    TextView  findViewById R id myOutputBox         myOutputBox setText s

[android] android edittext onchange listener

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