How to handle addTextChangedListener on two EditText together?

Question

Reququirement :

There are two EditText one is Username and another is Password. I am checking on both EditText has more than one character than button of Signup should enable.

Can anyone pls suggest me ?

etUsername.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) {
                int userName = s.length();
                if(userName >=1){
                    btnSignup.setEnabled(true);
                }

            }
        });
        etPswd = (EditText) findViewById(R.id.etpswd);
        etPswd.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) {
                int pswd = s.length();
                if(pswd >=1) {
                    btnsignup.setEnabled(true);
                }

            }
        });

etUsername.setOnKeyListener(this); 
etPswd.setOnKeyListener(this); 
private void trydisableLoginButton() 
{ 
if(etUsername.getText().toString().length() == 0 && etPswd.getText().toString().length() == 0)
{ btnLogin.setEnabled(false); 
} 
} 

@Override public boolean onKey(View v, int keyCode, KeyEvent event) 
{ 
if(keyCode == KeyEvent.KEYCODE_BACK) 
{
    trydisableLoginButton(); 
} 
   return false;
 }

Req. I am trying to disable the button on Back press of softKeyboard above code not working!

Add addTextChangedListener for both and check for condition if EditText1 is blank or not also check EditText2 blank or not , if both are not blank then enable button — IshRoid, Mar 11 '15 at 16:38
uname.addTextChangedListener(this); pswd.addTextChangedListener(this); and check on @Override public void afterTextChanged(Editable s) { int pswd = s.length(); if(pswd >=1) { signup.setEnabled(true); } Requirement : for two editText have the 1 character than only button should enable. I have to add two textwatcher and do this. Any other way pls suggest me. — TexGeek, Mar 11 '15 at 16:46
post your current code, for other suggestion, your code will help to look into deep — IshRoid, Mar 11 '15 at 16:55
I updated my answer replace your onKey code with backpressed i edited — IshRoid, Mar 12 '15 at 12:21
@Ishrat: I am pressing the back button of softkeyboard Not the hardware key — TexGeek, Mar 12 '15 at 13:04
if(keyCode == KeyEvent.KEYCODE_DEL) this will work for the back key of soft keyboard. — TexGeek, Mar 13 '15 at 04:47
http://stackoverflow.com/questions/29027953/back-key-or-delete-key-of-soft-keyboard-not-working-in-4-4-and-5-0?noredirect=1#comment46297608_29027953 @ Isharat can you look at this ? — TexGeek, Mar 13 '15 at 09:12
I am writing working code you,,for referred question.Please wait — IshRoid, Mar 13 '15 at 09:14

IshRoid · Accepted Answer · 2015-03-12T12:20:32.680

0

Create a function to enable signup button

 public void tryEnableSignUpButton(){

    if(etUsername.getText().toString().lenght>=1 && (etPswd .getText().toString().lenght>=1 )){

 btnSignup.setEnabled(true);
}

}

Now after each

            @Override
            public void afterTextChanged(Editable s) {
                int userName = s.length();
                if(userName >=1){
                   tryEnableSignUpButton();
                }

            }

@EDIT

@Override
    public void onBackPressed() {
      trydisableLoginButton(); 
      super.onBackPressed(); 
}

edited Mar 12 '15 at 12:20

answered Mar 11 '15 at 17:03

IshRoid

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I am glad to know my sol work for you,Thanks for accepting my answer, upvote will be very appreciated. – IshRoid Mar 11 '15 at 17:40
onCreate() { etUsername.addTextChangedListener(this);} At this line I am getting the null poniter exception Did you know this ? 03-12 Error :java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.loginsample/com.example.loginsample.MainActivity}: java.lang.NullPointerException – TexGeek Mar 12 '15 at 10:13
You must cast etUsername before adding listener, like etUsername=findViewByID(R.id.et_username); – IshRoid Mar 12 '15 at 10:16
etUsername = (EditText) findViewById(R.id.etusername); etUsername.addTextChangedListener(this); used this still problem I facing. – TexGeek Mar 12 '15 at 10:18
please post full log of exception or update your latest code of class – IshRoid Mar 12 '15 at 10:21
@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); etUsername = (EditText) findViewById(R.id.etusername); etUsername.addTextChangedListener(this); etPswd.addTextChangedListener(this); etUsername.setOnKeyListener(this); etPswd.setOnKeyListener(this); btnLogin = (Button) findViewById(R.id.btnLogin); } – TexGeek Mar 12 '15 at 10:25
Caused by: java.lang.NullPointerException 03-12 10:16:09.680: E/AndroidRuntime(16108): at com.example.loginsample.MainActivity.onCreate(MainActivity.java:23) – TexGeek Mar 12 '15 at 10:26
you not initilising password filed add this line also etPswd= (EditText) findViewById(R.id.pwd); – IshRoid Mar 12 '15 at 10:34
etUsername.setOnKeyListener(this); etPswd.setOnKeyListener(this); private void trydisableLoginButton() { if(etUsername.getText().toString().length() == 0 && etPswd.getText().toString().length() == 0){ btnLogin.setEnabled(false); } } @Override public boolean onKey(View v, int keyCode, KeyEvent event) { if(keyCode == KeyEvent.KEYCODE_BACK) { trydisableLoginButton(); } return false; } I am trying to disable the button – TexGeek Mar 12 '15 at 10:54
Friend ! It's too much in comments you should come to chat,,i will be there to help you,,,start chat now,,,also not post code in comment just update your question – IshRoid Mar 12 '15 at 11:06
I can not talk i have only 13 reputation. can someone upvote the question ? – TexGeek Mar 12 '15 at 11:34
Okay then, Update your answer not post your code in comment it is not understandable – IshRoid Mar 12 '15 at 11:41

How to handle addTextChangedListener on two EditText together?

1 Answers1