'when setText on editText TextWatcher.onTextChanged not called

Whenever EditText string is changed, onTextChanged is called.

Now when I start a new Activity and send data through Bundle, onTextChanged is not called. 

if( getIntent().getExtras() != null) {
    Bundle b = getIntent().getExtras();
    int value = -1;

    if(b != null)
        value = b.getInt("key");
    edit1.setText("Mywords:");
}

How can I call it ?

javaandroidinner-classesandroid-textwatcher


Solution 1:[1]

Make sure you are subscribing with TextWatcher before setText called.

Solution 2:[2]

For some reason, the method addTextChangedListener is not called for me.

However the method doBeforeTextChanged, doOnTextChanged and doAfterTextChanged worked perfectly :

amountTextField.doBeforeTextChanged { text, start, count, after ->
    Log.d(TAG, "beforeTextChange.") // OK, called
}
amountTextField.doOnTextChanged { text, start, before, count ->
    Log.d(TAG,  "onTextChanged.") // OK, called
}
amountTextField.doAfterTextChanged {
    Log.d(TAG, "afterTextChanged.") // OK, called
}
amountTextField.addTextChangedListener {
    object:  TextWatcher {
        override fun beforeTextChanged(p0: CharSequence?, p1: Int, p2: Int, p3: Int) {
            Log.d(TAG, "beforeTextChange.") // NOK, not called
        }

        override fun onTextChanged(p0: CharSequence?, p1: Int, p2: Int, p3: Int) {
            Log.d(TAG,  "onTextChanged.") // NOK, not called
        }

        override fun afterTextChanged(p0: Editable?) {
            Log.d(TAG,  "onTextChanged.") // NOK, not called
        }

    } }

By the way, the result was always the same : whether I set any text to my EidtText or not, whether after or before I set any text.

Solution 3:[3]

Try the following:

edit1.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) {
        }
    });

Reference: android on Text Change Listener

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 Reaz Murshed
Solution 2 Jérémy Valensi
Solution 3 Community

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