Changing the text in addTextChangedListener listener of edit text in android gives error

Question

Is it not possible to change the text of EditText in afterTextChanged
It gives the error below
Is there a specific way to change the text

code:

inputEmail.addTextChangedListener(object :TextWatcher{
            override fun afterTextChanged(s: Editable?) {
                inputEmail.setText("123456")
            }

            override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) {
            }

            override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) {
            }

        })

Error:

at com.caring2u.organizer.ui.fragments.screen.FrgBookingDetails$setEditTextListeners$4.afterTextChanged(FrgBookingDetails.kt:256)
        at android.widget.TextView.sendAfterTextChanged(TextView.java:9605)
        at android.widget.TextView.setText(TextView.java:5496)
        at android.widget.TextView.setText(TextView.java:5343)
        at android.widget.EditText.setText(EditText.java:113)
        at android.widget.TextView.setText(TextView.java:5300)

What type is the Error? Is it Error or Exception? – shkschneider Jan 08 '19 at 08:35 — shkschneider, Jan 08 '19 at 08:35

sushildlh · Accepted Answer · 2019-01-08T07:26:04.840

Changing EditText in TextWatcher is not good idea at all.

When you setting text to editText your TextWatcher will call again .

Note:- And it will goes in infinite loop.

Solution for this:-

Use string value as a result in TextWacher and change your ExitText outside text-watcher.

Using TextView you can do like this .....

Create TextView in you layout like below.

<FrameLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">


        <EditText
            android:id="@+id/edit_phone"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@drawable/border_edittext"
            android:gravity="center"
            android:inputType="number"
            android:padding="10dp"
            android:singleLine="true" />



            <TextView
                android:id="@+id/text_phone"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:background="@drawable/border_edittext"
                android:gravity="center"
                android:inputType="number"
                android:padding="10dp"
                android:singleLine="true" />



    </FrameLayout>

and use textWatcher and Update your TextView text inside onTextChange() method

Another Solution :- Create XMl like this

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:orientation="horizontal"
    android:layout_height="wrap_content">

    <EditText
        android:id="@+id/code"
        android:layout_width="50dp"
        android:layout_height="wrap_content"
        android:background="@drawable/border_edittext"
        android:gravity="center"
        android:inputType="number"
        android:padding="10dp"
        android:text=""
        android:singleLine="true" />

    <EditText
        android:id="@+id/mobile"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@drawable/border_edittext"
        android:gravity="center"
        android:inputType="number"
        android:padding="10dp"
        android:singleLine="true" />


</LinearLayout>

and update your editText with id code in your textWatcher of your editText with id mobile.

This seems true to me, not sure why this answer is getting negative votes. — TFennis, Jan 08 '19 at 06:43
Thats Exactly what is happening, But what is a workaround for this or is it not possible ? — Devrath, Jan 08 '19 at 06:44
If you're always setting your text to the same value, you could check in your text watcher to not set it if it's already at the correct value — TFennis, Jan 08 '19 at 06:44
@TFennis Some people are here to demotivate people. Who just down-vote and never mention why they did. We will not do anything in it. — sushildlh, Jan 08 '19 at 06:45
@Devrath what you trying to achieve? Please share may we can help in it. — sushildlh, Jan 08 '19 at 06:49
@SushilKumar .... I am changing a value in edit text, It is a phone no field .... Once someone modifies it, i need to append it with `+70` code along with the value user entered — Devrath, Jan 08 '19 at 07:00
try this one https://stackoverflow.com/a/20824665/5305430 or i have another one using TextView — sushildlh, Jan 08 '19 at 07:04

Changing the text in addTextChangedListener listener of edit text in android gives error

1 Answers1