material-components / material-components/material-components-android

TextInputEditText has no valueAttrChanged for compiling twoWayDatabinding

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Help wanted Widget: TextField
Dominant language
Java
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Description

**Description:** I can't use two way data binding with TextInputEditText when using a MutableLiveData
Getting "Could not find event 'valueAttrChanged' on View type 'com.google.android.material.textfield.TextInputEditText'"

**Expected behavior:** I don't understand why that would be intended. If it is, how should I work around this issue?

**Source code:**
```
//ViewModel
var amount = MutableLiveData()

//Adapters

@BindingAdapter("value")
fun setVal(editText: EditText, newVal: Double) {
val currentValue = editText.text.toString()
try {
if (currentValue.isNotEmpty()) {
if (java.lang.Double.valueOf(currentValue) != newVal) {
val decimalFormat = DecimalFormat("#.##")
val value: String = decimalFormat.format(newVal)
editText.append("$value")
}
}
} catch (exception: Exception) { //
Timber.i(exception)// Do nothing
}
}

@InverseBindingAdapter(attribute = "value")
fun getVal(editText: EditText) : Double {
val currentValue = editText.text.toString()
return currentValue.toDouble()
}`

//XML
`

`


```
**Android API version:** 3.6.1

**Material Library version:** 1.1.0

**Device:** Pixel API 29

Thank you in advance

Contributor guide

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First steps

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  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

The issue names TextInputEditText, a custom value BindingAdapter, an InverseBindingAdapter, and app:value two-way binding, but no repository files or tests. Start by reproducing the valueAttrChanged compilation error with Android API 29 and Material Library 1.1.0, then inspect the component's data-binding integration. Done means confirming the supported behavior and documenting or testing the resulting fix or workaround.

Written by the indexing model from the issue text.

Assessment

Tech stack
android, kotlin
Domain
mobile
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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