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Jetpack-Compose-Playground/docs/cookbook/textfield_changes.md

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+<!---
+This is the API of version 1.2.0
+-->
+# Handle changes to a TextField
+
+In some cases, it’s useful to get the value of a textfield every time the text in a text field changes. For example, you might want to build a search screen with autocomplete functionality where you want to update the results as the user types.
+
+Here is an example how you can do it with Compose:
+
+
+
+<p align="left">
+  <img src ="../../images/TextFieldDemo.png"  />
+</p>
+
+```kotlin
+@Composable
+fun TextFieldDemo() {
+    Column(Modifier.padding(16.dp)) {
+        val textState = remember { mutableStateOf(TextFieldValue()) }
+        TextField(
+                value = textState.value,
+                onValueChange = { textState.value = it }
+        )
+        Text("The textfield has this text: " + textState.value.text)
+    }
+}
+```
+
+The simplest approach is to supply an onValueChange() callback to a TextField. Whenever the text changes, the callback is invoked.
+
+In this example, every time the TextField changes, the new text value will be saved in a state and set to the TextField and the Text.
+
+## See also:
+* [Full Example Code]({{ site.samplefolder }}/material/textfield/TextFieldDemo.kt)