How to use EditText or TextInput widget in Jetpack compose?

user_4613320 0
Viewed 21786

I was exploring Jetpack compose by trying a few widgets like Image and EditText.

For text input, it has EditableText. I have tried below code but it is not showing anything in UI

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            loadUi()
        }
    }

    @Composable
    fun loadUi() {
        CraneWrapper {
            MaterialTheme {
                val state = +state { EditorState("") }
                EditableText(
                    value = state.value,
                    onValueChange = { state.value = it },
                    editorStyle = EditorStyle(
                        textStyle = TextStyle(
                            fontSize = (50f)
                        )
                    )
                )
            }
        }
    }
}

What I am missing here? Any help would be appreciated!

android-compose-textfield androidx android-jetpack-compose android
5 Answers

As stated in Gabriele Mariotti's answer, this is the right way to do it:

var text by rememberSaveable { mutableStateOf("Text") }

TextField(
    value = text,
    onValueChange = {
        text = it
    },
    label = { Text("Label") }
)

If however, you encounter an error that states:

Type 'TypeVariable(T)' has no method 'getValue(MainActivity, KProperty<*>)' and thus it cannot serve as a delegate

Simply add these two imports to your file and you'd be good:

import androidx.compose.runtime.getValue
import androidx.compose.runtime.setValue
user_56707520
user_20165620

Sorry for late answer. API was changed a bit, so your code now should look like this:

@Composable
fun loadUi() {
    val state = +state { EditorModel("smth") }
    TextField(
        value = state.value,
        onValueChange = { state.value = it },
        editorStyle = EditorStyle(
            textStyle = TextStyle(
                fontSize = (50.sp)
            )
        )
    )
}

Also you could miss widget, because it doesnt have default background and is almost invisible by default if you have empty string

user_38913760 
TextField(
    value = state.value,
    onValueChange = { new ->
        state.value = if (new.text.any { it == '\n' }) {
            state.value
        } else {
            new
        }
    },
    keyboardType = KeyboardType.Text,
    imeAction = ImeAction.Search,
    textStyle = TextStyle(color = Color.DarkGray),
    onImeActionPerformed = onImeActionPerformed
)
user_23442480 
 val state = +state {
                    EditorModel("Edit Text")
                }
                TextField(
                    value = state.value,
                    onValueChange = {
                        state.value = it
                    },
                    textStyle = TextStyle(
                        fontSize = (30.sp),
                        color = Color.DarkGray
                    ),
                    keyboardType = KeyboardType.Text
                )

Try this one.

user_71558490
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