IssueTracker

Problem

Dialog size doesn't seem to update, after it's contents are recomposed.

Background

I have a dialog with a ViewModel, that fetches some data. After data is fetched, it updates dialog content and content's size.

Versions

• Jetpack Compose release version: 1.0.0
• Android Studio Build: Arctic Fox 2020.3.1 RC1
• Kotlin version: 1.5.10

Example

import androidx.compose.foundation.background
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.layout.wrapContentSize
import androidx.compose.material.Button
import androidx.compose.material.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.LaunchedEffect
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.setValue
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.unit.dp
import androidx.compose.ui.window.Dialog
import kotlinx.coroutines.delay

@Composable
fun Banana() {
    var isShown by remember { mutableStateOf(false) }

    Button(onClick = { isShown = true }) {
        Text("Open")
    }

    if (isShown) {
        MyDialog {
            isShown = false
        }
    }
}

@Composable
private fun MyDialog(onDismiss: () -> Unit) {
    var height by remember { mutableStateOf(10.dp) }

    Dialog(
        content = {
            Column(modifier = Modifier
                .wrapContentSize()
                .background(Color.White)
                .padding(10.dp)
            ) {
                LaunchedEffect(key1 = Unit) {
                    delay(500) // Simulate loading
                    height = 200.dp
                }

                Box(
                    modifier = Modifier
                        .size(height)
                        .background(Color.Red)
                )
            }
        },
        onDismissRequest = {
            height = 10.dp // Reset
            onDismiss()
        },
    )
}