MIUI中Material3 DropdownMenu弹出导致导航栏异常显示的解决方案

我有一个隐藏导航栏的纯Compose Activity，原本运行正常，但显示androidx.compose.material3.DropdownMenu时，导航栏会重新出现，关闭菜单后又隐藏。设置DropdownMenu(properties = PopupProperties(dismissOnBackPress = false))后，导航栏会在菜单出现时弹出，随后自行快速隐藏并伴随动画。

代码示例 #

@Composable
fun MenuSample(onSearch: () -> Unit) {
    var expanded by remember { mutableStateOf(false) }
    DropdownMenu(
        expanded = expanded,
        onDismissRequest = { expanded = false },
        properties = PopupProperties(dismissOnBackPress = false)
    ) {
        DropdownMenuItem(
            text = { Text("Search") },
            onClick = onSearch,
            leadingIcon = {
                Icon(
                    Icons.Outlined.Search,
                    contentDescription = null
                )
            })
    }
}

导航栏初始隐藏配置 #

class MyActivity : ComponentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        Companion.window = window
        hideNavBarAgain()
        setContent { MyJetpackContent() }
    }

    companion object { //for experimentation purposes
        var window: Window? = null

        fun hideNavBarAgain() {
            WindowInsetsControllerCompat(window!!, window!!.decorView).let { controller ->
                controller.hide(WindowInsetsCompat.Type.navigationBars())
                controller.systemBarsBehavior = WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE
            }
        }
    }
}

已尝试的方案 #

• dismiss-false：将properties = PopupProperties(dismissOnBackPress = false)作为DropdownMenu参数
• SideEffect：在MenuSample及外围添加SideEffect { MyActivity.hideNavBarAgain() }
• remCorSc.launch：在菜单触发点击lambda中执行rememberCoroutineScope.launch { MyActivity.hideNavBarAgain() }
• onPlaced：为DropdownMenu和DropdownMenuItem添加Modifier.onPlaced { MyActivity.hideNavBarAgain() }

实验矩阵（所有案例导航栏均在OnCreate()中隐藏） #

所有问题仅发生在MIUI 13上，纯净Android 14（Nothing OS）无此问题，仅靠Activity配置即可正常隐藏导航栏。请问如何在所有平台上正确阻止导航栏弹出？

内容的提问来源于stack exchange，提问作者multistackdeveloper