我的拉动刷新在 WebView Compose 中不起作用

Question

我有一个简单的

WebPageView.kt

，我可以在我的应用程序中嵌入 Web 视图的其他页面中调用它。它与 LinearProgressIndicatorProgress 一起工作得很好，可以显示每个网页的进度条。

但是，当我尝试添加 PullRefreshIndicator 时，拉动刷新似乎不起作用。

我想知道我的代码有什么问题。

WebPageView.kt

@OptIn(ExperimentalMaterial3Api::class, ExperimentalMaterialApi::class)
@Composable
fun WebViewPage(url: String) {
    val context = LocalContext.current

    var isRefreshing by remember { mutableStateOf(false) }


    //WEB-VIEW


    val webView = remember(context) {
        WebView(context).apply {
            webViewClient = WebViewClient()
            loadUrl(url)
            settings.javaScriptEnabled = true
            settings.useWideViewPort = true
            setBackgroundColor(0x000000)
            webChromeClient = object : WebChromeClient() {
                override fun onProgressChanged(view: WebView?, newProgress: Int) {
                    LinearProgressIndicatorProgress = newProgress / 100f
                }
            }
        }
    }

    val pullRefreshState = rememberPullRefreshState(
        refreshing = isRefreshing,
        onRefresh = {
            isRefreshing = true
            webView.reload()
        }
    )

    //PROGRESS INDICATOR FOR WEB-VIEW

    Surface(modifier = Modifier.fillMaxSize()) {
        CompositionLocalProvider(LocalContext provides context) {
            Box(
                modifier = Modifier
                    .fillMaxSize()
                    .pullRefresh(pullRefreshState)
            ) {
                Column(modifier = Modifier.fillMaxSize()) {
                    if (LinearProgressIndicatorProgress < 1f) {
                        LinearProgressIndicator(
                            progress = LinearProgressIndicatorProgress,
                            color = Color(0xffae52de),
                            modifier = Modifier.fillMaxWidth()
                        )
                    }
                    AndroidView(
                        factory = { webView },
                        modifier = Modifier.fillMaxSize()
                    )
                }


                //PULL-TO-REFRESH

                PullRefreshIndicator(
                    refreshing = isRefreshing,
                    state = pullRefreshState,
                    contentColor = Color(0xffae52de),
                    modifier = Modifier.align(Alignment.TopCenter)
                )

                if (isRefreshing) {
                    Text(
                        text = "Pull to refresh",
                        color = Color(0xffae52de),
                        modifier = Modifier
                            .align(Alignment.TopCenter)
                            .padding(top = 60.dp) // Adjust the padding as needed
                    )
                }
            }
        }


        LaunchedEffect(webView) {
            webView.webViewClient = object : WebViewClient() {
                override fun onPageFinished(view: WebView?, url: String?) {
                    isRefreshing = false
                }
            }
        }
    }
}
private var LinearProgressIndicatorProgress by mutableStateOf(0f)

Answer 1

根据文档：

请注意，此修饰符必须添加到滚动容器（例如惰性列）之上，才能接收滚动事件。

Column

默认情况下不可滚动，您必须使用修饰符：

.verticalScroll(rememberScrollState())