kotlin开发安卓app，JetPack Compose框架，给webview新增一个按钮，点击刷新网页

import androidx.activity.compose.BackHandler
import androidx.compose.foundation.layout.*
import androidx.compose.material.*
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Refresh
import androidx.compose.runtime.*
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.vector.ImageVector
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.unit.dp
import androidx.compose.ui.viewinterop.AndroidView
import android.webkit.WebView
import android.webkit.WebViewClient
import android.webkit.CookieManager

@Composable
fun TopAppBarWithWebViewAndRefresh(url: String) {
    val context = LocalContext.current
    var webViewState by remember { mutableStateOf<WebView?>(null) }
    var isRefreshing by remember { mutableStateOf(false) }

    Scaffold(
        topBar = {
            TopAppBar(
                title = { Text(text = "Web View with Refresh") },
                actions = {
                    IconButton(onClick = { 
                        if (webViewState != null) {
                            isRefreshing = true
                            webViewState?.reload()
                        }
                    }) {
                        Icon(Icons.Default.Refresh, contentDescription = "Refresh")
                    }
                }
            )
        }
    ) {
        Column(
            modifier = Modifier.fillMaxSize(),
            verticalArrangement = Arrangement.Top
        ) {
            AndroidView(
                factory = {
                    WebView(context).apply {
                        webViewClient = object : WebViewClient() {
                            override fun onPageFinished(view: WebView?, url: String?) {
                                super.onPageFinished(view, url)
                                // 页面加载完成后设置Cookie
                                CookieManager.getInstance().apply {
                                    setAcceptThirdPartyCookies(this@apply, true)
                                    CookieManager.getInstance().setCookie(url ?: "", "YOUR_COOKIE_STRING")
                                }
                                isRefreshing = false // 页面加载完，停止刷新状态
                            }
                        }
                        settings.javaScriptEnabled = true
                        loadUrl(url)
                        webViewState = this
                    }
                },
                modifier = Modifier.weight(1f)
            )
            
            // 可选：显示刷新指示器
            if (isRefreshing) {
                CircularProgressIndicator(modifier = Modifier.align(Alignment.CenterHorizontally))
            }
        }
    }
}

// 使用示例
@Composable
fun MyApp() {
    TopAppBarWithWebViewAndRefresh("https://www.example.com")
}

import android.os.Bundle
import android.webkit.WebView
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.compose.foundation.layout.*
import androidx.compose.material.*
import androidx.compose.runtime.*
import androidx.compose.ui.Modifier
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp
import com.google.accompanist.web.WebView
import com.google.accompanist.web.WebViewClient
import com.google.accompanist.web.rememberWebViewState

class MainActivity : ComponentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            MyApp()
        }
    }
}

@Composable
fun MyApp() {
    val initialUrl = "https://www.example.com"
    val webViewState = rememberWebViewState(url = initialUrl)
    val webView = remember { WebView(this).apply { webViewClient = WebViewClient() } }

    Scaffold(
        topBar = {
            TopAppBar(
                title = { Text(text = "WebView Example") },
                actions = {
                    IconButton(onClick = {
                        webViewState.reload()
                    }) {
                        Icon(Icons.Default.Refresh, contentDescription = "Refresh")
                    }
                }
            )
        }
    ) {
        WebView(
            state = webViewState,
            modifier = Modifier.fillMaxSize(),
            onCreated = { webView -> 
                webView.settings.javaScriptEnabled = true
            }
        )
    }
}

@Preview(showBackground = true)
@Composable
fun DefaultPreview() {
    MyApp()
}

import android.webkit.WebView  
import android.webkit.WebViewClient  
import androidx.activity.ComponentActivity  
import androidx.activity.compose.setContent  
import androidx.compose.foundation.layout.*  
import androidx.compose.runtime.Composable  
import androidx.compose.runtime.mutableStateOf  
import androidx.compose.runtime.remember  
import androidx.compose.ui.Alignment  
import androidx.compose.ui.Modifier  
import androidx.compose.ui.platform.ComposeView  
import androidx.compose.ui.platform.LocalContext  
import androidx.compose.ui.res.painterResource  
import androidx.compose.ui.tooling.preview.Preview  
import androidx.compose.ui.unit.dp  
import androidx.compose.ui.viewinterop.AndroidView  
import com.google.accompanist.appbar.TopAppBar  
import com.google.accompanist.insets.navigationBarsPadding  
  
@Composable  
fun WebViewScreen() {  
    val webView = remember { WebView(LocalContext.current) }  
  
    // 初始化 WebView（例如加载 URL）  
    webView.webViewClient = object : WebViewClient() {  
        override fun onPageFinished(view: WebView?, url: String?) {  
            super.onPageFinished(view, url)  
            // 页面加载完成的代码  
        }  
    }  
  
    webView.loadUrl("http://www.example.com")  
  
    var refreshButtonClicked by remember { mutableStateOf(false) }  
  
    // 刷新 WebView 的函数  
    fun refreshWebView() {  
        webView.reload()  
    }  
  
    Scaffold(  
        topBar = {  
            TopAppBar(  
                title = { Text("WebView") },  
                actions = {  
                    IconButton(onClick = { refreshButtonClicked = true; if (refreshButtonClicked) refreshWebView() }) {  
                        Icon(painter = painterResource(id = /* 刷新图标的资源ID */), contentDescription = "Refresh")  
                    }  
                },  
                modifier = Modifier  
                    .fillMaxWidth()  
                    .navigationBarsPadding()  
            )  
        },  
        content = {  
            Box(  
                modifier = Modifier  
                    .fillMaxSize()  
                    .padding(16.dp)  
            ) {  
                AndroidView(  
                    factory = { context -> webView },  
                    modifier = Modifier.fillMaxSize()  
                )  
            }  
        }  
    )  
}  
  
class MainActivity : ComponentActivity() {  
    override fun onCreate(savedInstanceState: Bundle?) {  
        super.onCreate(savedInstanceState)  
        setContent {  
            WebViewScreen()  
        }  
    }  
}