解决办法

• 打开 File → Project Structure → Project

• 确保 Project SDK 是 与你的 jvmToolchain 保持一致

• 如果没有，点击右上角 Add SDK 添加 JDK 路径

• 

• 同步Sync

• 然后就正常了。

• 

  package org.example.projectimport androidx.compose.animation.AnimatedVisibility
  import androidx.compose.foundation.Image
  import androidx.compose.foundation.layout.Column
  import androidx.compose.foundation.layout.fillMaxWidth
  import androidx.compose.material.Button
  import androidx.compose.material.MaterialTheme
  import androidx.compose.material.Text
  import androidx.compose.runtime.*
  import androidx.compose.ui.Alignment
  import androidx.compose.ui.Modifier
  import org.jetbrains.compose.resources.painterResource
  import org.jetbrains.compose.ui.tooling.preview.Preview
  import androidx.compose.foundation.layout.*
  import androidx.compose.material.Button
  import androidx.compose.material.Text
  import androidx.compose.runtime.*
  import androidx.compose.ui.unit.dp
  import androidx.compose.ui.window.Window
  import androidx.compose.ui.window.application
  import java.awt.FileDialog
  import java.awt.Frame@Composable
  @Preview
  fun App() {var selectedFiles by remember { mutableStateOf<List<String>>(emptyList()) }MaterialTheme {Column(modifier = androidx.compose.ui.Modifier.padding(16.dp),horizontalAlignment = Alignment.CenterHorizontally) {Button(onClick = {// 调用 AWT FileDialog 打开多文件选择器val dialog = FileDialog(null as Frame?, "选择文件", FileDialog.LOAD)dialog.isMultipleMode = true // 允许多选dialog.isVisible = trueval files = dialog.filesif (files != null) {selectedFiles = files.map { it.absolutePath }}}) {Text("选择多个文件")}Spacer(modifier = androidx.compose.ui.Modifier.height(16.dp))selectedFiles.forEach {Text("✅ $it")}}}
  }