JavaFX 卡住窗口

Question

当我过滤 TreeView (长过程)时遇到问题，我的应用程序卡住了。我尝试在单独的线程(Thread)中执行此操作，但随后出现错误“不在 FX 应用程序线程上；currentThread = Thread-5”

void InitBtnFind() {
        //Event Button Search
        btnFind.setOnAction(event -> {
            newFind();
            if (Config.isRoot()) {
                String finalSFilterExt = filterExt.getText();
                String finalSearchW = searchWord.getText();
                Platform.runLater(() -> {
                    try {
                        // imitation of work
                        Thread.sleep(5000);
                        fileView.setRoot(treeView.filterChanged(finalSFilterExt, finalSearchW));
                    } catch (IOException | InterruptedException e) {
                        e.printStackTrace();
                    }
                    System.out.println("lol");
                });
            }
        });
    }

您可以提供示例代码来解决我的问题。附注不要降低我的声誉，我对这件事很感兴趣

P.s.我尝试用线程来做到这一点

//Event Button Search
        btnFind.setOnAction(event -> {
            newFind();
            if (Config.isRoot()) {
                String finalSFilterExt = filterExt.getText();
                String finalSearchW = searchWord.getText();
                if (findThread != null && findThread.isAlive())
                    findThread.interrupt();
                findThread = new Thread(() -> {
                    try {
                        fileView.setRoot(treeView.filterChanged(finalSFilterExt, finalSearchW));
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                    System.out.println("lol");
                    });
                findThread.setName("findThread");
                findThread.setDaemon(true);
                findThread.start();
            }
            System.out.println("kek");
        });

Answer 1

我是这样修复的，我不知道它有多正确。但这对我有用。我希望它会有用。

  //Event Button Search
        btnFind.setOnAction(event -> {
            newFind();
            if (Config.isRoot()) {
                String finalSFilterExt = filterExt.getText();
                String finalSearchW = searchWord.getText();
                if (findThread != null && findThread.isAlive())
                    findThread.interrupt();
                findThread = new Thread(() -> {
                    try {
                        Thread.sleep(2000);
                        System.out.println("++++++++++++++");
                        var q =treeView.filterChanged(finalSFilterExt, finalSearchW);
                        Platform.runLater(()->{fileView.setRoot(q);});
                    } catch (IOException | InterruptedException e) {
                        e.printStackTrace();
                    }
                    });
                findThread.setName("findThread");
                findThread.setDaemon(true);
                findThread.start();
            }
        });