使用javafx创建等待/通知窗口的最佳用途是什么?
我只想创建一次弹出窗口,并通过for循环更改内容;(对于删除的每个文件)。我想回答是/否/否/是/否。所以我需要一个wait()来显示带有第一个电影内容的弹出窗口。例如,如果我说“不”,我希望在第二部电影之前,在aim中解锁线程。在这种情况下,弹出内容会随着第二部电影而改变,我会再次等待(),直到我通过按钮等进行应答 我尝试了很多事情都没有成功,但我得到了以下错误:使用javafx创建等待/通知窗口的最佳用途是什么?,java,multithreading,javafx,wait,Java,Multithreading,Javafx,Wait,我只想创建一次弹出窗口,并通过for循环更改内容;(对于删除的每个文件)。我想回答是/否/否/是/否。所以我需要一个wait()来显示带有第一个电影内容的弹出窗口。例如,如果我说“不”,我希望在第二部电影之前,在aim中解锁线程。在这种情况下,弹出内容会随着第二部电影而改变,我会再次等待(),直到我通过按钮等进行应答 我尝试了很多事情都没有成功,但我得到了以下错误: Exception in thread "JavaFX Application Thread" java.lang.Illegal
Exception in thread "JavaFX Application Thread" java.lang.IllegalMonitorStateException
at java.lang.Object.notifyAll(Native Method)
at controllers.HomeController.notifyPopup(HomeController.java:150)
at controllers.HomeController.lambda$1(HomeController.java:208)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
我在对话框中遇到问题。notify()
也许我没有在同一个对话框对象上应用notify(),但事实就是这样,不是吗
提前感谢您的帮助
这是我的部分代码:搜索//查看代码中的此处,查看主要行
public class HomeController {
@FXML
private Label home;
@FXMLViewFlowContext
private ViewFlowContext context;
RenameFiles film;
SimpleBooleanProperty noAllProperty = new SimpleBooleanProperty(false);
SimpleBooleanProperty yesAllProperty = new SimpleBooleanProperty(false);
SimpleBooleanProperty continuePopup = new SimpleBooleanProperty(false);
ArrayList<Path> arrayFile = new ArrayList<Path>();
Stage stage;
Boolean firstFile = false;
JFXDialogLayout content;
JFXDialog dialog;
@PostConstruct
public void init() throws FlowException, VetoException {
Settings settings = (Settings) context.getRegisteredObject("Settings");
content = new JFXDialogLayout();
dialog = new JFXDialog((StackPane) context.getRegisteredObject("ROOT"), content, JFXDialog.DialogTransition.CENTER);
home.setOnDragOver(new EventHandler<DragEvent>() {
@Override
public void handle(DragEvent event) {
Dragboard dragboard = event.getDragboard();
if (dragboard.hasFiles()) {
event.acceptTransferModes(TransferMode.ANY);
} else {
event.consume();
}
}
});
// Dropping over surface
home.setOnDragDropped(new EventHandler<DragEvent>() {
@Override
public void handle(DragEvent event) {
Dragboard dragboard = event.getDragboard();
boolean success = false;
if (dragboard.hasFiles()) {
arrayFile = new ArrayList<Path>();
success = true;
noAllProperty.set(false);
yesAllProperty.set(false);
dragboard.getFiles().forEach(file -> {
if(Files.isDirectory(file.toPath())){
try(Stream<Path> paths = Files.walk(Paths.get(file.toURI()))) {
paths.forEach(filePath -> {
if (Files.isRegularFile(filePath))
arrayFile.add(filePath);
});
} catch (IOException e) {
e.printStackTrace();
}
}else if (Files.isRegularFile(file.toPath()))
arrayFile.add(file.toPath());
});
}
event.setDropCompleted(success);
event.consume();
arrayFile.forEach(file -> {
film = new RenameFiles(new File(file.toString()), settings);
if(!noAllProperty.getValue()){
if(film.getNameWithoutExt().length() > 0){
if(!yesAllProperty.getValue()){
try {
firstFile = true;
contentPopup();
if(firstFile) {
dialog.show();
dialog.setOverlayClose(false);
firstFile = false;
}
// LOOK HERE
waitPopup(dialog);
} catch (FlowException | InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}else{
film.applyRename(film.getCleanName());
}
}
}
});
}
});
}
public synchronized void waitPopup(JFXDialog dialog) {
// This guard only loops once for each special event, which may not
// be the event we're waiting for.
while(!continuePopup.getValue()) {
try {
dialog.wait();
} catch (InterruptedException e) {}
}
}
public synchronized void notifyPopup(JFXDialog dialog) {
continuePopup.setValue(true);
dialog.notifyAll();
}
private void contentPopup() throws FlowException, InterruptedException{
JFXButton buttonYesPopupRename = new JFXButton("Yes");
buttonYesPopupRename.setPrefHeight(30);
buttonYesPopupRename.setPrefWidth(70);
buttonYesPopupRename.setId("buttonYesPopupRename");
buttonYesPopupRename.setButtonType(ButtonType.RAISED);
buttonYesPopupRename.setOnAction(e -> { film.applyRename(film.getCleanName());continuePopup.setValue(true);notifyPopup(dialog); }); // LOOK HERE
buttonYesPopupRename.setStyle("-fx-text-fill:WHITE;-fx-background-color:#5264AE;-fx-font-size:14px;");
JFXButton buttonNoPopupRename = new JFXButton("No");
buttonNoPopupRename.setPrefHeight(30);
buttonNoPopupRename.setPrefWidth(70);
buttonNoPopupRename.setId("buttonNoPopupRename");
buttonNoPopupRename.setButtonType(ButtonType.RAISED);
buttonNoPopupRename.setOnAction(e -> { continuePopup.setValue(true); notifyPopup(dialog); }); // LOOK HERE
buttonNoPopupRename.setStyle("-fx-text-fill:WHITE;-fx-background-color:#5264AE;-fx-font-size:14px;");
公共类HomeController{
@FXML
自有品牌家居;
@FXMLViewFlowContext
私有视图流上下文;
更名电影;
SimpleBoleAnProperty noAllProperty=新SimpleBoleAnProperty(false);
SimpleBoleAnProperty yesAllProperty=新SimpleBoleAnProperty(false);
SimpleBoleanProperty continuePopup=新的SimpleBoleanProperty(false);
ArrayList arrayFile=新的ArrayList();
阶段性;
布尔值firstFile=false;
JFXDialogLayout内容;
jfx对话框;
@施工后
public void init()引发FlowException,VetoException{
设置=(设置)context.getRegisteredObject(“设置”);
内容=新的JFXDialogLayout();
dialog=newJFXDialog((StackPane)context.getRegisteredObject(“根”),content,JFXDialog.DialogTransition.CENTER);
setOnDragOver(新的EventHandler()){
@凌驾
公共无效句柄(DrageEvent事件){
Dragboard Dragboard=event.getDragboard();
if(dragboard.hasFiles()){
event.acceptTransferModes(TransferMode.ANY);
}否则{
event.consume();
}
}
});
//降落在水面上
setOnDragDrop(新的EventHandler()){
@凌驾
公共无效句柄(DrageEvent事件){
Dragboard Dragboard=event.getDragboard();
布尔成功=假;
if(dragboard.hasFiles()){
arrayFile=新的ArrayList();
成功=真实;
noAllProperty.set(false);
yesAllProperty.set(false);
dragboard.getFiles().forEach(文件->{
if(Files.isDirectory(file.toPath())){
try(Stream path=Files.walk(path.get(file.toURI())){
path.forEach(文件路径->{
if(Files.isRegularFile(filePath))
添加(文件路径);
});
}捕获(IOE异常){
e、 printStackTrace();
}
}else if(Files.isRegularFile(file.toPath()))
add(file.toPath());
});
}
事件。setDropCompleted(成功);
event.consume();
arrayFile.forEach(文件->{
film=新重命名文件(新文件(File.toString()),设置);
如果(!noAllProperty.getValue()){
if(film.getNameWithoutExt().length()>0){
如果(!yesAllProperty.getValue()){
试一试{
firstFile=true;
contentPopup();
如果(第一个文件){
dialog.show();
对话框。设置套圈(错误);
firstFile=false;
}
//看这里
等待弹出窗口(对话框);
}捕获(FlowException | InterruptedException e){
//TODO自动生成的捕捉块
e、 printStackTrace();
}
}否则{
film.applyRename(film.getCleanName());
}
}
}
});
}
});
}
公共同步void waitPopup(JFXDialog对话框){
//对于每个特殊事件,此保护仅循环一次,这可能不会发生
//成为我们等待的事件。
而(!continuePopup.getValue()){
试一试{
dialog.wait();
}捕获(中断异常e){}
}
}
公共同步void notifyPopup(JFXDialog对话框){
continuePopup.setValue(真);
dialog.notifyAll();
}
私有void contentPopup()引发FlowException、InterruptedException{
JFXButton ButtonyESPupPreName=新的JFXButton(“是”);
ButtonySpupPreName.setPrefHeight(30);
ButtonySpupPreName.setPrefWidth(70);
ButtonySpupPreName.setId(“ButtonySpupPreName”);
ButtonySpupPreName.setButtonType(ButtonType.凸起);
ButtonyESPupPreName.setOnAction(e->{film.applyRename(film.getCleanName());continuepop.setValue(true);notifyPopup(dialog);});//查看此处
ButtonySpupPreName.setStyle(“-fx文本填充:白色;-fx背景色:#5264AE;-fx字体大小:14px;”);
JFXButton buttonNoPopupRename=新的JFXButton(“否”);
按钮nopopupRename.setPrefHeight(30);
buttonNoPopupRename.setPrefWidth(70);
setId(“buttonnoppuprename”);
buttonNoPopupRename.setButtonType(ButtonType.Rised);
buttonNoPopupRename.setOnAction(e->{continuePopup.setValue(true);notifyPopup(dialog);});//请看这里
buttonNoPopupRename.setStyle(“-fx文本填充:白色;-fx背景色:#5264AE;-fx字体大小:14px;”);
您必须将等待和通知嵌入同步块中:
synchronized( dialog)
{
dialog.wait();
}
及
顺便说一句:只需notify()就足够了。notifyAll(()只有在有多个线程等待时才有意义。解决问题的方法比您的方法更好:
使需要询问的元素和当前元素的数据可供事件处理程序使用,并在
synchronized( dialog)
{
dialog.notify();
}
@Override
public void start(Stage primaryStage) {
Button btn = new Button("Dialog");
List<String> list = Arrays.asList("A", "B", "C", "D");
btn.setOnAction((ActionEvent event) -> {
displayDialog(list.iterator());
});
StackPane root = new StackPane();
root.getChildren().add(btn);
Scene scene = new Scene(root);
primaryStage.setScene(scene);
primaryStage.show();
}
public static void displayDialog(Iterator<String> iterator) {
if (iterator.hasNext()) {
Button yes = new Button("Yes");
Button no = new Button("No");
Label text = new Label(iterator.next());
Stage stage = new Stage();
stage.setScene(new Scene(new VBox(text, yes, no)));
EventHandler<ActionEvent> handler = evt -> {
Labeled source = (Labeled) evt.getSource();
System.out.println("You chose \"" + source.getText() + "\" for \"" + text.getText() + "\"");
// procede to next state
if (iterator.hasNext()) {
// display next item
text.setText(iterator.next());
} else {
// close "dialog" when no more elements available
stage.close();
}
};
yes.setOnAction(handler);
no.setOnAction(handler);
stage.show();
}
}