我有一个主文件有切换按钮,单击其中一个按钮我启动一个新的FXMLLoader,有大约10个SVG,15个Textfield和6个微调器.此外,它有CSS来相应地渲染节点...它加载正常,没有错误或任何问题,但在显示场景之前需要一两秒钟.
我想这是由于节点数量同时被初始化.有没有办法在节点开始初始化之前显示场景？
注意:我的项目要求我在点击时导航到不同的场景.
从中选择ToggleButton
if(settings.isSelected()){
Stage stage = (Stage) mainWrapper.getScene().getWindow();
Parent root = FXMLLoader.load(getClass().getResource("/fxmlFiles/settings.fxml"));
stage.setScene(new Scene(root, Screen.getPrimary().getVisualBounds().getWidth(),
Screen.getPrimary().getVisualBounds().getHeight()));
stage.centerOnScreen();
//stage.setMaximized(true);
stage.show();
}
fxmlFile
<FlowPane xmlns:fx="http://javafx.com/fxml"
fx:controller="controllers.motelInfoController"
stylesheets="/cssFiles/motelInfo.css"
fx:id="content">
<VBox fx:id="mainWrapper">
<VBox fx:id="validationWrapper">
<Label fx:id="validationLabel" visible="false"/>
</VBox>
<VBox fx:id="generalInfo">
<HBox> <!--First Row-->
<HBox>
<Group>
<SVGPath fx:id="iconMotelName" scaleX="0.05" scaleY="0.05" fill="white"/>
</Group>
<Group>
<TextField fx:id="miName" promptText="Motel Name"/>
</Group>
</HBox>
<HBox>
<Group>
<TextField fx:id="miFranchiseName" promptText="Franchise Name"/>
</Group>
</HBox>
</HBox>
<HBox> <!--Second Row-->
<HBox>
<Group>
<SVGPath fx:id="iconMotelAddress" scaleX="0.05" scaleY="0.05" fill="white"/>
</Group>
<Group>
<TextField fx:id="miAddress" promptText="Street Name"/>
</Group>
</HBox>
<HBox>
<Group>
<TextField fx:id="miCity" promptText="City/Town Name"/>
</Group>
</HBox>
</HBox>
<HBox><!--Third Row-->
<HBox style="-fx-spacing: 25px;">
<Label></Label> <!--Empty label for purpose of leaving icon gap since N/A here-->
<Group>
<TextField fx:id="miState" promptText="State"/>
</Group>
</HBox>
<HBox>
<Group>
<TextField fx:id="miZipCode" promptText="Zip Code"/>
</Group>
</HBox>
<HBox>
<Group>
<SVGPath fx:id="iconMotelContact" scaleX="0.05" scaleY="0.05" fill="white"/>
</Group>
<Group>
<TextField fx:id="miContact" promptText="Contact no."/>
</Group>
</HBox>
</HBox>
<HBox> <!--Fourth Row-->
<HBox>
<Group>
<SVGPath fx:id="iconMotelFax" scaleX="0.05" scaleY="0.05" fill="white"/>
</Group>
<Group>
<TextField fx:id="miFax" promptText="Fax no."/>
</Group>
</HBox>
<HBox>
<Group>
<SVGPath fx:id="iconMotelEmail" scaleX="0.05" scaleY="0.05" fill="white"/>
</Group>
<Group>
<TextField fx:id="miEmail" promptText="Email id"/>
</Group>
</HBox>
<HBox>
<Group>
<SVGPath fx:id="iconMotelNoOfRooms" scaleX="0.05" scaleY="0.05" fill="white"/>
</Group>
<Group>
<TextField fx:id="miNOR" promptText="No. of Rooms"/>
</Group>
</HBox>
</HBox>
<HBox style="-fx-spacing: 50px"> <!--Fifth Row-->
<HBox>
<Group>
<SVGPath fx:id="iconMotelCheckInTime" scaleX="0.05" scaleY="0.05" fill="white"/>
</Group>
<Group>
<Spinner fx:id="hourSpinnerCIT"/>
</Group>
<Group>
<Spinner fx:id="minSpinnerCIT"/>
</Group>
<Group>
<Spinner fx:id="secSpinnerCIT"/>
</Group>
</HBox>
<HBox>
<Group>
<SVGPath fx:id="iconMotelCheckOutTime" scaleX="0.05" scaleY="0.05" fill="white"/>
</Group>
<Group>
<Spinner fx:id="hourSpinnerCOT"/>
</Group>
<Group>
<Spinner fx:id="minSpinnerCOT"/>
</Group>
<Group>
<Spinner fx:id="secSpinnerCOT"/>
</Group>
</HBox>
</HBox>
</VBox>
<VBox fx:id="roomOccupancy">
<HBox> <!--First Row-->
<Label fx:id="labelMaxGuestSelection"
text="Maximum Allowed Guest in individual Rooms. Please state the max count in adjacent cells"/>
<VBox>
<HBox>
<Group>
<SVGPath fx:id="iconMotelSingleBed" scaleX="0.05" scaleY="0.05" fill="white"/>
</Group>
<Group>
<TextField fx:id="miSB" promptText="Single Bed"/>
</Group>
</HBox>
<HBox>
<Group>
<SVGPath fx:id="iconMotelTwoBeds" scaleX="0.05" scaleY="0.05" fill="white"/>
</Group>
<Group>
<TextField fx:id="miTB" promptText="Two Beds"/>
</Group>
</HBox>
<HBox>
<Group>
<SVGPath fx:id="iconMotelfamilyRoom" scaleX="0.05" scaleY="0.05" fill="white"/>
</Group>
<Group>
<TextField fx:id="miFR" promptText="Family Room"/>
</Group>
</HBox>
</VBox>
</HBox>
<HBox> <!--Second Row-->
<Label fx:id="labelMaxGuestCharged"
text="Rate Charged per Guest after max. allowed guest exceeds in a room"/>
<HBox>
<Group>
<SVGPath fx:id="iconMotelGuestExceedRate" scaleX="0.05" scaleY="0.05" fill="white"/>
</Group>
<Group>
<TextField fx:id="miGER" promptText="Rate/Guest Exceeded"/>
</Group>
</HBox>
</HBox>
</VBox>
<VBox fx:id="submissionWrapper">
<Group>
<Button fx:id="submit" text="UPDATE" onAction="#saveData"/>
</Group>
</VBox>
</VBox>
</FlowPane>
FXML控制器
@Override
public void initialize(URL location, ResourceBundle resources) {
//Load the data if the motelInfo file exist
File checkTemp = new File("motelDetails.ser");
if(checkTemp.exists()){
readDataFromFile();
}
//Getting Values for the spinner
for(int i=0;i<24;i++){
hourList.add(String.format("%02d", i));
}
final SpinnerValueFactory<String> hourValuesCIT = new SpinnerValueFactory.ListSpinnerValueFactory<>(hourList);
final SpinnerValueFactory<String> hourValuesCOT = new SpinnerValueFactory.ListSpinnerValueFactory<>(hourList);
for(int i=0; i<60; i++){
minList.add(String.format("%02d", i));
secList.add(String.format("%02d", i));
}
final SpinnerValueFactory<String> minValuesCIT = new SpinnerValueFactory.ListSpinnerValueFactory<>(minList);
final SpinnerValueFactory<String> minValuesCOT = new SpinnerValueFactory.ListSpinnerValueFactory<>(minList);
final SpinnerValueFactory<String> secValuesCIT = new SpinnerValueFactory.ListSpinnerValueFactory<>(secList);
final SpinnerValueFactory<String> secValuesCOT = new SpinnerValueFactory.ListSpinnerValueFactory<>(secList);
styleSpinner(hourSpinnerCIT, hourValuesCIT);
styleSpinner(hourSpinnerCOT, hourValuesCOT);
styleSpinner(minSpinnerCIT, minValuesCIT);
styleSpinner(minSpinnerCOT, minValuesCOT);
styleSpinner(secSpinnerCIT, secValuesCIT);
styleSpinner(secSpinnerCOT, secValuesCOT);
}
看来你有两个问题:
readDataFromFile()在阻止更新的UI线程上运行long operation()我建议通过在不同的线程中运行加载并在发生时显示加载屏幕来修复这两件事.见下一个例子:
public class Main extends Application {
@Override
public void start(Stage stage) throws Exception {
StackPane loadingRoot = new StackPane();
loadingRoot.getChildren().setAll(new ProgressIndicator());
final Scene scene = new Scene(loadingRoot);
stage.setWidth(400);
stage.setHeight(400);
stage.setScene(scene);
stage.show();
new Thread(() -> {
veryLongOperation();
// we need to wrap UI code in Platform
Platform.runLater(() -> {
Parent root;
try {
root = FXMLLoader.load(Main.class.getResource("FXMLDocument.fxml"));
scene.setRoot(root);
} catch (IOException ex) {
}
});
}).start();
}
public static void veryLongOperation() {
try {
// long-long operation
Thread.sleep(5000);
} catch (Exception ex) {
}
}
}
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