Javafx 在对话框左侧设置图像
我为JavaFX8u40的JavaFXAlert对话框创建了这个非常简单的示例Javafx 在对话框左侧设置图像,javafx,javafx-2,javafx-8,Javafx,Javafx 2,Javafx 8,我为JavaFX8u40的JavaFXAlert对话框创建了这个非常简单的示例 public class MainApp extends Application { public static void main(String[] args) { Application.launch(args); } private Stage stage; @Override public void start(Stage primarySt
public class MainApp extends Application
{
public static void main(String[] args)
{
Application.launch(args);
}
private Stage stage;
@Override
public void start(Stage primaryStage) throws Exception
{
Button create = new Button("Create Alert");
create.setTooltip(new Tooltip("Create an Alert Dialog"));
create.setOnAction(e ->
{
createAlert();
});
primaryStage.setScene(new Scene(create));
primaryStage.show();
stage = primaryStage;
}
protected Alert createAlert()
{
Alert alert = new Alert(AlertType.WARNING);
Image image1 = new Image("http://www.mcaprojecttraining.com/images/java-big-icon.png");
ImageView imageView = new ImageView(image1);
alert.setGraphic(imageView);
alert.initModality(Modality.APPLICATION_MODAL);
alert.initOwner(stage);
alert.getDialogPane().setContentText("Some text");
alert.showAndWait()
.filter(response -> response == ButtonType.OK)
.ifPresent(response -> System.out.println("The alert was approved"));
return alert;
}
}
我感兴趣的是如何设置对话框左侧的图像
是否有人设法改变了图像的侧面
如果您查看标题是如何构造的,您会发现一个
GridPane
节点在左侧布局一个标签
,在图标上布局一个StackPane
如果要按代码颠倒单元格顺序,可以这样做,但每次调用updateHeaderArea()
时都会覆盖它
我的建议是使用这个公共API:
dialogPane.setHeader(Node header);
dialogPane.setGraphic(Node graphic);
提供一个标题
,左侧有一个图标、一个标签和一个空图形
使用与对话框窗格
相同的方法,我们可以添加另一个网格窗格
作为标题:
protected Alert createAlert(){
Alert alert = new Alert(AlertType.WARNING);
alert.initModality(Modality.APPLICATION_MODAL);
alert.initOwner(stage);
alert.getDialogPane().setContentText("Some text");
DialogPane dialogPane = alert.getDialogPane();
GridPane grid = new GridPane();
ColumnConstraints graphicColumn = new ColumnConstraints();
graphicColumn.setFillWidth(false);
graphicColumn.setHgrow(Priority.NEVER);
ColumnConstraints textColumn = new ColumnConstraints();
textColumn.setFillWidth(true);
textColumn.setHgrow(Priority.ALWAYS);
grid.getColumnConstraints().setAll(graphicColumn, textColumn);
grid.setPadding(new Insets(5));
Image image1 = new Image("http://www.mcaprojecttraining.com/images/java-big-icon.png");
ImageView imageView = new ImageView(image1);
imageView.setFitWidth(64);
imageView.setFitHeight(64);
StackPane stackPane = new StackPane(imageView);
stackPane.setAlignment(Pos.CENTER);
grid.add(stackPane, 0, 0);
Label headerLabel = new Label("Warning");
headerLabel.setWrapText(true);
headerLabel.setAlignment(Pos.CENTER_RIGHT);
headerLabel.setMaxWidth(Double.MAX_VALUE);
headerLabel.setMaxHeight(Double.MAX_VALUE);
grid.add(headerLabel, 1, 0);
dialogPane.setHeader(grid);
dialogPane.setGraphic(null);
alert.showAndWait()
.filter(response -> response == ButtonType.OK)
.ifPresent(response -> System.out.println("The alert was approved"));
return alert;
}
这就是你将看到的:
屏幕截图?哪个图像?请发布其他人可以运行的代码。没有人可以访问您的图像文件。@James\u D post updated为什么使用javafx-2标记?这是8u40中的新api,不是吗?