JavaFX中

Question

关闭对话框我有这个简单的对话框中的JavaFX：

Stage dialogStage = new Stage(); 
     dialogStage.initModality(Modality.WINDOW_MODAL); 
     dialogStage.setScene(new Scene(VBoxBuilder.create() 
       .children(new Text(text), new Button("Close")).alignment(Pos.CENTER).padding(new Insets(5)).build(), xSize, ySize, backgroundColor)); 
     dialogStage.show(); 

我想关闭该对话框，当我点击一个Close按钮，所以我修改了代码是这样的：

Stage dialogStage = new Stage(); 
     dialogStage.initModality(Modality.WINDOW_MODAL); 
     dialogStage.setScene(new Scene(VBoxBuilder.create() 
       .children(new Text(text), new Button("Close").setOnAction(new EventHandler<ActionEvent>() { 
      @Override 
      public void handle(ActionEvent e) { 
       aboutDialog(); 
      } 
     })).alignment(Pos.CENTER).padding(new Insets(5)).build(), xSize, ySize, backgroundColor)); 
     dialogStage.show(); 

但是我在Netbeans中得到这个错误信息：'void' type not allowed here

你能告诉他们什么是使用Close按钮关闭对话框的正确方法吗？

Answer 1

代替

@Override 
public void handle(ActionEvent e) { 
    aboutDialog(); 
} 

尝试

@Override 
public void handle(ActionEvent e) { 
    dialogStage.hide(); 
} 

Answer 2

你有'void' type not allowed here因为当你调用setOnAction方法返回一个void对象。为了避免这个问题，你需要有处理程序的制作工具之外是这样的：

Button but = new Button("Close"); 
but.setOnAction(new EventHandler<ActionEvent>() { 
    @Override 
    public void handle(ActionEvent e) { 
     aboutDialog(); 
    } 
}); 

Stage dialogStage = new Stage(); 
dialogStage.initModality(Modality.WINDOW_MODAL); 
dialogStage.setScene(new Scene(VBoxBuilder.create() 
       .children(new Text(text), but).alignment(Pos.CENTER).padding(new Insets(5)).build(), xSize, ySize, backgroundColor)); 
dialogStage.show();