JavaFXEventHandler传递参数 Rectangle rect1=新矩形(10,10,20,20); 矩形rect2=新矩形(60,10,20,20); EventHandler事件=新的EventHandler(){ @凌驾 公共无效句柄(MouseEvent ae){ 系统输出打印项次(“aaa”); } }; rect1.setOnMouseClicked(事件); rect2.setOnMouseClicked(事件);
如何单击rect1打印aaa,单击rect2打印bbb 在我的实际程序中,我有数百个矩形,在这种情况下,我有很多事情要做。所以我不想为每个人都声明事件 谢谢 像这样:JavaFXEventHandler传递参数 Rectangle rect1=新矩形(10,10,20,20); 矩形rect2=新矩形(60,10,20,20); EventHandler事件=新的EventHandler(){ @凌驾 公共无效句柄(MouseEvent ae){ 系统输出打印项次(“aaa”); } }; rect1.setOnMouseClicked(事件); rect2.setOnMouseClicked(事件);,java,javafx,eventhandler,Java,Javafx,Eventhandler,如何单击rect1打印aaa,单击rect2打印bbb 在我的实际程序中,我有数百个矩形,在这种情况下,我有很多事情要做。所以我不想为每个人都声明事件 谢谢 像这样: Rectangle rect1 = new Rectangle(10, 10, 20, 20); Rectangle rect2 = new Rectangle(60, 10, 20, 20); EventHandler<MouseEvent> event = new EventHandler
Rectangle rect1 = new Rectangle(10, 10, 20, 20);
Rectangle rect2 = new Rectangle(60, 10, 20, 20);
EventHandler<MouseEvent> event = new EventHandler<MouseEvent>() {
@Override
public void handle(MouseEvent ae) {
System.out.println("aaa");
}
};
rect1.setOnMouseClicked(event);
rect2.setOnMouseClicked(event);
Rectangle rect1=新矩形(10,10,20,20);
rect1.setUserData(“aaa”);
矩形rect2=新矩形(60,10,20,20);
rect2.setUserData(“bbb”);
EventHandler事件=新的EventHandler()
{
@凌驾
公共无效句柄(最终MouseEvent ME)
{
Object obj=ME.getSource();//您也可以试试ME.getTarget()
if(矩形的obj实例)
{
System.out.println(((矩形)obj.getUserData());
}
}
};
rect1.setOnMouseClicked(事件);
rect2.setOnMouseClicked(事件);
太棒了!完美的非常感谢。
Rectangle rect1 = new Rectangle(10, 10, 20, 20);
rect1.setUserData( "aaa" );
Rectangle rect2 = new Rectangle(60, 10, 20, 20);
rect2.setUserData( "bbb" );
EventHandler<MouseEvent> event = new EventHandler<MouseEvent>()
{
@Override
public void handle( final MouseEvent ME )
{
Object obj = ME.getSource(); // you can also try ME.getTarget()
if ( obj instanceof Rectangle )
{
System.out.println( ((Rectangle) obj).getUserData() );
}
}
};
rect1.setOnMouseClicked(event);
rect2.setOnMouseClicked(event);