JavaFX学习笔记-拖拽进度条Slider；使用自动任务更新组件实现自动滑动进度条

 

Pane pane = new Pane();
	
Slider slider = new Slider(0, 100, 50);
slider.setPrefWidth(300);
slider.setLayoutX(100);
slider.setLayoutY(300);
	
// 进度条下面的刻度
slider.setShowTickMarks(true);
	
// 进度条下面的值
slider.setShowTickLabels(true);
	
// 刻度值之间的间距值
slider.setMajorTickUnit(10);
	
// 当前位置
slider.setValue(20);
	
// 方向改为竖的样式
//		slider.setOrientation(Orientation.VERTICAL);
	
slider.valueProperty().addListener(new ChangeListener<Number>()
{
	@Override
	public void changed(ObservableValue<? extends Number> observable, Number oldValue, Number newValue)
	{
		System.out.println("正在拖动进度条, 当前值: " + newValue);
	}
});
	
slider.setOnMouseClicked(new EventHandler<MouseEvent>()
{
	@Override
	public void handle(MouseEvent event)
	{
		if (event.getClickCount() == 1)
		{
			System.out.println("鼠标点击位置的值是: " + slider.getValue());
		}
	}
});
	
pane.getChildren().add(slider);

// 使用线程自动滚动进度条
new Thread(new Runnable()
{
	int t = 0;

	@Override
	public void run()
	{
		for (int i = 0; i < 100; ++i)
		{
			t = i;
			Platform.runLater(new Runnable()
			{

				@Override
				public void run()
				{
					slider.setValue(t);
				}
			});

			try
			{
				Thread.sleep(100);
			} catch (InterruptedException e)
			{
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}

		try
		{
			Thread.sleep(100);
		} catch (InterruptedException e)
		{
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

在线程里面更新组件的方法：

Pane pane = new Pane();
	
Slider slider = new Slider(0, 100, 50);
slider.setPrefWidth(300);
slider.setLayoutX(100);
slider.setLayoutY(300);
	
// 进度条下面的刻度
slider.setShowTickMarks(true);
	
// 进度条下面的值
slider.setShowTickLabels(true);
	
// 刻度值之间的间距值
slider.setMajorTickUnit(10);
	
// 当前位置
slider.setValue(20);
	
// 方向改为竖的样式
//		slider.setOrientation(Orientation.VERTICAL);
	
My m = new My(slider);
m.setDelay(Duration.millis(0)); // 延迟多久运行
m.setPeriod(Duration.millis(1000)); // 多久运行一次
m.start();
	
	
slider.valueProperty().addListener(new ChangeListener<Number>()
{
	@Override
	public void changed(ObservableValue<? extends Number> observable, Number oldValue, Number newValue)
	{
		System.out.println("正在拖动进度条, 当前值: " + newValue);
	}
});
	
slider.setOnMouseClicked(new EventHandler<MouseEvent>()
{
	@Override
	public void handle(MouseEvent event)
	{
		if (event.getClickCount() == 1)
		{
			System.out.println("鼠标点击位置的值是: " + slider.getValue());
		}
	}
});
	
pane.getChildren().add(slider);
	
new Thread(new Runnable()
{
	int t = 0;

			@Override
	public void run()
	{
		for (int i = 0; i < 100; ++i)
		{
			t = i;
			Platform.runLater(new Runnable()
			{

						@Override
				public void run()
				{
					slider.setValue(t);
				}
			});

					try
			{
				Thread.sleep(100);
			} catch (InterruptedException e)
			{
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}

				try
		{
			Thread.sleep(100);
		} catch (InterruptedException e)
		{
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}


class My extends ScheduledService<Integer>
{
	public int i;
	
	public Slider s;
	
	public My(Slider s)
	{
		this.s = s;
		i = 0;
	}

	@Override
	protected Task<Integer> createTask()
	{
		Task task = new Task<Integer>()
		{
			@Override
			protected Integer call() throws Exception
			{
				return i = i + 1;
			}

			@Override
			protected void updateValue(Integer value)
			{
//				super.updateValue(value);
				
				s.setValue(value);
			}
		};
		
		return task;
	}
}