用线程来实现图标的闪跳

new Thread() {
			public void run() {
				while (true) {
					rightHelpHandFlag = !rightHelpHandFlag;
					try {
						Thread.sleep(600);//600
					} catch (Exception e) {
						// TODO: handle exception
					}
				}
			};
		}.start();

核心代码是：rightHelpHandFlag = !rightHelpHandFlag;