方法一：
public void onClick$btnCompare() throws InterruptedException{
//----------------------
Clients.showBusy("请稍候...", true);
Events.echoEvent("onCompare", this, null);
}
public void onCompare(Event a) throws InterruptedException{
// 处理数据时候的代码
//----------------
Clients.showBusy(null, false);
}