[转]TextArea TextField 文本 即时显示最后一行
TextField:

stage.invalidate(); // 每次更新 textField的text都要调用
textField.addEventListener(Event.RENDER, renderHandler);
private function renderHandler(e:Event):void
{
textField.scrollV = textField.maxScrollV;
}
fl的组件:

textArea.addEventListener(Event.RENDER, renderHandler); // 每次更新text时调用
private function renderHandler(e:Event):void
{
// 一次更新后删除这个侦听,
// 因为fl.controls.TextArea会在显示更新时发送该事件(即便是滚动条的显示更新也会发送)
textArea.removeEventListener(Event.RENDER, renderHandler);
textArea.verticalScrollPosition = textArea.maxVerticalScrollPosition;
}
flex中的组件:

textArea.addEventListener(FlexEvent.UPDATE_COMPLETE, updateCompleteHandler);
private function renderHandler(e:FlexEvent):void
{
textArea.verticalScrollPosition = textArea.maxVerticalScrollPosition;
}