0
最近,我被要求更改一个小型的Flash应用程序,我使用外部回调而不是使用嵌入式按钮。AS3为听众添加回调
我想这个过程自动化,并用此功能上来:
/**
* Add an External callback for all PUBLIC methods that listen to 'listenerType' in 'listenersHolder'.
* @param listenersHolder - the class that holds the listeners we want to expose.
* @param listenerType - a String with the name of the event type we want to replace with the external callback.
*/
public static function addCallbacksForListeners(listenersHolder:*, listenerType:String):void
{
// get the holder description
var description:XML = describeType(listenersHolder);
// go over the methods
for each(var methodXML:XML in description..method)
{
// go over the methods parameters
for each(var parameterXML:XML in methodXML..parameter)
{
// look for the requested listener type
var parameterType:String = [email protected];
if (parameterType.indexOf(listenerType) > -1)
{
var methodName:String = [email protected];
trace("Found: " + methodName);
// get the actual method
var method:Function = listenersHolder[methodName];
// add the callback
try
{
ExternalInterface.addCallback(methodName, method);
trace("A new callback was added for " + methodName);
}
catch (err:Error)
{
trace("Error adding callback for " + methodName);
trace(err.message);
}
}
}
}
使用此功能,我不得不听者的功能转变为公共之前,加空默认参数,当然还有删除/隐藏的视觉效果。
例如来自:
私有函数onB1Click(E:MouseEvent)方法:无效
到:
公共函数onB1Click(E:的MouseEvent = NULL): void
将此行添加到init/onAdded ToStage功能:
addCallbacksForListeners(this,“MouseEvent”);
并从舞台上删除按钮或只是注释添加它的行。
我的问题是:你能找到一个更好/更有效的方法来做到这一点? 欢迎任何反馈..
不错,没想过那个。谢谢 !! –