Macromedia Flash Professional 8 UNLEASHED [Electronic resources] نسخه متنی

The loadVariablesNum() Method

The loadVariablesNum() method is similar to the loadVariables() method in that it loads external variables into Flash, but unlike the loadVariables() method, the loadVariablesNum() method loads the variables into a level instead of directly into a movie clip.

The basic layout of this method looks like this:

loadVariablesNum(URL, level, method);

Following are the parameters that loadVariablesNum will accept:

• URL
  The path to either the text file being loaded or the middleware page being called.

• level
  The level in the Flash player to receive the variables when they are loaded.

• method
  This is an optional parameter used to define the method used when transferring data to and from middleware.

It also supports the onData event as a means of announcing when data has been fully loaded.

Here is an example using the loadVariablesNum() method:

//get the data from the text file
loadVariablesNum("sample.txt",0);
//when the movie receives the data
this.onData = function(){
if(init){
trace("my name is - "+this.name);
trace("my age is - "+this.age);
trace("my location is - "+this.location);
}else{
init=true;
}
}

Notice that this time, we use a conditional statement to make sure that the event is not accidentally being triggered by the main timeline's initialization. Also notice that we are calling the original text file we created, not the one we used to put in an array.Figure 20.4.

But the two methods we have covered in regard to loading external data are not the end. There is even a built-in object specifically designed for interfacing with external data.