Hi All,
I’m trying to use the External Interface class to communicate between Javascript and Flex so I can create a javascript API to call all my flex functions! I’ve set this up as follows
MXML
I call my javascript setUp function and add a callback to my testing function
private function init():void {
//Setting up the CallBacks for API methods
ExternalInterface.addCallback("testIfWorks", testIfWorks);
//Testing the calls made from the API
if (ExternalInterface.available) {
ExternalInterface.call("setUp");
}
else {
Alert.show("Feature requires web browser", 'Error',mx.controls.Alert.OK);
}
}
Javascript
I keep my js stuff in linechart_api.js. My swf is called main so I have a setUp function as follows:
//Set up a global varibale referencing the SWF and allowing access to the SWF functions
function setUp() {
try{
lineChart = (navigator.appName.indexOf(“Microsoft”)!=-1)?window[“main”]:document[“main”];
alert(“app initialized”);
}catch(e){
alert(“SWF cannot be found”);
}
}
I then call the following testing function
function testAPI(){
try{
var res = lineChart.testIfWorks();
return res;
}catch( e ) {
var str_msg;
str_msg += "Name: " + e.name + "
";
str_msg += "File Name: " + e.fileName + "
";
str_msg += "Line Number: " + e.lineNumber + "
";
str_msg += "Message: " + e.message + "
";
str_msg += "Stack: " + e.stack + "
";
alert( str_msg );
}
}
HTML Tester
I add in my javascript API file
<script src=“linechart_api.js” language=“javascript”></script>
and have the following function to call my test
<script language=“JavaScript” type=“text/javascript”>
function test(){
try{
testAPI();
}catch( e ) {
var str_msg;
str_msg += "Name: " + e.name + "
";
str_msg += "File Name: " + e.fileName + "
";
str_msg += "Line Number: " + e.lineNumber + "
";
str_msg += "Message: " + e.message + "
";
str_msg += "Stack: " + e.stack + "
";
alert( str_msg );
}
}
</script>
and I have a button to test this
<button onclick=“test()”>Test</button>
When I click the button I get the following error
lineChart.testAPI is not a function
Can anyone see where I’m going wrong here or how I might get it working? I tried adding a timer to the function of 200milliseconds but the same error keeps coming up? Any help really would be greatly appreciated as this is starting to drive me a bit mental!!!
Thanks,
Derm
