[ActionScript3.0] AS3利用ExternalInterface与js通信
AS3代码，可做文档类;
package {
import flash.display.Sprite;
import flash.events.*;
import flash.external.ExternalInterface;
import flash.text.TextField;
import flash.utils.Timer;
import flash.text.TextFieldType;
import flash.text.TextFieldAutoSize;
public class ExternalInterfaceExample extends Sprite {
private var input:TextField;
private var output:TextField;
private var sendBtn:Sprite;
public function ExternalInterfaceExample() {
input = new TextField();
input.type = TextFieldType.INPUT;
input.background = true;
input.border = true;
input.width = 350;
input.height = 18;
addChild(input);
sendBtn = new Sprite();
sendBtn.mouseEnabled = true;
sendBtn.x = input.width + 10;
sendBtn.graphics.beginFill(0xCCCCCC);
sendBtn.graphics.drawRoundRect(0, 0, 80, 18, 10, 10);
sendBtn.graphics.endFill();
sendBtn.addEventListener(MouseEvent.CLICK, clickHandler);
addChild(sendBtn);
var t:TextField = new TextField();
t.text = "Send";
t.selectable = false;
t.autoSize = TextFieldAutoSize.LEFT;
t.x = (sendBtn.width - t.width) / 2;
t.y = (sendBtn.height - t.height) / 2;
sendBtn.addChild(t);
output = new TextField();
output.y = 25;
output.width = 450;
output.height = 325;
output.multiline = true;
output.wordWrap = true;
output.border = true;
output.text = "Initializing...\n";
addChild(output);
if (ExternalInterface.available) {
try {
output.appendText("Adding callback...\n");
ExternalInterface.addCallback("sendToActionScript", receivedFromJavaScript);//as接收js发送过来的信息
if (checkJavaScriptReady()) {
output.appendText("JavaScript is ready.\n");
} else {
output.appendText("JavaScript is not ready, creating timer.\n");
var readyTimer:Timer = new Timer(100, 0);
readyTimer.addEventListener(TimerEvent.TIMER, timerHandler);
readyTimer.start();
}
} catch (error:SecurityError) {
output.appendText("A SecurityError occurred: " + error.message + "\n");
} catch (error:Error) {
output.appendText("An Error occurred: " + error.message + "\n");
}
} else {
output.appendText("External interface is not available for this container.");
}
}
private function receivedFromJavaScript(value:String):void {
output.appendText("JavaScript says: " + value + "\n");
}
private function checkJavaScriptReady():Boolean {
var isReady:Boolean = ExternalInterface.call("isReady");
return isReady;
}
private function timerHandler(event:TimerEvent):void {
output.appendText("Checking JavaScript status...\n");
var isReady:Boolean = checkJavaScriptReady();
if (isReady) {
output.appendText("JavaScript is ready.\n");
Timer(event.target).stop();
}
}
private function clickHandler(event:MouseEvent):void {
if (ExternalInterface.available) {
ExternalInterface.call("sendToJavaScript", input.text);//as向js发送信息
}
}
}
}
JS代码，方式一;
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
<title>ExternalInterfaceExample</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="language" content="en" />
<meta name="description" content="" />
<meta name="keywords" content="" />
<script language="JavaScript">
var jsReady = false;
function isReady() {
return jsReady;
}
function pageInit() {
jsReady = true;
document.forms["form1"].output.value += "\n" + "JavaScript is ready.\n";
}
function thisMovie(movieName) {
if (navigator.appName.indexOf("Microsoft") != -1) {
return window[movieName];
} else {
return document[movieName];
}
}
function sendToActionScript(value) {
thisMovie("ExternalInterfaceExample").sendToActionScript(value);
}
function sendToJavaScript(value) {
document.forms["form1"].output.value += "ActionScript says: " + value + "\n";
}
</script> </head>
<body onload="pageInit();"> <object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"
id="ExternalInterfaceExample" width="500" height="375"
codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab">
<param name="movie" value="ExternalInterfaceExample.swf" />
<param name="quality" value="high" />
<param name="bgcolor" value="#869ca7" />
<param name="allowScriptAccess" value="sameDomain" />
<embed src="ExternalInterfaceExample.swf" quality="high" bgcolor="#869ca7"
width="500" height="375" name="ExternalInterfaceExample" align="middle"
play="true" loop="false" quality="high" allowScriptAccess="sameDomain"
type="application/x-shockwave-flash"
pluginspage="http://www.macromedia.com/go/getflashplayer">
</embed>
</object> <form name="form1" onsubmit="return false;">
<input type="text" name="input" value="" />
<input type="button" value="Send" onclick="sendToActionScript(this.form.input.value);" /><br />
<textarea cols="60" rows="20" name="output" readonly="true">Initializing...</textarea>
</form> </body> </html>
JS代码，方式二;（需要文件 swfobject.js）
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
<title>ExternalInterfaceExample</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="language" content="en" />
<meta name="description" content="" />
<meta name="keywords" content="" />
<script type="text/javascript" src="swfobject.js"></script>
<script type="text/javascript">
swfobject.registerObject("ExternalInterfaceExample", "9.0.0", "expressInstall.swf", callbackFn); function sendToJavaScript(value) {
document.getElementById("output").value += "ActionScript says: " + value + "\n";
} function ExternalInterfaceExample_DoFSCommand(command, args) {//此方法是用于fscommand() 与js通信，在此可忽略
document.getElementById("output").value += "ActionScript says: " + args + "\n";
} function callbackFn(status) {
if (status.success) {
var obj = status.ref;
document.getElementById("but").onclick = function() {
if (obj && typeof obj.sendToActionScript!= "undefined") {
obj.sendToActionScript(document.getElementById("input").value);
}
};
}
} </script> </head>
<body> <object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"
id="ExternalInterfaceExample" width="500" height="375"
codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab">
<param name="movie" value="ExternalInterfaceExample.swf" />
<param name="quality" value="high" />
<param name="bgcolor" value="#869ca7" />
<param name="allowScriptAccess" value="sameDomain" />
<embed src="ExternalInterfaceExample.swf" quality="high" bgcolor="#869ca7"
width="500" height="375" name="ExternalInterfaceExample" align="middle"
play="true" loop="false" quality="high" allowScriptAccess="sameDomain"
type="application/x-shockwave-flash"
pluginspage="http://www.macromedia.com/go/getflashplayer">
</embed>
</object> <form name="form1" onsubmit="return false;">
<input type="text" name="input" id="input" value="" />
<input type="button" value="ExternalInterface" id="but"/><br />
<textarea cols="60" rows="20" name="output" id="output" readonly="true">Initializing...</textarea>
</form>
</body> </html>
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