15
Replies
i try this code but got compiler errors
package {
import flash.display.SimpleButton;
import flash.events.MouseEvent;
import flash.media.StageWebView;
public class webcloss extends SimpleButton {
public function webcloss() {
this.addEventListener(MouseEvent.CLICK,clickF);
}
private function clickF(e:MouseEvent):void{
webView.stage = null;
webView.viewPort = null;
webView.dispose();
webView = null;
}
}
}
This is the code which I use and I got type error
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at webcloss/clickF()
14 line is in red colour. how can I solve this??
package {
import flash.display.SimpleButton;
import flash.events.MouseEvent;
import flash.media.StageWebView;
public class webcloss extends SimpleButton {
private var webView:StageWebView = new StageWebView();
public function webcloss() {
this.addEventListener(MouseEvent.CLICK,clickF);
}
private function clickF(e:MouseEvent):void{
webView.stage = null;
webView.viewPort = null;
webView.dispose();
webView = null;
}
}
}
in this time when I click first time on my webclose button I got output message
WebVIew: [object StageWebView]
On 2nd time click I got same Type Error
webView: null
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at webcloss/clickF()
This the code which I use in webcloss button
package {
import flash.display.SimpleButton;
import flash.events.MouseEvent;
import flash.media.StageWebView;
public class webcloss extends SimpleButton {
private var webView:StageWebView = new StageWebView();
public function webcloss() {
this.addEventListener(MouseEvent.CLICK,clickF);
}
private function clickF(e:MouseEvent):void{
trace("webView: " + webView);
webView.stage = null;
webView.viewPort = null;
webView.dispose();
webView = null;
}
}
}
and this is LoadForm code
package {
import flash.display.SimpleButton;
import flash.media.StageWebView;
import flash.geom.Rectangle;
import flash.events.KeyboardEvent;
import flash.ui.Keyboard;
import flash.desktop.NativeApplication;
import flash.events.MouseEvent;
public class LoadForm extends SimpleButton{
private var webView:StageWebView = new StageWebView();
public function LoadForm() {
this.addEventListener(MouseEvent.CLICK,clickF);
}
public function clickF(e:MouseEvent):void
{
var swv:StageWebView = new StageWebView();
swv.viewPort = new Rectangle(50,50,700,400); // 500px width, 450px height
swv.stage = this.stage; // set stage of StageWebView to document class
swv.loadURL("http://delta-adv.com/roche/form.php"); // load any content
stage.addEventListener( KeyboardEvent.KEY_DOWN, onKey );
}
private function onKey( event:KeyboardEvent ):void
{
if( event.keyCode == Keyboard.BACK && webView.isHistoryBackEnabled )
{
trace("Back.");
webView.historyBack();
event.preventDefault();
}
if( event.keyCode == Keyboard.SEARCH && webView.isHistoryForwardEnabled )
{
trace("Forward.");
webView.historyForward();
}
}
}
}
I'm assuming you have a library element with the class "webcloss" applied to it? Otherwise I don't see where you're using it. In both scenarios I don't see them closing anything but the single instance of StageWebView they're internally instantiating here:
public class webcloss extends SimpleButton
{
private var webView:StageWebView = new StageWebView();
When clicked, it will null out that local private variable to the "webcloss" class. I don't see you actually loading anything into that StageWebView so unless there's missing code I'm not seeing, it should do nothing, but not error, just once (as it is). After that if you hit the close button you've already nulled out "private var webView" so it doesn't exist anymore and you'll get the error.
So far it seems like a scope issue. I believe you're loading a StageWebView elsewhere, such as mentioned your "LoadForm" button class:
public class LoadForm extends SimpleButton
{
private var webView:StageWebView = new StageWebView();
In each of those 2 classes you're instantiating a different StageWebView reference. What I believe you want is to centralize the StageWebView so both buttons can access it simply. A quick example (source files) to illustrate me dropping 2 quick squares on the screen for buttons that communicate with a central class in a very simple way. Not ideal with for applications that need to scale but good enough to illustrate 2 separate library elements communicating with a central class:
Example Source (Saved down to Flash CS5.5, minimum needed for AIR 3.7, feel free to downgrade the AIR version if you use less)
Examine how the simple LoadBtn.as and CloseBtn.use the parent class Main.as (set to the document) to access functions that control one StageWebView instance.
I'm just loading Google:
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