I just thought it would be useful to know how to check if an swf has been focused or otherwise. This situation arises when the end user clicks outside of the stage (on the address bar of the browser, for example).
stage.addEventListener(Event.DEACTIVATE, notFocused);
stage.addEventListener(Event.ACTIVATE, focused);
function notFocused(e:Event) {
trace("Not focused");
}
function focused(e:Event) {
trace("Focused");
}
We can also avail NativeApplication for the same in AIR application.
import flash.desktop.NativeApplication;
import flash.events.Event;
NativeApplication.nativeApplication.addEventListener(Event.ACTIVATE, onActivate);
NativeApplication.nativeApplication.addEventListener(Event.DEACTIVATE, onDeactivate);
function onActivate(e:Event){
trace("Activate");
}
function onDeactivate(e:Event){
trace("Deactivate");
}
Related
I have an AS3 project that has all its assets embedded using the [Embed] metadata tag because I would like the resulting SWF to be completely self-contained for the sake of portability on the internet.
Problem:
The file size is rather large, and I would like a progress bar to be displayed as it loads itself instead of a blank screen until it's completely finished. I can already achieve this with Adobe Animate (Flash Professional) by having a timeline with a light frame 1 and a heavy frame 2 which has a MovieClip that embeds the bulk of the assets.
I'm trying to switch over to Adobe Flash Builder, which has no IDE timeline, but I'm at a loss on how to do the same thing as the Flash IDE. Does anyone have any ideas on how to accomplish this?
Option №1. The one I'd picked, because it's easier to comprehend: external loader. A lightweight SWF with the only purpose of displaying some preloading info like % or progress while loading the heavyweight main module.
Option №2. There's a certain metatag that allows you to emulate that frame 1 preloader behavior. Keep in mind that is is not supported by ASC2.0 compiler (AIR SDK, I assume) but only by ASC1.0 compiler (Flex SDK). Flash Builder is a descendant of Flex Builder, so it's fine, I guess, but if it does not work for you, the first thing you should check is the compiler version your Flash Builder is packed with.
So, your main (the one you set as the document class in the settings) class should have that one metatag:
package
{
import flash.events.Event;
import flash.display.Sprite;
// Brace for the magic impact.
[Frame(factoryClass="Preloader")]
public class Main extends Sprite
{
public function Main()
{
// This is important, because at the moment of creation
// the instance is not attached to the stage.
if (stage) onStage(null);
else addEventListener(flash.events.Event.ADDED_TO_STAGE, onStage);
}
private function onStage(e:Event):void
{
removeEventListener(flash.events.Event.ADDED_TO_STAGE, onStage);
// This is the entry point of your actual application.
// The rest of the class goes normally from this point on.
Then, the mentioned preloader class. Its name should qualify exactly as mentioned in the metatag above.
package
{
import flash.display.DisplayObject;
import flash.display.MovieClip;
import flash.events.Event;
import flash.events.IOErrorEvent;
import flash.events.ProgressEvent;
import flash.utils.getDefinitionByName;
// This class represents the multi-framed main timeline
// thus it should subclass the basic MovieClip.
public class Preloader extends MovieClip
{
public function Preloader()
{
// Subscribe to all necessary points to monitor the loading.
addEventListener(Event.ENTER_FRAME, onFrame);
loaderInfo.addEventListener(IOErrorEvent.IO_ERROR, ioError);
loaderInfo.addEventListener(ProgressEvent.PROGRESS, onProgress);
}
private function ioError(e:IOErrorEvent):void
{
// Handle loading errors here.
}
private function onProgress(e:ProgressEvent):void
{
// Display loading progress here.
// Use e.bytesLoaded and e.bytesTotal values
// to calculate the % loaded and the overall loading progress.
}
private function onFrame(e:Event):void
{
// When the loading is finished, the main timeline,
// represented by Preloader class moves to the frame 2.
if (currentFrame == totalFrames)
{
stop();
onComplete();
}
}
// This method concludes the loading,
// cleans up the preloader itself
// and instantiates the Main class.
private function onComplete():void
{
removeEventListener(Event.ENTER_FRAME, onFrame);
loaderInfo.removeEventListener(IOErrorEvent.IO_ERROR, ioError);
loaderInfo.removeEventListener(ProgressEvent.PROGRESS, onProgress);
// So, here's the thing. You don't import the Main class
// because if you import it, then it will be embedded into
// the Preloader, then it must be loaded before Preloader
// can be initialized, which kind of fails the whole idea.
// Thus, you don't import the Main class but obtain it
// via the other means, like the "getDefinitionByName" method.
// Again, the fully qualified class name is to be provided.
var aMain:Class = getDefinitionByName("Main") as Class;
stage.addChild(new aMain as DisplayObject);
// Remove this instance as it no longer needed for anything.
parent.removeChild(this);
}
}
I found a solution that works with ASC2 / AIR SDK. Although his example preloader extends Sprite, and I believe you need to extend MovieClip to make it work, since you need a frame 2. And you need a gotoAndStop(2) once it has finished loading itself. Additional information here. Man, it's not a good sign when all your reference links go through web.archive.org!
I'm using the code below to have button "legalBtn" access the layer and instance name of "legalOverlay." Then after the legalese has been read, the enduser can close the "legalOverlay" via "closeBtn" and return to the last frame of the banner ad. The code below has no compiler errors, but the "legalBtn" is still not working. Any ideas?
import flash.events.MouseEvent;
function init(){
legalBtn.addEventListener(MouseEvent.CLICK, legalClick);
legalBtn.visible=true;
legalOverlay.clickthru.addEventListener(MouseEvent.CLICK);
legalOverlay.clickthru.buttonMode=true;
legalOverlay.closeBtn.addEventListener(MouseEvent.CLICK);
legalOverlay.closeBtn.buttonMode=true;
legalOverlay.visible=false;
}
function legalClick(e:MouseEvent){
if(legalOverlay.visible==true){
legalOverlay.visible=false;
} else {
legalOverlay.visible=true;
}
}
stop();
You have to call the init() function to add the click event listener on your legalBtn object and make it visible.
i have got a problem and cannot figure out. Everything is fine when i test the scene, i have added stop(); to my movie clip timeline and everything is fine until no code is added to the main stage. As soon as i start adding code to the stage, it starts looping? Because of this i'm stuck with a problem and cannot even develop further, because even mouse click events wont work of that looping... The code i am trying to add is just a simple move layer off stage after click on play button:
import fl.transitions.Tween;
import fl.transitions.easing.*;
import fl.transitions.TweenEvent;
introScreen.play_btn.addEventListener(MouseEvent.CLICK, clickAway);
function clickAway(event:MouseEvent):void
{
moveScreenOff(introScreen);
}
function moveScreenOff(screen:MovieClip):void
{
//Move the screen off...
var introTween = new Tween(screen,"x",Strong.easeInOut,screen.x,(screen.width)*-1,1,true);
//When the motion has finished...
introTween.addEventListener(TweenEvent.MOTION_FINISH, tweenFinish);
function tweenFinish(e:TweenEvent):void
{
trace("tweenFinish");
//Establish the game state...
gameState = STATE_INIT_GAME;
trace(gameState);
//Fire off the gameLoop function at the frame rate of the movie...
addEventListener(Event.ENTER_FRAME, gameLoop);
}
}
The reason your animations are looping continuously is because you have errors in your code.
Access of undefined property gameState.
Access of undefined property STATE_INIT_GAME.
Access of undefined property gameState.
Access of undefined property gameLoop.
You are trying to reference members that haven't been created yet or don't exist. Your main timeline starts at frame 1 with the code you referenced trying to access those variables and the gameLoop method. You need to setup the variables in the first frame to allow them to be referenced. i.e. under your import statements:
import fl.transitions.Tween;
import fl.transitions.easing.*;
import fl.transitions.TweenEvent;
var gameState:String;
const STATE_INIT_GAME:String = "GAME_INIT";
then you need to add the gameLoop function:
function gameLoop(e:Event):void {
trace('game loop running');
}
If you don't want those variables and that function setup there then you need to go to the frame using gotoAndStop or gotoAndPlay where those functions and variables can be declared and/or initialized, and stored into memory. Then they will be accessible.
Hello I have not used flash in years, and need to use some old tracking code in my new AS3 banner. I noticed that in 3.0 you can't place actionscript on objects themselves, just on the timeline.
I need to convert this As2 script which i would normally have on a button labeled 'my_button'
on (release) {
getURL (_level0.clickTag, "_blank");
}
What is the equivalent code snippet to use on the timeline for my button labeled 'my_button'?
This is Google's clickTag suggestion:
import flash.events.MouseEvent;
import flash.net.URLRequest;
// ......
someButton_or_displayObject_to_receive_mouseClick.addEventListener(MouseEvent.CLICK,
function(event: MouseEvent) : void {
flash.net.navigateToURL(new URLRequest(root.loaderInfo.parameters.clickTAG), "_blank");
}
);
I saw a few diffrent examples, but none of them were identical to the method I use;
This is a full version, just copy and past and add in your URL AS3
import flash.events.MouseEvent;
import flash.net.URLRequest;
// add event listener to listen for "btnOpen" click
btnOpen.addEventListener(MouseEvent.CLICK,openFuction);
// add our openFuction
function openFuction(e:MouseEvent){
var openPage:URLRequest=new URLRequest("https://mysite.co.uk")
navigateToURL(openPage,"_blank");
}
There's another way, as well, which doesn't necessarily rely on the use of the ExternalInterface class. You could also try something like this (assuming your object on the stage has an instance name of "mybtn_mc":
mybtn_mc.addEventListener(MouseEvent.CLICK, openWebpage);
//
function openWebpage(e:MouseEvent):void {
var my_url:URLRequest = new URLRequest("http://stackoverflow.com/questions/15580069/geturl-in-as3-how-to/15639569");
flash.net.navigateToURL(my_url, "_self");
}
// if you want the object to act like buttons do in AS2
// with the handcursor effect when you mouse over them,
// you would include the following lines:
mybtn_mc.buttonMode = true;
mybtn_mc.useHandCursor = true;
This is written in timeline style, which is not something I approve of. But I sense you're not even close to ready to earning about Classes and how they work.
myButton.addEventListener(MouseEvent.CLICK, openWebpage);
function openWebpage(e:MouseEvent):void {
if (ExternalInterface.available) {
var callReturn:String = ExternalInterface.call('function(){window.open("http://www.yourURL.com", "_blank", "top=0,left=0,width=800,height=600");}');
}
}
Note that you should not be trying to reach outside the scope of the current MC, but how to do something else is beyond the scope of this answer har har. If interested, do a search on Dependency Injection.
this is a follow up question to this question
i have never actually got the flash-actionscript code execution order.
in flash pro i have an instance of a moveiclip on stage in frame one named tree1 and on frame 3 i have on the stage tree3.
in the document class i have this code:
stop();
var scaleFactor:Number = tree1.scaleX;
gotoAndStop(3);
tree3.scaleX = scaleFactor;
while this works when testing on the desktop, this app will go mobile at the end
is this the correct way to go or should i register for a frameComplete event before accessing instances on a certain frame
So, just dont use the Document Class cause you will need to declare all the scenes from the beginning and will be complicate to manage each scene.
I suggest you to instance a simple MovieClip linked with his own class like the example SceneTree, put it on each Keyframe. You will have more control when you are entering or exiting each frame.
package {
import flash.display.MovieClip;
import flash.events.Event;
public class SceneTree extends MovieClip {
public function SceneTree() {
super();
this.addEventListener(Event.ADDED_TO_STAGE, Init);
this.addEventListener(Event.REMOVED_FROM_STAGE, removed);
}
protected function Init (event:Event):void{
trace("added")
}
protected function removed (event:Event):void{
trace("removed")
}
}
}
waiting for Event.FRAME_CONSTRUCTED is the correct way whenever accessing assets on a timeline
it insures all assets have been created