I created a button that looks up the coordinates of the device. There is no errors in the code but for some reason which is eluding me, the event is not being triggered.
Here is my code:
protected function lblCheckIn_clickHandler(event:MouseEvent):void
{
if (Geolocation.isSupported)
{
lblLat.text = "Finding Location...";
geo.addEventListener(GeolocationEvent.UPDATE, onUpdate);
}
else
{
lblLat.text = "Geolocation is not supported on this device.";
}
}
Later on I have the event code:
protected function onUpdate(event:GeolocationEvent):void
{
if (event.horizontalAccuracy <= 10)
{
Lat = event.latitude.toString();
Long = event.longitude.toString();
lblLat.text = Lat;
lblLong.text = Long;
geo.removeEventListener(GeolocationEvent.UPDATE, onUpdate);
navigator.pushView(PersonSelect);
}
else
{
lblLat.text = "Updating";
}
}
Oh, and I also did the usual imports
import flash.filesystem.File;
import flash.sensors.Geolocation;
import flash.events.GeolocationEvent
import spark.events.ViewNavigatorEvent
import flash.utils.ByteArray;
Any clues as to why my event isnt calling?
Have you instantiated an instance of geo?
if (Geolocation.isSupported)
{
lblLat.text = "Finding Location...";
geo = new Geolocation();
geo.addEventListener(GeolocationEvent.UPDATE, Update);
}
I worked out the ultimate cause of this specific problem. It stems from Flash Builder not installing the complete Android SDK or the IOS SDK. Once I manually installed these by copying the SDK folders to their correct paths in Adobe Flash Builder, my GPS events were called successfully.
To sum up, if you get this trouble where the code and everything looks alright but it wont call up your events, then check to make sure that your latest SDKs for Flex are installed correctly for Android and or iOS
Related
I googled but didn't find a post for Flex mobile..
All I want for now is display an user agreement popup from TabbedViewNavigatorApplication when the user uses the app for the first time
var agreementView: UserAgreement = new UserAgreement();
PopUpManager.addPopUp(agreementView, this,true);
PopUpManager.centerPopUp(agreementView);
but maybe more later.
Please help..
What i did in my desktop air app;
I guess this will work at a mobile app also.
Make sure you have write access;
open yourproject-app.mxml scroll down to the end of the document. In the section, uncomment the following permission:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
Now you can create files like for example an sqlite database.
At the applicationcomplete call the function checkFirstRun:
// functions to check if the application is run for the first time (also after updates)
// so important structural changes can be made here.
public var file:File;
public var currentVersion:Number;
private function checkFirstRun():void
{
//get the current application version.
currentVersion=getApplicationVersion();
//get versionfile
file = File.applicationStorageDirectory;
file= file.resolvePath("Preferences/version.txt");
if(file.exists)
{
checkVersion();
}
else
{
firstRun(); // create the version file.
}
}
public function getApplicationVersion():Number
{
var appXML:XML = NativeApplication.nativeApplication.applicationDescriptor;
var ns:Namespace = appXML.namespace();
var versionnumber:Number =Number(appXML.ns::versionNumber);
return versionnumber;
}
private function checkVersion():void
{
var stream:FileStream= new FileStream();
stream.open(file,FileMode.READ);
var prevVersion:String = stream.readUTFBytes(stream.bytesAvailable);
stream.close();
if(Number(prevVersion)<currentVersion)
{
// if the versionnumber inside the file is older than the current version we go and run important code.
// like alternating the structure of tables inside the sqlite database file.
runImportantCode();
//after running the important code, we set the version to the currentversion.
saveFile(currentVersion);
}
}
private function firstRun():void
{
// at the first time, we set the file version to 0, so the important code will be executed.
var firstVersion:Number=0;
saveFile(firstVersion);
// we also run the checkversion so important code is run right after installing an update
//(and the version file doesn't exist before the update).
checkFirstRun();
}
private function saveFile(currentVersion:Number):void
{
var stream:FileStream=new FileStream();
stream.open(file,FileMode.WRITE);
stream.writeUTFBytes(String(currentVersion));
stream.close();
}
private function runImportantCode():void
{
// here goes important code.
// make sure you check if the important change previously has been made or not, because this code is run after each update.
}
Hope this helps.
Greets, J.
Some you need to store whether the user has agreed to the agreement or not. IF they haven't agreed, then show it.
One way to do this would be to store a value in a shared object. Another way to do this would be to use a remote service and store such data in a central repository. I assume you'll want the second; so you can do some form of tracking against the number of users using your app.
I'm new to Flex and am trying to port a pure Flash/AS3 card game to Flex 4.5.
It works mostly well, but I'm missing few puzzle parts there:
I've created a custom component based on UIComponent representing a deck of cards (which are an array of Sprites or MovieClips):
In the original pure Flash/AS3 game I was using Tween for the 3 cards at the table - to show the game user, who has put which card (by sliding them towards playing table middle):
import fl.transitions.*;
import fl.transitions.easing.*;
public class Deck extends UIComponent {
private var _card:Array = new Array(3);
private var _tween:Array = new Array(3);
....
override protected function createChildren():void {
_tween[YOU] = new Tween(_card[0], 'y', Regular.easeOut, _card[0].y + 40, _card[0].y, .5, true);
_tween[LEFT] = new Tween(_card[1], 'x', Regular.easeOut, _card[1].x - 40, _card[1].x, .5, true);
_tween[RIGHT] = new Tween(_card[2], 'x', Regular.easeOut, _card[2].x + 40, _card[2].x, .5, true);
....
However Flash Builder 4.5 doesn't seem to know fl.transitions.* packages at all?
Does anybody please have an advice on how to use Tween here?
Like I've written the rest (my custom Flex component, moving card-Sprites around, etc.) works well. Only the Tween lines had to be commented.
Thank you!
Alex
Take a look at the Tweener class on Google Code. With it you can specify and object, and a map of its properties and their desired values, along with time, and it will 'tween' those properties from their current to their desired values.
Tweener.addTween(yourCard, {y:50, time:1});//for a 1 second tween
My first knee-jerk reaction has been to add flash.swc (delivered by Flash CS Pro) to the Flex build path and then:
import fl.transitions.*;
import fl.transitions.easing.*;
can be used again.
But in the long-term I will probably write my own function to move the playing cards and run it on Event.ENTER_FRAME. Because I don't want to include Tweener or Tweenlite libraries for mere card sliding.
_tween[0] = _card[0].y;
_tween[1] = _card[1].x;
_tween[2] = _card[2].x;
....
_card[0].y = _tween[0] + 20;
addEventListener(Event.ENTER_FRAME, slideCardYou);
_card[1].x = _tween[1] - 20;
addEventListener(Event.ENTER_FRAME, slideCardLeft);
_card[2].x = _tween[2] + 20;
addEventListener(Event.ENTER_FRAME, slideCardRight);
....
private function slideCardYou(event:Event):void {
if (_card[0].y-- < _tween[0])
removeEventListener(Event.ENTER_FRAME, slideCardYou);
}
private function slideCardLeft(event:Event):void {
if (_card[1].x++ > _tween[1])
removeEventListener(Event.ENTER_FRAME, slideCardLeft);
}
private function slideCardRight(event:Event):void {
if (_card[2].x-- < _tween[2])
removeEventListener(Event.ENTER_FRAME, slideCardRight);
}
Also I've looked at mx.effects.Tween and spark.effects.Animate but they seem to be more appropriate for UIComponents and not Sprites as in my case.
I'm building a flex application
It has a functionality that can upload files to server
The customer will want to open app by dragging file to the icon and the app will start and begin uploading. But I cannot find how to implement that
Can anyone help me? Any help or link will be great appreciated.
Edit: thanks to alxx
Here is my code
private function initComponents():void {
NativeApplication.nativeApplication.addEventListener(InvokeEvent.INVOKE, onInvokeEvent);
}
public function onInvokeEvent(invocation:InvokeEvent):void {
arguments = invocation.arguments;
currentDir = invocation.currentDirectory;
if(arguments.length > 0)
{
var dfile:File = new File(arguments[0]);
if(dfile.exists) {
if(ArrayUtil.getItemIndex(dfile.extension,ConfigManager.AllSupportedFileExtensions) > -1)
uploadQueue.push(dfile);
if(!logged)
Alert.show("Please login before upload");
}
}
}
Try listen to InvokeEvent.INVOKE of Application, as described here. You'll get full native path to dropped file in arguments array (just tested it myself.)
I used Flash player 10, and Flex SDK 3.4. The code as followings:
// Following comes callbacks
function imageLoadOpenCallback(evt:Event):void
{
trace("in--open");
}
function imageLoadCompleteCallback(evt:Event):void
{
trace("in--load");
var fr:FileReference = evt.target as FileReference;
trace(fr.data);
}
function imageLoadErrorCallback(evt:IOErrorEvent):void
{
trace("in--ioerror");
}
function imageSelectCancelCallback(evt:Event):void
{
trace("in cancel");
}
function imageSelectCallback(evt:Event):void
{
trace("in -- select");
for (var i:int=0; i<frl.fileList.length; i++)
{
frl.fileList[i].addEventListener(Event.OPEN, imageLoadOpenCallback);
frl.fileList[i].addEventListener(Event.COMPLETE, imageLoadCompleteCallback);
frl.fileList[i].addEventListener(IOErrorEvent.IO_ERROR, imageLoadErrorCallback);
frl.fileList[i].load();
trace(frl.fileList[i]);
trace(frl.fileList[i].creationDate);
trace(frl.fileList[i].creator);
trace(frl.fileList[i].data);
trace(frl.fileList[i].name);
}
}
// Following comes UI handlers
function onAddPictures():void
{
var imageFilter:FileFilter = new FileFilter("Images", "*.jpg;*.png");
frl.addEventListener(Event.SELECT, imageSelectCallback);
frl.addEventListener(Event.CANCEL, imageSelectCancelCallback);
frl.browse([imageFilter]);
}
Only the imageSelectCancelCallback handler get called when I select some files in the dialog. But no load/open/io_error handler get called at all. I have Google some code example, in which it used FileReference instead of FileReferenceList. I don't know the reason, could you please help me?
In Air the fileReference objects in fileReferenceList do not fire the complete event when doing fileList[i].load(). In a Flex project it works fine. Adobe has not responded to bug reports on this appropriately.
Make sure in your compiler settings for flex, that you have at least 10.0.0 for "Use a specific version".
The main reason to use FileReferenceList instead of FileReference would be if you need to upload multiple files at once. If you only want to allow uploading one file at once, simply use FileReference.
Some clarification: imageSelectCallback(), and NOT imageSelectCancelCallback(), should get called when you select some files in the file browser AND click OK. imageSelectCancelCallback() is only called when you click Cancel.
Other than that, I never used the load() API, but I did use the upload(URLRequest) API. I am not sure what's your use case, but if you need to upload an image to a server, you should use the upload() method.
Speaking of upload events, I experienced some reliability issues when listening to Event.COMPLETE events, so I actually got better results listening to DataEvent.UPLOAD_COMPLETE_DATA.
I'm looking for a way to find the status of a live stream through a VideoDisplay (or any other method really). I am interested to know if the stream is currently being published to or if the publisher has stopped. This is for a Flex/Flash ActionScript 3 project.
Is there a way to do this or is this ANOTHER oversight by adobe?
flex flash adobe adobe-flex actionscript
I've only found one solution, and that's using the NetStream object in combination with a video control.
The video control must be manually added to an
nsListen = new NetStream(nc);
nsListen.addEventListener(NetStatusEvent.NET_STATUS, nsListenHandler);
nsListen.play(streamname);
var v:Video = new Video();
v.attachStream(nsListen);
uicontrol.add(v);
Finally, the event status is returned in nsListenHandler:
private function nsListenHandler(e:Event):void
{
if(e is NetStatusEvent)
{
var nse:NetStatusEvent = NetStatusEvent(e);
if(nse.info.code == "NetStream.Play.Failed")
{
// Big error.
}
if(nse.info.code == "NetStream.Play.PublishNotify")
{
// Stream has just been published
}
if(nse.info.code == "NetStream.Play.UnpublishNotify")
{
// Stream has just been unpublished
}
trace(NetStatusEvent(e).info.code);
trace(NetStatusEvent(e).info.description);
}
}
Only this code wont do is tell you if a stream is already successfully being published to.
You can dig into NetStatusEvent events.
Check this live docs