The following code is used in a component I name FileUpload.mxml which is used in two three different sections of the flex application.
private var uploadURL:URLRequest = new URLRequest;
private var file:FileReference = new FileReference;
private var media:MediaFacade;
public function browse():void
{
var uUrl:String=""; // force
uploadURL=new URLRequest();
file=new FileReference();
configureListeners();
file.browse(getTypes());
}
private function configureListeners():void
{
file.addEventListener(Event.CANCEL, cancelHandler);
...
if (!Application.application.hasEventListener("uploadFileEvent")) {
Application.application.addEventListener("uploadFileEvent", uploadFile);
}
}
When it is used in the first instanced, it works fine, but when it is used in different sections it gets the following error from the code below:
Error #2037: Functions called in incorrect sequence, or earlier call was unsuccessful.
private function doUploadFile():void
{
try
{
file.upload(uploadURL);
}
catch (e:Error) {
trace(e.message);
}
}
It follows the same sequence every time, i.e., file=new FileReference; configureFileListeners(file); file.browse(); file.upload(uploadURL) but only works on the first instance of the component being created.
Any ideas would be appreciated.
Thanks in advance.
Angus.
browse method only can be call directly from "User-Interaction" event such as CLICK event. If you wrap it in a function or class than that error will occur.
I'm a noob at Flex, but from what I've read:
Try calling .cancel() before .browse() to ensure no event is conflicting.
Related
Page object:
class Product {
get button() { return (".element"); }
}
module.exports = new Product();
Code
var pageObject = require('../pageObjects/product.page.js');
describe("Test", function () {
before( function () {
browser.url();
pageObject.button.click();
});
This returns an error when the test is ran of
pageObject.button.click is not a function
I have other page objects being utilized in the test outside of the before hook that are working fine. When I move the above object outside of the hook and into the main test, it still returns the same error. It appears to be setup the same as my other page objects, so I'm not sure what I am doing wrong.
Based on what i can see from you Product class, the getter button() is not returning the webElement. It is returning just a string .element.
Please try by updating the code as like below:
class Product {
get button() { return $(".element"); }
}
module.exports = new Product();
Thanks, Naveen
I'm implementing a DynamicItemStart button inside a Menu Controller. I'm loading the dynamic items for this button when Visual Studio starts. Everything is loaded correctly so the initialize method is called an I see all the new items in this Dynamic button. After the package is completely loaded I want to add more items to this Dynamic button, but since the package is already loaded the initialize method is not called again and I cannot see the new items in this Dynamic button. I only see the ones that were loaded when VS started.
Is there any way that I can force the update of this Dynamic button so it shows the new items?. I want to be able to update the VS UI after I added more items but outside the Initialize method.
The implementation I did is very similar to the one showed on this msdn example:
http://msdn.microsoft.com/en-us/library/bb166492.aspx
Does anyone know if an Update of the UI can be done by demand?
Any hints are greatly appreciated.
I finally got this working. The main thing is the implementation of a derived class of OleMenuCommand that implements a new constructor with a Predicate. This predicate is used to check if a new command is a match within the DynamicItemStart button.
public class DynamicItemMenuCommand : OleMenuCommand
{
private Predicate<int> matches;
public DynamicItemMenuCommand(CommandID rootId, Predicate<int> matches, EventHandler invokeHandler, EventHandler beforeQueryStatusHandler)
: base(invokeHandler, null, beforeQueryStatusHandler, rootId)
{
if (matches == null)
{
throw new ArgumentNullException("Matches predicate cannot be null.");
}
this.matches = matches;
}
public override bool DynamicItemMatch(int cmdId)
{
if (this.matches(cmdId))
{
this.MatchedCommandId = cmdId;
return true;
}
this.MatchedCommandId = 0;
return false;
}
}
The above class should be used when adding the commands on execution time. Here's the code that creates the commands
public class ListMenu
{
private int _baselistID = (int)PkgCmdIDList.cmdidMRUList;
private List<IVsDataExplorerConnection> _connectionsList;
public ListMenu(ref OleMenuCommandService mcs)
{
InitMRUMenu(ref mcs);
}
internal void InitMRUMenu(ref OleMenuCommandService mcs)
{
if (mcs != null)
{
//_baselistID has the guid value of the DynamicStartItem
CommandID dynamicItemRootId = new CommandID(GuidList.guidIDEToolbarCmdSet, _baselistID);
DynamicItemMenuCommand dynamicMenuCommand = new DynamicItemMenuCommand(dynamicItemRootId, isValidDynamicItem, OnInvokedDynamicItem, OnBeforeQueryStatusDynamicItem);
mcs.AddCommand(dynamicMenuCommand);
}
}
private bool IsValidDynamicItem(int commandId)
{
return ((commandId - _baselistID) < connectionsCount); // here is the place to put the criteria to add a new command to the dynamic button
}
private void OnInvokedDynamicItem(object sender, EventArgs args)
{
DynamicItemMenuCommand invokedCommand = (DynamicItemMenuCommand)sender;
if (null != invokedCommand)
{
.....
}
}
private void OnBeforeQueryStatusDynamicItem(object sender, EventArgs args)
{
DynamicItemMenuCommand matchedCommand = (DynamicItemMenuCommand)sender;
bool isRootItem = (matchedCommand.MatchedCommandId == 0);
matchedCommand.Enabled = true;
matchedCommand.Visible = true;
int indexForDisplay = (isRootItem ? 0 : (matchedCommand.MatchedCommandId - _baselistID));
matchedCommand.Text = "Text for the command";
matchedCommand.MatchedCommandId = 0;
}
}
I had to review a lot of documentation since it was not very clear how the commands can be added on execution time. So I hope this save some time whoever has to implement anything similar.
The missing piece for me was figuring out how to control the addition of new items.
It took me some time to figure out that the matches predicate (the IsValidDynamicItem method in the sample) controls how many items get added - as long as it returns true, the OnBeforeQueryStatusDynamicItem gets invoked and can set the details (Enabled/Visible/Checked/Text etc.) of the match to be added to the menu.
I am trying to make a simple mp3 player using flash. The songs are loaded using an XML file which contains the song list. I have "play" button with the instance name "PlayBtn". I have an actionscript file named "playctrl", the content of which are listed below:
package classes
{
import flash.media.Sound;
import flash.media.SoundChannel;
import flash.events.*;
import flash.events.MouseEvent;
import flash.net.URLRequest;
public class playctrl
{
private var MusicLoading:URLRequest;
private var music:Sound;
private var sc:SoundChannel;
private var currentSound:Sound;
private static var CurrentPos:Number;
private var xml:XML;
private var songlist:XMLList;
private static var currentIndex:Number;
public function playctrl()
{
music = new Sound();
currentSound= music;
CurrentPos = 0;
currentIndex = 0;
}
public function success(e:Event):void
{
xml = new XML(e.target.data);
songlist = xml.song;
MusicLoading = new URLRequest(songlist[0].file);
music.load(MusicLoading);
}
public function playSong(e:Event):void
{
if(sc != null)
sc.stop();
sc = currentSound.play(CurrentPos);
trace("HELLO !!!");
}
}
}
I have a second file named "play.as", the content of which is listed below:
import classes.playctrl;
var obj:playctrl = new playctrl();
var XMLLoader:URLLoader = new URLLoader(); //XML Loader
XMLLoader.addEventListener(Event.COMPLETE, obj.success);
XMLLoader.load(new URLRequest("playlist.xml"));
PlayBtn.addEventListener(MouseEvent.CLICK, obj.playSong);
However on clicking the play button, I notice that the function playSong() is called 7-8 times(check by printing an error msg. inside the function) resulting in overlapped audio output and the player crashing as a result. The function should be called only once when the MouseEvent.CLICK is triggered. Please help ...
interestingly, sound object doesn't have a built-in "isPlaying" boolean property (strange), so you could just create your own.
var isPlaying:Boolean
function playSong():void
{
if(!isPlaying)
sound.play();
}
function stopSong():void
{
if(isPlaying)
{
channel.stop();
isPlaying = false;
}
just a note: by convention, class names are capitalized camel case while instance names are uncapitalized camel case. so your playctrl.as class file should (or could) be PlayCtrl.as, and your PlayBtn instance should (or could) be playBtn.
Edit:
The title of your question is a bit misleading, the answer I gave you is a solution to the question expressed in the title.
Looking at your code, I would look at separating the concerns, on one hand you want to load the song data, on the other hand you want to control the sounds. I would implement separate classes for each concern. If you create a separate class for your player control, you'll be able to dispatch event within that class without the event bubbling all over your app and calling your functions several times.
//Previous answer
You could do this by implementing a Boolean that would be set when the sound is stopped or played.
In any case here's another way to filter unwanted clicks
private function playSong(event:MouseEvent ):void
{
// set up a conditional to identify your button ,
// here's an example...
if( event.currentTarget.name is "PlayBtn" )
{
//do whatever
//then...
event.stopImmediatePropagation();
}
}
This being said, in your case , it sounds like a bit of a quick fix since a MouseEvent shouldn't trigger the play function several times...
It would make sense to debug your code in order to understand why several events are dispatched after a Mouse click
private var _isPlaying:Boolean;
public function playSong(e:Event):void
{
if(sc != null)
{
sc.stop();
_isPlaying = false;
}
if( !_isPlaying )
{
sc = currentSound.play(CurrentPos);
_isPlaying = true;
trace("HELLO !!!");
}
}
Below is my class, which simply reads an xml file and provides the contents in e4x format. Unfortunately, after the constructors executes and sets the xmlProperties property with the expected values, it some how becomes null. Anyone know what I'm doing wrong?
public class WebService
{
private var _propertiesReader:HTTPService;
private var _xmlProperties:XML;
public function WebService()
{
_propertiesReader = new HTTPService();
_propertiesReader.url = "../resources/properties.xml";
_propertiesReader.resultFormat = "e4x";
_propertiesReader.contentType = "application/xml";
_propertiesReader.addEventListener(ResultEvent.RESULT, function(event:ResultEvent):void
{
_xmlProperties = XML(event.result);
});
_propertiesReader.addEventListener(FaultEvent.FAULT, function(event:FaultEvent):void
{
Alert.show("Unable to load properties content: " + event.fault.message + "\nPlease try again later.", "Properties File Load Error");
});
_propertiesReader.send();
}
public function get xmlProperties():XML
{
return _xmlProperties;
}
}
_xmlProperties is being set by a File Load call (via a callback event). It is not being set directly in the constructor.
Are you sure you are waiting for the call to finish and the callback event to fire before you check the value of _xmlProperty?
I am trying to write an application, but it is constantly crashing when using the uiimagepickercontroller. I thought that it might be because I was not disposing of the picker after each use, but it will often freeze up on first run as well. Usually I'll take a picture and it just freezes, never asking to "use" the picture.
Do you have any suggestions? Here is my code. Has anyone gotten this to work?
public override void ViewDidLoad ()
{
base.ViewDidLoad ();
myPicker = new UIImagePickerController();
myPicker.Delegate = new myPickerDelegate(this);
myAlbumButton.Clicked += delegate {
if(UIImagePickerController.IsSourceTypeAvailable(UIImagePickerControllerSourceType.PhotoLibrary)){
myPicker.SourceType = UIImagePickerControllerSourceType.PhotoLibrary;
myPicker.AllowsEditing = true;
this.PresentModalViewController (myPicker, true);
}else{
Console.WriteLine("cannot get album");
}
};
myCameraButton.Clicked += delegate {
if(UIImagePickerController.IsSourceTypeAvailable(UIImagePickerControllerSourceType.Camera)){
myPicker.SourceType = UIImagePickerControllerSourceType.Camera;
//myPicker.AllowsEditing = true;
this.PresentModalViewController (myPicker, true);
}else{
Console.WriteLine("cannot get camera");
}
};
}
private class myPickerDelegate : UIImagePickerControllerDelegate
{
private TestView _vc;
public myPickerDelegate ( TestView controller):base()
{
_vc = controller;
}
public override void FinishedPickingImage (UIImagePickerController myPicker, UIImage image, NSDictionary editingInfo)
{
// TODO: Implement - see: http://go-mono.com/docs/index.aspx?link=T%3aMonoTouch.Foundation.ModelAttribute
_vc.myImageView.Image = image;
myPicker.DismissModalViewControllerAnimated(true);
}
}
Try to call your event handlers code from the main thread by using BeginInvokeOnMainThread().
So my issue was very similar.
Instead of having a delegate class, I had the delegates inline for the picker.
For some reason the app froze every time after talking the image, not stopping in any breakpoint after that.
The solution that worked for me was to use this book:
http://www.scribd.com/doc/33770921/Professional-iPhone-Programming-with-MonoTouch-and-NET-C