I have a Flash slideshow that plays SWFs listed in an XML file. I would like to have the upcoming SWF load while the current one displays. I've tried all sorts of combinations of LoadMovie and LoadMovieNum, including creating an empty movie clip, but there's something I'm just not getting.
Right now, after making the first round through all the files, it transitions smoothly from slide to slide, but I'd like for it to preload so that it transitions without the "Loading..." screen the first time around.
It can be viewed here: slideshow
Where should I put the LoadMovie line to load the next file (image[p+1]), and how should it look?
function loadXML(loaded) {
if (loaded) {
xmlNode = this.firstChild;
image = [];
description = [];
total = xmlNode.childNodes.length;
for (i=0; i<total; i++) {
image[i] = xmlNode.childNodes[i].childNodes[0].firstChild.nodeValue;
description[i] = xmlNode.childNodes[i].childNodes[1].firstChild.nodeValue;
}
firstImage();
} else {
content = "file not loaded!";
}
}
xmlData = new XML();
xmlData.ignoreWhite = true;
xmlData.onLoad = loadXML;
xmlData.load("xmlfile.xml");
/////////////////////////////////////
back_btn.onRelease = function ()
{
backImage();
};
next_btn.onRelease = function ()
{
nextImage();
};
p = 0;
function nextImage() {
if (p<(total-1)) {
p++;
trace(this);
_root.mc_loadfile.loadMovie (image[p]);
_root.movie_name.text = image[p];
next_btn._visible = true;
back_btn._visible = true;
if (getBytesLoaded() == getBytesTotal())
slideshow();
}
else if (p == (total-1)) {
p = 0;
firstImage();
}
}
function backImage() {
clearInterval(myInterval);
if (p>0) {
--p;
_root.mc_loadfile.loadMovie (image[p]);
_root.movie_name.text = image[p];
next_btn._visible = true;
if (p != 0) {
back_btn._visible = true;
}
else {
back_btn._visible = false;
}
slideshow();
}
}
I'd appreciate any help.
You can do it with the MovieClipLoader class. A brief tutorial can be found at actionscript.org, or you can check the docs on it.
Related
The focus moves to the next input field before the event is fired. Can anyone help me find the bug, or figure out how to find it myself?
The goal is to catch the keyup event, verify that it is tab or shift+tab, and then tab as though it were tabbing through a table. When the focus gets to the last input that is visible, the three rows (see fiddle for visual) should move together to reveal hidden inputs. Once to the end of the inputs in that row, the three rows will slide back down to the beginning again, kind of like a carriage return on a typewriter, or tabbing into a different row in a table.
Right now, the tab event is moving just the row that holds the focus, and it is moving it before my script even starts to run. I just need to know why this is happening so that I can research how to resolve it.
Any help you can offer is appreciated. Please let me know if you need more information.
P.S. Using jquery 1.9.1
Link to Fiddle
jQuery(document).ready(function ($) {
// bind listeners to time input fields
//$('.timeBlock').blur(validateHrs);
$('.timeBlock').keyup(function () {
var caller = $(this);
var obj = new LayoutObj(caller);
if (event.keyCode === 9) {
if (event.shiftKey) {
obj.dir = 'prev';
}
obj.navDates();
}
});
// bind listeners to prev/next buttons
$('.previous, .next').on('click', function () {
var str = $(this).attr('class');
var caller = $(this);
var obj = new LayoutObj(caller);
obj.src = 'pg';
if (str === 'previous') {
obj.dir = 'prev';
}
obj.navDates();
});
});
function LayoutObj(input) {
var today = new Date();
var thisMonth = today.getMonth();
var thisDate = today.getDate();
var dateStr = '';
var fullDates = $('.dateNum');
var splitDates = new Array();
this.currIndex = 0; //currIndex defaults to 0
this.todayIndex;
fullDates.each(function (index) {
splitDates[index] = $(this).text().split('/');
});
//traverse the list of dates in the pay period, compare values and stop when/if you find today
for (var i = 0; i < splitDates.length; i++) {
if (thisMonth === (parseInt(splitDates[i][0], 10) - 1) && thisDate === parseInt(splitDates[i][1], 10)) {
thisMonth += 1;
thisMonth += '';
thisDate += '';
if (thisMonth.length < 2) {
dateStr = "0" + thisMonth + "/";
}
else {
dateStr = thisMonth + "/";
}
if (thisDate.length < 2) {
dateStr += "0" + thisDate;
}
else {
dateStr += thisDate;
}
fullDates[i].parentNode.setAttribute('class', 'date today');
this.todayIndex = i;
break;
}
}
//grab all of the lists & the inputs
this.window = $('div.timeViewList');
this.allLists = $('.timeViewList ul');
this.inputs = $('.timeBlock');
//if input`isn't null, set currIndex to match index of caller
if (input !== null) {
this.currIndex = this.inputs.index(input);
}
//else if today is in the pay period, set currIndex to todayIndex
else if (this.todayIndex !== undefined) {
this.currIndex = this.todayIndex;
}
//(else default = 0)
//grab the offsets for the cell, parent, and lists.
this.winOffset = this.window.offset().left;
this.cellOffset = this.inputs.eq(this.currIndex).offset().left;
this.listOffset = this.inputs.offset().left;
//grab the width of a cell, the parent, and lists
this.cellWidth = this.inputs.outerWidth();
this.listWidth = this.inputs.last().offset().left + this.cellWidth - this.inputs.eq(0).offset().left;
this.winWidth = this.window.outerWidth();
//calculate the maximum (left) offset between the lists and the parents
this.offsetMax = (this.listWidth - this.winWidth);
//set default scroll direction as fwd, and default nav as tab
this.dir = 'next';
this.src = 'tab';
//grab the offsets for the cell, parent, and lists.
this.cellOffset = this.inputs.eq(this.currIndex).offset().left;
this.listOffset = this.inputs.eq(0).offset().left;
this.winOffset = this.allLists.parent().offset().left;
//calculate the maximum (left) offset between the lists and the parents
this.offsetMax = (this.listWidth - this.winWidth);
}
LayoutObj.prototype.focusDate = function () {
this.inputs.eq(this.currIndex).focus();
};
LayoutObj.prototype.slideLists = function (num) {
this.listOffset += num;
this.allLists.offset({ left: this.listOffset });
};
LayoutObj.prototype.navDates = function () {
if (!this.inWindow()) {
var slide = 0;
switch (this.src) {
case 'pg':
slide = this.winWidth - this.cellWidth;
break;
case 'tab':
slide = this.cellWidth + 1;
break;
default:
break;
}
if (this.dir === 'next') {
slide = -slide;
}
this.slideLists(slide);
}
this.focusDate();
};
LayoutObj.prototype.inWindow = function () {
//detects if cell intended for focus is visible in the parent div
if ((this.cellOffset > this.winOffset) && ((this.cellOffset + this.cellWidth) < (this.winOffset + this.winWidth))) {
return true;
}
else {
return false;
}
}
All it needed was 'keydown()' instead of 'keyup().'
I have this script where I can print the movie that i indicated in the code.
function print_page()
{
var my_pj = new PrintJob();
var myResult = my_pj.start();
if (myResult)
{
myResult = my_pj.addPage("img_mc", null, {printAsBitmap:true}, 1);
my_pj.send();
delete my_pj;
trace("ok");
}
}
I need to know, how to print some image that is outside the flahs... clicking in the MC.... but i need in AS2...
ty for help!
This is the only way i sucess print external image with PrintJob() and AS2
#include "mc_tween2.as"
_root.myholder.loadMovie("teste_labirinto.jpg");
_root.myholder._x = 0; //i set the x and y position of image out of the screen area!
_root.myholder._y = 990; //
function print_page()
{
var my_pj = new PrintJob();
var myResult = my_pj.start();
if (myResult)
{
my_pj.orientation = portrait;
myResult = my_pj.addPage("myholder", {xMin:0, xMax:600, yMin:0, yMax:800}, {printAsBitmap:true}, 1);
my_pj.my_pj.send();
delete my_pj;
trace("ok");
}
}
btn.onRelease = function()
{
print_page();
};
I'm trying to use isVisible() within a loop to create a waitForElement type of a function for my iOS UIAutomation. When I try to use the following code, it fails while waiting for an element when a new screen pops up. The element is clearly there because if I do a delay(2) before tapping the element it works perfectly fine. How is everyone else accomplishing this, because I am at a loss...
Here's the waitForElement code that I am using:
function waitForElement(element, timeout, step) {
if (step == null) {
step = 0.5;
}
if (timeout == null) {
timeout = 10;
}
var stop = timeout/step;
for (var i = 0; i < stop; i++) {
if (element.isVisible()) {
return;
}
target.delay(step);
}
element.logElement();
throw("Not visible");
}
Here is a simple wait_for_element method that could be used:
this.wait_for_element = function(element, preDelay) {
if (!preDelay) {
target.delay(0);
}
else {
target.delay(preDelay);
}
var found = false;
var counter = 0;
while ((!found) && (counter < 60)) {
if (!element.isValid()) {
target.delay(0.5);
counter++;
}
else {
found = true;
target.delay(1);
}
}
}
I tend to stay away from my wait_for_element and look for any activityIndicator objects on screen. I use this method to actual wait for the page to load.
this.wait_for_page_load = function(preDelay) {
if (!preDelay) {
target.delay(0);
}
else {
target.delay(preDelay);
}
var done = false;
var counter = 0;
while ((!done) && (counter < 60)) {
var progressIndicator = UIATarget.localTarget().frontMostApp().windows()[0].activityIndicators()[0];
if (progressIndicator != "[object UIAElementNil]") {
target.delay(0.25);
counter++;
}
else {
done = true;
}
}
target.delay(0.25);
}
Here is a simple and better one using recursion. "return true" is not needed but incase u want it.
waitForElementToDismiss:function(elementToWait,waitTime){ //Using recursion to wait for an element. pass in 0 for waitTime
if(elementToWait && elementToWait.isValid() && elementToWait.isVisible() && (waitTime < 30)){
this.log("Waiting for element to invisible");
target.delay(1);
this.waitForElementToDismiss(elementToWait, waitTime++);
}
if(waitTime >=30){
fail("Possible login failed or too long to login. Took more than "+waitTime +" seconds")
}
return true;
}
Solution
I know this is an old question but here is my solution for a situation where I have to perform a repetitive task against a variable timed event. Since UIAutomation runs on javascript I use a recursive function with an empty while loop that checks the critical control state required before proceeding to the next screen. This way one never has to hard code a delay.
// Local target is the running simulator
var target = UIATarget.localTarget();
// Get the frontmost app running in the target
var app = target.frontMostApp();
// Grab the main window of the application
var window = app.mainWindow();
//Get the array of images on the screen
var allImages = window.images();
var helpButton = window.buttons()[0];
var nextButton = window.buttons()[2];
doSomething();
function doSomething ()
{
//only need to tap button for half the items in array
for (var i=0; i<(allImages.length/2); i++){
helpButton.tap();
}
//loop while my control is NOT enabled
while (!nextButton.isEnabled())
{
//wait
}
//proceed to next screen
nextButton.tap();
//go again
doSomething();
}
I'm using code for the open source MP3 player Howler and trying to port it to a Spark MobileApplication type. I'm getting a null pointer exception and I have no idea what's causing it. I've tried debugging extensively with breakpoints at what I think is causing the error, and set breakpoints in the untouched Howler project but all the variables in scope seem to be identical between my non-working project, and the Howler project. The only thing I can think of is that Howler uses MX components and I am using spark. I've pasted all my code below (which is very long) but I've bolded the lines that are throwing the error. The error occurs immediately after I choose a folder in the browse folder dialog.
<?xml version="1.0" encoding="utf-8"?>
<s:View xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark" title="Home"
xmlns:Comp="components.*" xmlns:display="flash.display.*">
<s:Button id="browse" x="546" y="43" label="Open Directory" click="browseForFolder()"/>
<s:DataGrid id="dgPlaylist" width="82" height="141" itemRenderer="components.DurationFormatter">
</s:DataGrid>
<s:Button id="btnForward" x="187" y="126" label="Forward"/>
<s:Button id="btnPause" x="90" y="39" label="Pause"/>
<s:Button id="btnBack" x="55" y="166" label="Back" click="changeSoundIndex(-1)"/>
<s:Button id="btnPlay" x="336" y="199" label="Button"/>
<s:Button id="btnStop" x="366" y="89" label="Stop"/>
<s:VScrollBar id="sldrPosition" x="280" y="43" mouseDown="thumbTimer.stop()"
mouseUp="thumbTimer.start()"
/>
<s:VScrollBar id="sldrVolume" x="265" y="234" change="ChangeSoundTransform()"
/>
<s:RichText id="txtID3" x="236" y="41" width="99">
</s:RichText>
<fx:Declarations>
</fx:Declarations>
<fx:Script>
<![CDATA[
import com.ericcarlisle.PlayList;
import com.ericcarlisle.PlayModes;
import com.ericcarlisle.Utility;
import flash.desktop.NativeDragManager;
import flash.media.Sound;
import mx.core.UIComponent;
import mx.events.CloseEvent;
import mx.events.DragEvent;
import org.osmf.traits.PlayTrait;
import spark.components.DataGrid;
// Player properties
private var playMode:String = "STOP";
private var volume:uint;
private const panning:int = 0;
private var selectedFileCount:uint;
private var loadedFileCount:uint;
private var soundIndex:uint;
// Player objects
private var SoundObj:Sound;
private var Channel:SoundChannel;
private var Transform:SoundTransform;
private var thumbTimer:Timer;
private var PlayList:com.ericcarlisle.PlayList;
private var SoundFilter:FileFilter = new FileFilter("Sounds", "*.mp3;*.wav");
//private var PlaylistFilter:FileFilter = new FileFilter("Sounds", "*.pls;*.m3u");
// Visualization objects.
private var Spectrum:ByteArray;
private const VISUALIZER_HEIGHT:Number = 50;
private const VISUALIZER_COLOR:Number = 0x336699;
// ID3 and other metadata
private var ID3:ID3Info;
private var Duration:int;
/*---------- PLAYER INITIALIZER ----------*/
// Initialization function used to add event handlers and set initial settings.
private function init():void
{
// Set player initial settings.
playMode = PlayModes.STOP;
selectedFileCount = 0;
loadedFileCount = 0;
soundIndex = 0;
// Set initial application height.
//this.height= cvsControlBar.height + cvsPlayer.height;
// Set volume.
volume = sldrVolume.value;
// Instantiate sound objects.
Channel = new SoundChannel();
Transform = new SoundTransform(volume/100, panning);
PlayList = new com.ericcarlisle.PlayList();
// Bind playlist data to datagrid.
dgPlaylist.dataProvider = PlayList.Sounds;
// Create a timer to control the song position hslider.
thumbTimer = new Timer(500);
thumbTimer.addEventListener(TimerEvent.TIMER, onTimerTick);
// Create event handlers for application.
this.addEventListener(IOErrorEvent.IO_ERROR, onIOError);
this.addEventListener(Event.ENTER_FRAME, onEnterFrame);
this.addEventListener(NativeDragEvent.NATIVE_DRAG_ENTER, onPlayerDragInto);
this.addEventListener(NativeDragEvent.NATIVE_DRAG_DROP, onPlayerDropInto);
this.addEventListener(InvokeEvent.INVOKE, onInvoke);
}
/*---------- DRAG/DROP & FILE MANAGEMENT ----------*/
private function onInvoke(event:InvokeEvent):void
{
if (event.arguments.length > 0)
{
var file:File;
var files:Array = new Array();
for (var i:int = 0; i < event.arguments.length; i++)
{
file = new File(event.arguments[i]);
files.push(file);
}
if (PlayList.Sounds.length > 0) removeAllSounds();
loadFiles(files);
}
}
// Handles file selection event dispatched by browse dialog.
private function onFileSelect(event:FileListEvent):void
{
loadFiles(event.files);
}
// Handles folder selection event dispatched by browse dialog.
private function onDirectorySelect(event:Event):void
{
var directory:File = event.target as File;
**loadFiles(directory.getDirectoryListing());**
}
// Loads a batch of files into the playlist.
private function loadFiles(files:Array):void
{
var file:File;
// Count the number of files selected. Only accept files with .mp3 extension.
selectedFileCount = 0;
for (var i:uint = 0; i < files.length; i++)
{
file = files[i];
if (file.extension == "mp3") selectedFileCount++;
}
// Reset the count on files currently loaded.
loadedFileCount = 0;
**// Set the player mode so that loaded files are played automatically.
if (PlayList.Sounds.length == 0) playMode = PlayModes.LOADTOPLAY;**
// Load files as sound objects.
for(var j:uint = 0; j < files.length; j++)
{
file = files[j];
if (file.extension == "mp3" || file.extension == "wav")
{
var sound:Sound = new Sound(new URLRequest(file.url));
sound.addEventListener(Event.ID3,onID3);
}
}
}
// Presents file browse (multiple file) dialog.
private function browseForFiles():void
{
var SoundFile:File = new File();
SoundFile.browseForOpenMultiple("Open", [SoundFilter]);//, PlaylistFilter]);
SoundFile.addEventListener(FileListEvent.SELECT_MULTIPLE, onFileSelect);
}
// Presents file browse (folder) dialog.
private function browseForFolder():void
{
var directory:File = File.documentsDirectory;
directory.browseForDirectory("Select Directory");
directory.addEventListener(Event.SELECT, onDirectorySelect);
}
// Accept files dragged into player.
private function onPlayerDragInto(event:Event):void
{
NativeDragManager.acceptDragDrop(this);
}
// Manages files dropped into player.
private function onPlayerDropInto(event:NativeDragEvent):void
{
// Accept only files.
if (event.clipboard.hasFormat(ClipboardFormats.FILE_LIST_FORMAT))
{
// Parse dragged contents into array of files.
var dragFiles:Array = event.clipboard.getData(ClipboardFormats.FILE_LIST_FORMAT) as Array;
// Load the files.
loadFiles(dragFiles);
}
}
/*---------- SOUND MANAGEMENT ----------*/
private function loadSound():void
{
SoundObj = new Sound();
SoundObj.load(new URLRequest(PlayList.Sounds[soundIndex]["url"]));
SoundObj.addEventListener(Event.COMPLETE, onSoundLoaded);
}
private function onSoundLoaded(event:Event):void
{
// Retrieve data for current sound from playlist.
var soundData:Object = PlayList.Sounds[soundIndex];
// Place ID3 information into the readout panel.
//txtID3.htmlText = Utility.ReadoutHTML(soundData["title"], soundData["track"], soundData["album"], soundData["artist"], soundData["year"], soundData["duration"]);
// Configure the holizontal slider to act as a playhead.
sldrPosition.maximum = soundData["duration"];
// Set the selected row in the playlist display.
dgPlaylist.selectedIndex = soundIndex;
// Start the player if the mode is correct.
if (playMode == PlayModes.LOADTOPLAY)
{
playSound();
}
else
{
playMode = PlayModes.LOADED;
}
}
// Plays the current sound.
public function playSound():void
{
// Load sound into channel.
Channel.stop();
Channel = SoundObj.play(sldrPosition.value,0,Transform);
playMode = PlayModes.PLAY;
// Start position timer.
thumbTimer.start();
// Configure UI controls.
btnPlay.visible = false;
btnPause.visible = true;
sldrPosition.enabled = true;
btnPlay.enabled = true;
btnStop.enabled = true;
setBackForwardButtons();
Channel.addEventListener(Event.SOUND_COMPLETE, onSoundComplete);
}
private function setBackForwardButtons():void
{
if (soundIndex == PlayList.Sounds.length-1 || PlayList.Sounds.length == 0)
{
btnForward.enabled = false;
}
else
{
btnForward.enabled = true;
}
if (soundIndex == 0 || PlayList.Sounds.length == 0)
{
btnBack.enabled = false;
}
else
{
btnBack.enabled = true;
}
}
// Stops the current sound.
public function stopSound():void
{
Channel.stop();
thumbTimer.stop();
sldrPosition.value = 0;
playMode = PlayModes.STOP;
//Visualizer.graphics.clear();
btnPlay.visible = true;
btnPause.visible = false;
}
// Pause a playing sound.
private function pauseSound():void
{
Channel.stop();
thumbTimer.stop();
btnPlay.visible = true;
btnPause.visible = false;
}
// Change the sound index
private function changeSoundIndex(delta:int):void
{
stopSound();
playMode = PlayModes.LOADTOPLAY;
soundIndex = soundIndex + delta;
loadSound();
}
// Change the volume and panning via the sound transform object.
private function ChangeSoundTransform():void
{
volume = Math.round(sldrVolume.value);
Channel.soundTransform = new SoundTransform(volume/100, panning);
}
// Handles event for sound completing.
private function onSoundComplete(event:Event):void
{
stopSound();
soundIndex++;
if (soundIndex < PlayList.Sounds.length)
{
playMode = PlayModes.LOADTOPLAY;
loadSound();
}
}
// Load ID3 information into local variables.
// Update the readout panel.
// Configure position slider.
private function onID3(event:Event):void
{
var sound:Sound = Sound(event.target);
ID3 = ID3Info(sound.id3);
Duration = Math.floor(sound.length);
// Load sound id3 data into the playlist.
PlayList.AddSound(ID3.songName, ID3.album, ID3.artist, ID3.track, ID3.year, ID3.genre, Duration, sound.url);
// Increment the loaded file count.
loadedFileCount++;
if (loadedFileCount == selectedFileCount * 2)
{
// Refresh the playlist so that new results will be visually displayed.
PlayList.Sounds.refresh();
// Set the count properties.
selectedFileCount = 0;
loadedFileCount = 0;
soundIndex = 0;
if (playMode == PlayModes.LOADTOPLAY) loadSound();
}
}
/*---------- VISUALIZATION ----------*/
private function UpdateVisualizer():void
{
// Instantiate a new byte array to contain spectrum data.
Spectrum = new ByteArray();
// Clear the visualizer graphics.
//Visualizer.graphics.clear();
// Dump the spectrum data into the byte array.
SoundMixer.computeSpectrum(Spectrum,false,0);
var f:Number;
var i:int;
var ave:int;
//Visualizer.graphics.lineStyle(1, VISUALIZER_COLOR,1);
//Visualizer.graphics.beginFill(VISUALIZER_COLOR, 0.75);
for (i = 0; i < 512; i=i+10)
{
f = Spectrum.readFloat();
//Visualizer.drawRoundRect(Math.floor(i*0.7) + 7, cvsReadout.height - 10, 4, -Math.abs(f) * (cvsReadout.height-10));
}
//Visualizer.graphics.endFill();
}
// Updates the position of the hslider thumb.
private function onTimerTick(event:TimerEvent):void
{
sldrPosition.value = Math.round(Channel.position);
}
// Update the wave visualizer if the sound is playing.
private function onEnterFrame(event:Event):void
{
if (playMode == PlayModes.PLAY)
{
UpdateVisualizer();
}
}
// Show application information.
private function showHowlerInfo():void
{
//cvsAbout.visible = true;
}
private function togglePlayList():void
{
}
private function onItemDoubleClick(event:Event):void
{
this.playMode = PlayModes.LOADTOPLAY;
thumbTimer.stop();
sldrPosition.value = 0;
loadSound();
}
/*---------- ERROR HANDLING ----------*/
// Handles IO errors.
private function onIOError(event:IOErrorEvent):void
{
//Alert.show("File load error: " + event.text);
}
private function startMove():void
{
stage.nativeWindow.startMove();
}
private function unloadSound():void
{
stopSound();
txtID3.text = "";
btnPlay.visible = true;
btnPause.visible = false;
btnPlay.enabled = false;
btnStop.enabled = false;
}
private function removeSound():void
{
var index:int = dgPlaylist.selectedIndex;
if (index >= 0)
{
if (index == soundIndex)
{
unloadSound();
}
PlayList.RemoveSoundAt(index);
PlayList.Sounds.refresh();
setBackForwardButtons();
}
}
private function removeAllSounds():void
{
unloadSound();
PlayList.Sounds.removeAll();
PlayList.Sounds.refresh();
setBackForwardButtons();
}
private function onKeyDown(event:KeyboardEvent):void
{
if (event.charCode.toString() == "8" || event.charCode.toString() == "127")
{
removeSound();
}
}
]]>
</fx:Script>
</s:View>
I'm new to Flex so I don't know if this is causing the problem or not, but the Howler app uses an MX:DataGrid defined like this:
<mx:DataGrid x="6"
y="7"
width="388"
height="310"
id="dgPlaylist"
keyDown="onKeyDown(event)"
dragMoveEnabled="true"
doubleClickEnabled="true"
dragEnabled="true"
dropEnabled="true"
dragComplete="onPlaylistDragDrop(event)"
itemDoubleClick="onItemDoubleClick(event)">
<mx:columns>
<mx:DataGridColumn width="168" headerText="Title" dataField="title" />
<mx:DataGridColumn width="160" headerText="Album" dataField="album"/>
<mx:DataGridColumn width="60" headerText="Duration" dataField="duration" textAlign="right" itemRenderer="components.DurationFormatter"/>
</mx:columns>
</mx:DataGrid>
It has additional columns that I'm not using. Could this be the cause?
We are going to need the error message. Generally what you are experiencing is called a null pointer exception ( just like the error said ). Which basically means you tried to access a property of an object that is null. For example, running the following code will cause the same problem
var arrayCollection:ArrayCollection;
arrayCollection.addItem( new Object() );
To fix your error, you should find the object that the error is referring to in your code and make sure it isn't null when your program executes whatever line it is complaining about, or add an if-loop in the event it is null.
I am using the following code to tween an movieclip once _global.choiceMade equals 1...
onClipEvent (load) {
import mx.transitions.Tween;
import mx.transitions.easing.*;
}
onClipEvent (enterFrame) {
if (_global.choiceMade == 1) {
var myTweenX:Tween = new Tween(this, "_x", mx.transitions.easing.Back.easeOut, this._x, -349, 0.5, True);
}
}
This is contained within each frame of the main timeline. The first time it runs fine but on the next frame it runs incredibly slow (takes about 12 seconds not 0.5 and is very choppy), if I then return to the first frame and run it again now this time it is extremely slow.
I can't work out why its doing this my CPU stays around 6-15% while its running so it can't be too demanding.
Updated to show rest of my code:
On main timeline have a frame each containing a movieclip. On the timeline of each of these movieclips contains:
//tint an object with a color just like Effect panel
//r, g, b between 0 and 255; amount between 0 and 100
Color.prototype.setTint = function(r, g, b, amount) {
var percent = 100-amount;
var trans = new Object();
trans.ra = trans.ga=trans.ba=percent;
var ratio = amount/100;
trans.rb = r*ratio;
trans.gb = g*ratio;
trans.bb = b*ratio;
this.setTransform(trans);
};//Robert Penner June 2001 - http://www.robertpenner.com
MovieClip.prototype.scaleXY = function(to){
this.onEnterFrame = function(){
this._alpha = to-(to-this._alpha)/1.2;
if(this._alpha > to-1 && this._alpha < to+1){
this._alpha = to;
delete this.onEnterFrame
}
}
}
scoreUpdated = 0;
Answer = 1;
_global.choiceMade = 0;
Buttons = new Array(this.buttonHolder.True, this.buttonHolder.False);
Answers = new Array(this.Correct, this.Wrong);
for (i=0; i<Answers.length; i++) {
Answers[i]._alpha = 0;
}
for (b=0; b<Buttons.length; b++) {
Buttons[b].thisValue = b;
}
In this movieclip there are two movieclip buttons (True and False) containing this code:
onClipEvent (enterFrame) {
this.onRollOver = function() {
this.gotoAndStop("over");
};
this.onRollOut = function() {
this.gotoAndStop("up");
};
this.onPress = function() {
this.gotoAndStop("down");
};
this.onReleaseOutside = function() {
this.gotoAndStop("up");
};
this.onRelease = function() {
this.gotoAndStop("down");
whichChoice = this;
_global.choiceMade = 1;
counter = 0;
};
if (_global.choiceMade == 1) {
this.enabled = false;
this._parent.scoreNow = _global.score;
this._parent.scoreOutOf = (this._parent._parent._currentframe)- 1 + ( _global.choiceMade);
if (thisValue == this._parent._parent.Answer && whichChoice == this) {
myColor = new Color(this);
myColor.setTint(0,204,0,13);
this._parent._parent.Answers[0]._alpha = 100;
this._parent._parent.Answers[0].scaleXY(100);
this.tick.swapDepths(1000);
if (counter == 0) {
_global.score++;
counter++;
}
}
else if (thisValue == this._parent._parent.Answer) {
myColor = new Color(this);
myColor.setTint(0,204,0,13);
this.tick.swapDepths(1000);
}
else if (whichChoice == this) {
this._parent._parent.Answers[1]._alpha = 100;
this._parent._parent.Answers[1].scaleXY(100);
myColor = new Color(this);
myColor.setTint(255,0,0,13);
this.cross.swapDepths(1000);
}
else {
myColor = new Color(this);
myColor.setTint(255,0,0,13);
myColor.setTint(255,0,0,13);
this.cross.swapDepths(1000);
}
}
}
The script at the top is on a movieclip these buttons are contained in called buttonHolder which does what it says, and tweens the buttons across the screen to reveal a next button once an answer is chosen.
From what I can see, as long as you have choiceMade == 1 you create a new effect! which is not ok. because in 1 sec at 15 fps you will have 15 tweens running :(
try yo set choiceMade = 0 or somehting else than 1
onClipEvent (enterFrame)
{
if (_global.choiceMade == 1)
{
_global.choiceMade = -1;
var myTweenX:Tween = new Tween(this, "_x", mx.transitions.easing.Back.easeOut, this._x, -349, 0.5, True);
}
}
Without seeing the rest of your code it's hard to see exactly what's going on. But it looks like you never change choiceMade and it continuously recreates the tween.
onClipEvent (enterFrame) {
if (_global.choiceMade == 1) {
var myTweenX:Tween = new Tween(this, "_x", mx.transitions.easing.Back.easeOut, this._x, -349, 0.5, True);
_global.choiceMade = 0;
}
}