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  • Chaining animations and memory management

    - by bryan1967
    Hey Everyone, Got a question. I have a subclassed UIView that is acting as my background where I am scrolling the ground. The code is working really nice and according to the Instrumentation, I am not leaking nor is my created and still living Object allocation growing. I have discovered else where in my application that adding an animation to a UIImageView that is owned by my subclassed UIView seems to bump up my retain count and removing all animations when I am done drops it back down. My question is this, when you add an animation to a layer with a key, I am assuming that if there is already a used animation in that entry position in the backing dictionary that it is released and goes into the autorelease pool? For example: - (void)animationDidStop:(CAAnimation *)theAnimation finished:(BOOL)flag { NSString *keyValue = [theAnimation valueForKey:@"name"]; if ( [keyValue isEqual:@"step1"] && flag ) { groundImageView2.layer.position = endPos; CABasicAnimation *position = [CABasicAnimation animationWithKeyPath:@"position"]; position.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear]; position.toValue = [NSValue valueWithCGPoint:midEndPos]; position.duration = (kGroundSpeed/3.8); position.fillMode = kCAFillModeForwards; [position setDelegate:self]; [position setRemovedOnCompletion:NO]; [position setValue:@"step2-1" forKey:@"name"]; [groundImageView2.layer addAnimation:position forKey:@"positionAnimation"]; groundImageView1.layer.position = startPos; position = [CABasicAnimation animationWithKeyPath:@"position"]; position.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear]; position.toValue = [NSValue valueWithCGPoint:midStartPos]; position.duration = (kGroundSpeed/3.8); position.fillMode = kCAFillModeForwards; [position setDelegate:self]; [position setRemovedOnCompletion:NO]; [position setValue:@"step2-2" forKey:@"name"]; [groundImageView1.layer addAnimation:position forKey:@"positionAnimation"]; } else if ( [keyValue isEqual:@"step2-2"] && flag ) { groundImageView1.layer.position = midStartPos; CABasicAnimation *position = [CABasicAnimation animationWithKeyPath:@"position"]; position.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear]; position.toValue = [NSValue valueWithCGPoint:endPos]; position.duration = 12; position.fillMode = kCAFillModeForwards; [position setDelegate:self]; [position setRemovedOnCompletion:NO]; [position setValue:@"step1" forKey:@"name"]; [groundImageView1.layer addAnimation:position forKey:@"positionAnimation"]; } } This chains animations infinitely, and as I said one it is running the created and living object allocation doesn't change. I am assuming everytime I add an animation the one that exists in that key position is released. Just wondering I am correct. Also, I am relatively new to Core Animation. I tried to play around with re-using the animations but got a little impatient. Is it possible to reuse animations? Thanks! Bryan

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  • WPF: Can I use VisualStateManager to change alignment?

    - by kennethkryger
    Hi, I've got this "object-stack" - Window --- Grid (VerticalAlignment = Stretch) ----- Border (VerticalAlignment = Stretch OR Top) The Border a primitive UserControl right now to keep things simple for me. I'd like to be able to use the VisualStateManager to toggle the VerticalAlignment-property of the Border, so that the "Normal-state" equals VerticalAlignment.Top and "Expanded-state" equals VerticalAlignment.Stretch. Is this possible? Also, I'd like to use an easing function, when swithing between the two states.

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  • What's a good 2nd level cache for JEE applications?

    - by Hank
    Can anyone recommend a good 2nd level object caching solution for JEE 6 applications, and give background to your recommendation? I'm using JPA 2.0 as persistence provider. I am particularly worried about having to run the cache client as a single-thread / singleton bean. Is that the case? If so, is that an issue? I've good experience using memcached from a PHP webapp, but PHP is of course single-threaded, so that was never an issue...

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  • Breakpoints dont work

    - by Ann
    Hi, All. When I set break point at some line and press Build&Go my breakpoints become yellow and my program continues. Nothing happens. I`ve unchecked Object Lazy ..., optimization levels, active target is Debug, load debugging symbols is checked. I also want to mention that my debugger never worked before.

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  • How to call notifyDataSetChanged() from a generic Adapter

    - by Matty F
    An OnItemClickListener for a ListView has the following method: @Override public void onItemClick(AdapterView<?> parent, View v, int position, long id) I'd like to have the adapter behind the ListView refresh, and I believe this is done through the use of: BaseAdapter.notifyDataSetChanged() How do I use the parent parameter in the onItemClick method to do this? So far I've tried: parent.getAdapter().notifyDataSetChanged(); This throws an error because the object returned is of class HeaderViewListAdapter, which for reasons unknown isn't a subclass of BaseAdapter.

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  • How can a 1Gb Java heap on a 64bit machine use 3Gb of VIRT space?

    - by Graeme Moss
    I run the same process on a 32bit machine as on a 64bit machine with the same memory VM settings (-Xms1024m -Xmx1024m) and similar VM version (1.6.0_05 vs 1.6.0_16). However the virtual space used by the 64bit machine (as shown in top under "VIRT") is almost three times as big as that in 32bit! I know 64bit VMs will use a little more memory for the larger references, but how can it be three times as big? Am I reading VIRT in top incorrectly? Full data shown below, showing top and then the result of jmap -heap, first for 64bit, then for 32bit. Note the VIRT for 64bit is 3319m for 32bit is 1220m. * 64bit * PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 22534 agent 20 0 3319m 163m 14m S 4.7 2.0 0:04.28 java $ jmap -heap 22534 Attaching to process ID 22534, please wait... Debugger attached successfully. Server compiler detected. JVM version is 10.0-b19 using thread-local object allocation. Parallel GC with 4 thread(s) Heap Configuration: MinHeapFreeRatio = 40 MaxHeapFreeRatio = 70 MaxHeapSize = 1073741824 (1024.0MB) NewSize = 2686976 (2.5625MB) MaxNewSize = -65536 (-0.0625MB) OldSize = 5439488 (5.1875MB) NewRatio = 2 SurvivorRatio = 8 PermSize = 21757952 (20.75MB) MaxPermSize = 88080384 (84.0MB) Heap Usage: PS Young Generation Eden Space: capacity = 268500992 (256.0625MB) used = 247066968 (235.62142181396484MB) free = 21434024 (20.441078186035156MB) 92.01715277089181% used From Space: capacity = 44695552 (42.625MB) used = 0 (0.0MB) free = 44695552 (42.625MB) 0.0% used To Space: capacity = 44695552 (42.625MB) used = 0 (0.0MB) free = 44695552 (42.625MB) 0.0% used PS Old Generation capacity = 715849728 (682.6875MB) used = 0 (0.0MB) free = 715849728 (682.6875MB) 0.0% used PS Perm Generation capacity = 21757952 (20.75MB) used = 16153928 (15.405586242675781MB) free = 5604024 (5.344413757324219MB) 74.24378912132907% used * 32bit * PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 30168 agent 20 0 1220m 175m 12m S 0.0 2.2 0:13.43 java $ jmap -heap 30168 Attaching to process ID 30168, please wait... Debugger attached successfully. Server compiler detected. JVM version is 14.2-b01 using thread-local object allocation. Parallel GC with 8 thread(s) Heap Configuration: MinHeapFreeRatio = 40 MaxHeapFreeRatio = 70 MaxHeapSize = 1073741824 (1024.0MB) NewSize = 1048576 (1.0MB) MaxNewSize = 4294901760 (4095.9375MB) OldSize = 4194304 (4.0MB) NewRatio = 8 SurvivorRatio = 8 PermSize = 16777216 (16.0MB) MaxPermSize = 67108864 (64.0MB) Heap Usage: PS Young Generation Eden Space: capacity = 89522176 (85.375MB) used = 80626352 (76.89128112792969MB) free = 8895824 (8.483718872070312MB) 90.0629940005033% used From Space: capacity = 14876672 (14.1875MB) used = 14876216 (14.187065124511719MB) free = 456 (4.3487548828125E-4MB) 99.99693479832048% used To Space: capacity = 14876672 (14.1875MB) used = 0 (0.0MB) free = 14876672 (14.1875MB) 0.0% used PS Old Generation capacity = 954466304 (910.25MB) used = 10598496 (10.107513427734375MB) free = 943867808 (900.1424865722656MB) 1.1104107034039412% used PS Perm Generation capacity = 16777216 (16.0MB) used = 11366448 (10.839889526367188MB) free = 5410768 (5.1601104736328125MB) 67.74930953979492% used

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  • How to check if a file is a DLL?

    - by PierreBdR
    Given a file, I want to check if this is a DLL, or a shared object (Linux) or a dylib (Mac OS X), or something different. My main interest is differentiating executable and DLL on Linux and Mac OS X. For windows, the extension should be enough for my problem. I already checked that the magic number technique doesn't work for Linux as executable and shared objects both have the same number.

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  • is there any way we can disable on mouse over event on certain columns of an data grid

    - by prince23
    hi, here wat i am trying to do is that on mouse over of first column i need to hit mouse MouseEnter event and show the pop up which i have kept there rest all other column i dnt need to to show the pop up so i am having this fuction there MouseLeave="Row_MouseLeave" <sdk:DataGrid MinHeight="100" x:Name="dgCounty" AutoGenerateColumns="False" VerticalAlignment="Top" Grid.Row="1" IsReadOnly="True" Margin="5,5,5,0" RowDetailsVisibilityChanged="dgCounty_RowDetailsVisibilityChanged" SelectionMode="Extended" RowDetailsVisibilityMode="VisibleWhenSelected" MouseEnter="dgCounty_MouseEnter" MouseLeave="dgCounty_MouseLeave" SelectionChanged="dgCounty_SelectionChanged" LoadingRow="dgCounty_LoadingRow1" UnloadingRow="dgCounty_UnloadingRow"> <sdk:DataGrid.Columns> <sdk:DataGridTemplateColumn> <sdk:DataGridTemplateColumn.CellTemplate> <DataTemplate> <Button x:Name="myButton" Width="24" Height="24" Click="Details_Click"> <Image x:Name="img" Source="Images/detail.JPG" Stretch="None"/> </Button> </DataTemplate> </sdk:DataGridTemplateColumn.CellTemplate> </sdk:DataGridTemplateColumn> <sdk:DataGridTemplateColumn Header="ID"> <sdk:DataGridTemplateColumn.CellTemplate> <DataTemplate > <sdk:Label Content="{Binding EmployeeID}" /> </DataTemplate> </sdk:DataGridTemplateColumn.CellTemplate> </sdk:DataGridTemplateColumn> <sdk:DataGridTemplateColumn Header="Name"> <sdk:DataGridTemplateColumn.CellTemplate> <DataTemplate > <sdk:Label Content="{Binding EmployeeFName}" MouseLeave="Row_MouseLeave" /> </DataTemplate> </sdk:DataGridTemplateColumn.CellTemplate> </sdk:DataGridTemplateColumn> <sdk:DataGridTemplateColumn Header="MailID"> <sdk:DataGridTemplateColumn.CellTemplate> <DataTemplate > <sdk:Label Content="{Binding EmployeeMailID}" MouseLeave="Row_MouseLeave" /> </DataTemplate> </sdk:DataGridTemplateColumn.CellTemplate> </sdk:DataGridTemplateColumn> </sdk:DataGrid.Columns> </sdk:DataGrid> in code behind void Row_MouseLeave(object sender, MouseEventArgs e) { Show.Visibility = Visibility.Collapsed; PoPGrid.Visibility = Visibility.Collapsed; } void Row_MouseEnter(object sender, MouseEventArgs e) { } the pop up her is like the ajax modal pop up wat we do in asp.net i am able to show data in pop up now the main issue is i need to show pop up only on the 2 column. rest all other column i need to hide the pop up when i move mouse over on that column. i am trying this concept it is not working is there any way i can achive it as i said only need to show pop up on mouse over of the 2 column thanks in advance prince

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  • How to parameterize @Scheduled(fixedDelay) with Spring 3.0 expression language?

    - by ngeek
    When using the Spring 3.0 capability to annotate the a scheduled task, I would like to set the fixedDelay as parameter from my configuration file, instead of hard-wiring it into my task class, like currently... @Scheduled(fixedDelay=5000) public void readLog() { ... } Unfortunately it seems that with the means of the Spring Expression Language (EL) @Value returns a String object which in turn is not able to be auto-boxed to a long value as required by the fixedDelay parameter. Thanks in advance for your help on this.

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  • c#: what is the purpose of wpf vs. winforms [closed]

    - by every_answer_gets_a_point
    i know wpf can be richer-looking, but what is the point of using them if they complicate things so much? for example if i want to do something on form load in wpf i have to through the trouble of writing this: public MyWindow() { Loaded += MyWindow_Loaded; } private void MyWindow_Loaded(object sender, RoutedEventArgs e) { // do work here } whereas in winforms all i do is double click on the form the question is what are the benefits of using wpf over winforms?

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  • manipulating the geocoding webservices results through javascript?

    - by hao
    using http://maps.google.com/maps/api/geocode/json?address=xyz we get a json file I am wondering how can i maniupluate the results in javascript? How do i create the results object in javascript? http://code.google.com/apis/maps/documentation/geocoding/index.html#JSONParsing this doesnt really explain how they get the myJSONResult

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  • Rails Association Question (addendum)...

    - by keruilin
    My original question and accepted solution was posted here: http://stackoverflow.com/questions/2483640/rails-association-question. Check that out first. My follow-up question is this: I want to return an object that has both the user attributes and the race attributes. That way I can access, for example, the user's name and the fastest_time. How can this be accomplished? I've tried several approaches, but none I've been satisfied with.

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  • jvm issue at startup

    - by Mack
    I can set the max memory as 1000 and not more than that, if I set the memory more than that, it throws the following error. Error occurred during initialization of VM Could not reserve enough space for object heap Could not create the Java virtual machine. My question is, why jvm looks for the max memory at startup? Thanks in advance.

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  • Access to Perl's empty angle "<>" operator from an actual filehandle?

    - by Ryan Thompson
    I like to use the nifty perl feature where reading from the empty angle operator <> magically gives your program UNIX filter semantics, but I'd like to be able to access this feature through an actual filehandle (or IO::Handle object, or similar), so that I can do things like pass it into subroutines and such. Is there any way to do this? This question is particularly hard to google, because searching for "angle operator" and "filehandle" just tells me how to read from filehandles using the angle operator.

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  • Calling a function in an iframe from a parent in firefox

    - by wyatt
    I'm trying to call a function, test(), of an iframe from the parent document using the code subframe.test(); subframe refers correctly to the iframe, alert(subframe) returns [object HTMLIFrameElement], and the function runs in both IE7 and opera (9.23), but not firefox (3.0), chrome (3.0) or safari (3.03 beta windows). I assume these browsers support the functionality, so wondering if perhaps I'm using an incorrect call which IE and Opera support anyway, which wouldn't surprise me.

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  • Creating a list in Python- something sneaky going on?

    - by GlenCrawford
    Apologies if this doesn't make any sense, I'm very new to Python! From testing in an interpreter, I can see that list() and [] both produce an empty list: >>> list() [] >>> [] [] From what I've learned so far, the only way to create an object is to call its constructor (__init__), but I don't see this happening when I just type []. So by executing [], is Python then mapping that to a call to list()?

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  • IO Exception: directory name is invalid using directory from File System Watcher OnChanged Event

    - by Bi
    My C# application throws a System.IO.IOExcepton (The directory name is invalid) for the following code for implementing a filewatcher: public void OnChanged(object source, FileSystemEventArgs e) { DirectoryInfo dList = new DirectoryInfo(e.FullPath); FileInfo[] TxtFiles = dList.GetFiles("*.TXT"); } e.FullPath is "C:/Documents and Settings/Bi/Application Data/TestApp/Reports\\0MA01P62240_000005798_TRI_4947712701738551.TXT". If you notice it seems to append a "\\" to the path when it tracks the file. Any idea what the problem may be?

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  • In Flex, how to drag a component into a column of DataGrid (not the whole DataGrid)?

    - by Yousui
    Hi guys, I have a custom component: <?xml version="1.0" encoding="utf-8"?> <s:Group xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx"> <fx:Declarations> </fx:Declarations> <fx:Script> <![CDATA[ [Bindable] public var label:String = "don't know"; [Bindable] public var imageName:String = "x.gif"; ]]> </fx:Script> <s:HGroup paddingLeft="8" paddingTop="8" paddingRight="8" paddingBottom="8"> <mx:Image id="img" source="assets/{imageName}" /> <s:Label text="{label}"/> </s:HGroup> </s:Group> and a custom render, which will be used in my DataGrid: <?xml version="1.0" encoding="utf-8"?> <s:MXDataGridItemRenderer xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" focusEnabled="true" xmlns:components="components.*"> <s:VGroup> <components:Person label="{dataGridListData.label}"> </components:Person> </s:VGroup> </s:MXDataGridItemRenderer> This is my application: <?xml version="1.0" encoding="utf-8"?> <s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600" xmlns:services="services.*"> <s:layout> <s:VerticalLayout/> </s:layout> <fx:Script> <![CDATA[ import mx.collections.ArrayCollection; import mx.controls.Alert; import mx.controls.Image; import mx.rpc.events.ResultEvent; import mx.utils.ArrayUtil; ]]> </fx:Script> <fx:Declarations> <fx:XMLList id="employees"> <employee> <name>Christina Coenraets</name> <phone>555-219-2270</phone> <email>[email protected]</email> <active>true</active> <image>assets/001.png</image> </employee> <employee> <name>Joanne Wall</name> <phone>555-219-2012</phone> <email>[email protected]</email> <active>true</active> <image>assets/002.png</image> </employee> <employee> <name>Maurice Smith</name> <phone>555-219-2012</phone> <email>[email protected]</email> <active>false</active> <image>assets/003.png</image> </employee> <employee> <name>Mary Jones</name> <phone>555-219-2000</phone> <email>[email protected]</email> <active>true</active> <image>assets/004.png</image> </employee> </fx:XMLList> </fx:Declarations> <s:HGroup> <mx:DataGrid dataProvider="{employees}" width="100%" dropEnabled="true"> <mx:columns> <mx:DataGridColumn headerText="Employee Name" dataField="name"/> <mx:DataGridColumn headerText="Email" dataField="email"/> <mx:DataGridColumn headerText="Image" dataField="image" itemRenderer="renderers.render1"/> </mx:columns> </mx:DataGrid> <s:List dragEnabled="true" dragMoveEnabled="false"> <s:dataProvider> <s:ArrayCollection> <fx:String>aaa</fx:String> <fx:String>bbb</fx:String> <fx:String>ccc</fx:String> <fx:String>ddd</fx:String> </s:ArrayCollection> </s:dataProvider> </s:List> </s:HGroup> </s:Application> Now what I want to do is let the user drag an one or more item from the left List component and drop at the third column of the DataGrid, then using the dragged data to create another <components:Person /> object. So in the final result, maybe the first line contains just one <components:Person /> object at the third column, the second line contains two <components:Person /> object at the third column and so on. Can this be implemented in Flex? How? Great thanks.

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  • Silverlight DataGrid Updating SelectedItem from code

    - by Mark Cooper
    When I update a datagrid SelectedItem from code (via a bound object in a ViewModel), how to I get the visual grid to highlight the newly selected item? Thanks, Mark UPDATE: This is still an issue for me. My SelectedItem property already implements change notification, but the datagrid is not VISUALLY displaying which row has been selected - i.e. it is not getting highlighted.

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  • To Reference A Generic Method With A Lambda Expression

    - by SDReyes
    It is possible to reference a generic method using a Lambda Expression Object? For example, having: TheObject: public abstract class LambdaExpression : Expression TheMethod (an extension method of LINQ): public static TSource Last<TSource>( this IEnumerable<TSource> source ) I'm trying to create an instance of TheObject, that references to TheMethod. How do you do such thing?

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