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  • lwjgl isKeyDown canceling out other keys

    - by AKrush95
    While trying to create a simple game where a square is manipulated via the keyboard keys, I have come across a small, rather irritating problem. I would like it to work so that when the opposite directional key is pressed, the character will stop; the character may move the other two directions while stopped in this situation. This works perfectly with LEFT and RIGHT held down; the player may move UP or DOWN. If UP and DOWN are held down, however, the player will not move, nor will Java recognize that the LEFT or RIGHT keys were pressed. import java.util.ArrayList; import java.util.Random; import org.lwjgl.*; import org.lwjgl.input.Keyboard; import org.lwjgl.opengl.*; import static org.lwjgl.opengl.GL11.*; public class Main { private Man p; private ArrayList<Integer> keysDown, keysUp; public Main() { try { Display.setDisplayMode(new DisplayMode(640, 480)); Display.setTitle("LWJGLHelloWorld"); Display.create(); } catch (LWJGLException e) { e.printStackTrace(); } p = new Man(0, 0); keysDown = new ArrayList<>(); keysUp = new ArrayList<>(); glMatrixMode(GL_PROJECTION); glLoadIdentity(); glOrtho(0, 640, 480, 0, 1, -1); glMatrixMode(GL_MODELVIEW); while (!Display.isCloseRequested()) { glClear(GL_COLOR_BUFFER_BIT); checkKeys(); p.draw(); Display.update(); Display.sync(60); } Display.destroy(); } public void checkKeys() { ArrayList<Integer> keys = new ArrayList<>(); keys.add(Keyboard.KEY_A); keys.add(Keyboard.KEY_D); keys.add(Keyboard.KEY_W); keys.add(Keyboard.KEY_S); for (int key : keys) { if (Keyboard.isKeyDown(key)) keysDown.add(key); else keysUp.add(key); } keysDown.removeAll(keysUp); keysUp = new ArrayList<>(); int speed = 4; int dx = 0; int dy = 0; if (keysDown.contains(keys.get(2))) { System.out.println("keyUP"); dy -= speed; } if (keysDown.contains(keys.get(3))) { System.out.println("keyDOWN"); dy += speed; } if (keysDown.contains(keys.get(0))) { System.out.println("keyLEFT"); dx -= speed; } if (keysDown.contains(keys.get(1))) { System.out.println("keyRIGHT"); dx += speed; } //if (keysDown.contains(keys.get(0)) && keysDown.contains(keys.get(1))) dx = 0; //if (keysDown.contains(keys.get(2)) && keysDown.contains(keys.get(3))) dy = 0; p.update(dx, dy); } public static void main(String[] args) { new Main(); } class Man { public int x, y, w, h; public float cR, cG, cB; public Man(int x, int y) { this.x = x; this.y = y; w = 50; h = 50; Random rand = new Random(); cR = rand.nextFloat(); cG = rand.nextFloat(); cB = rand.nextFloat(); } public void draw() { glColor3f(cR, cG, cB); glRecti(x, y, x+w, y+h); } public void update(int dx, int dy) { x += dx; y += dy; } } } That is the code that I am working with. In addition, I am unsure how to compile an executable jar that is using the lwjgl library in addition to slick-util.

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  • Help with simple frame, and graphics in Java

    - by Crystal
    For hw, I'm trying to create a "CustomButton" that has a frame and in that frame, I draw two triangles, and a square over it. It's supposed to give the user the effect of a button press once it is depressed. So for starters, I am trying to set up the beginning graphics, drawing two triangles, and a square. The problem I have is although I set my frame to 200, 200, and the triangles I have drawn I think to the correct ends of my frame size, when I run the program, I have to extend my window to make the whole artwork, my "CustomButton," viewable. Is that normal? Thanks. Code: import java.awt.*; import java.awt.event.*; import javax.swing.*; public class CustomButton { public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { public void run() { CustomButtonFrame frame = new CustomButtonFrame(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true); } }); } } class CustomButtonFrame extends JFrame { // constructor for CustomButtonFrame public CustomButtonFrame() { setTitle("Custom Button"); setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT); CustomButtonSetup buttonSetup = new CustomButtonSetup(); this.add(buttonSetup); } private static final int DEFAULT_WIDTH = 200; private static final int DEFAULT_HEIGHT = 200; } class CustomButtonSetup extends JComponent { public void paintComponent(Graphics g) { Graphics2D g2 = (Graphics2D) g; // first triangle coords int x[] = new int[TRIANGLE_SIDES]; int y[] = new int[TRIANGLE_SIDES]; x[0] = 0; y[0] = 0; x[1] = 200; y[1] = 0; x[2] = 0; y[2] = 200; Polygon firstTriangle = new Polygon(x, y, TRIANGLE_SIDES); // second triangle coords x[0] = 0; y[0] = 200; x[1] = 200; y[1] = 200; x[2] = 200; y[2] = 0; Polygon secondTriangle = new Polygon(x, y, TRIANGLE_SIDES); g2.drawPolygon(firstTriangle); g2.setColor(Color.WHITE); g2.fillPolygon(firstTriangle); g2.drawPolygon(secondTriangle); g2.setColor(Color.GRAY); g2.fillPolygon(secondTriangle); // draw rectangle 10 pixels off border g2.drawRect(10, 10, 180, 180); } public static final int TRIANGLE_SIDES = 3; }

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  • passing paramter as to webservcie function in wcf

    - by prince23
    hi, this my datagrid event here i am calling the webservice. private void dgProject_RowDetailsVisibilityChanged(object sender, DataGridRowDetailsEventArgs e) { WSDataServiceClient wsService = new WSDataServiceClient(); wsService.GetProjectCompleted += new EventHandler<GetProjectCompletedEventArgs>(wsService_GetProjectCompleted); wsService.GetProjectAsync(strUniqueName); // here can i send datagrid as an parameter to the function? Datagrid gd= new Datagrid(); } void wsService_GetProjectCompleted(object sender, GetProjectCompletedEventArgs e) { // } is there any way that i can send datagrid as a paramter to this function is it possiable to do? beacuse i will be using the same websevice function her but need to bind result with different datagrid based on the condition if i can send a datagrid as paramter to this function i can reduce the code so any help on this issue would be great thank you.

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  • quick sort problem

    - by farka
    I use qsort from C libary and I have datatype Element_type **pElement and Element_type is struct typedef element_type {int ,char ....} example, and i call quicksor function with qsort(*pElement,iCountElement,(size_t)sizeof(Element_type),compare); and callback function static int compare(const void *p1, const void *p2) { Element_type *a1 = (Element_type *)p1; Element_type *a2 = (Element_type *)p2; return ( (a2)->iServiceId < (a1)->iServiceId ); } but I always get segmentation fault. Why?

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  • iOs receivedData from NSURLConnection is nil

    - by yhl
    I was wondering if anyone could point out why I'm not able to capture a web reply. My NSLog shows that my [NSMutableData receivedData] has a length of 0 the entire run of the connection. The script that I hit when I click my login button returns a string. My NSLog result is pasted below, and after that I've pasted both the .h and .m files that I have. NSLog Result 2012-11-28 23:35:22.083 [12548:c07] Clicked on button_login 2012-11-28 23:35:22.090 [12548:c07] theConnection is succesful 2012-11-28 23:35:22.289 [12548:c07] didReceiveResponse 2012-11-28 23:35:22.290 [12548:c07] didReceiveData 2012-11-28 23:35:22.290 [12548:c07] 0 2012-11-28 23:35:22.290 [12548:c07] connectionDidFinishLoading 2012-11-28 23:35:22.290 [12548:c07] 0 ViewController.h #import <UIKit/UIKit.h> @interface ViewController : UIViewController // Create an Action for the button. - (IBAction)button_login:(id)sender; // Add property declaration. @property (nonatomic,assign) NSMutableData *receivedData; @end ViewController.m #import ViewController.h @interface ViewController () @end @implementation ViewController @synthesize receivedData; - (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response { NSLog(@"didReceiveResponse"); [receivedData setLength:0]; } - (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data { NSLog(@"didReceiveData"); [receivedData appendData:data]; NSLog(@"%d",[receivedData length]); } - (void)connectionDidFinishLoading:(NSURLConnection *)connection { NSLog(@"connectionDidFinishLoading"); NSLog(@"%d",[receivedData length]); } - (IBAction)button_login:(id)sender { NSLog(@"Clicked on button_login"); NSString *loginScriptURL = [NSString stringWithFormat:@"http://www.website.com/app/scripts/login.php?"]; NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:loginScriptURL]]; NSString *postString = [NSString stringWithFormat:@"&paramUsername=user&paramPassword=pass"]; NSData *postData = [postString dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES]; [theRequest setHTTPMethod:@"POST"]; [theRequest setHTTPBody:postData]; // Create the actual connection using the request. NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self]; // Capture the response if (theConnection) { NSLog(@"theConnection is succesful"); } else { NSLog(@"theConnection failed"); } } @end

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  • CRUD operations; do you notify whether the insert,update etc. went well ?

    - by danielovich
    Hi guys. I have a simple question for you (i hope) :) I have pretty much always used void as a "return" type when doing CRUD operations on data. Eg. Consider this code: public void Insert(IAuctionItem item) { if (item == null) { AuctionLogger.LogException(new ArgumentNullException("item is null")); } _dataStore.DataContext.AuctionItems.InsertOnSubmit((AuctionItem)item); _dataStore.DataContext.SubmitChanges(); } and then considen this code: public bool Insert(IAuctionItem item) { if (item == null) { AuctionLogger.LogException(new ArgumentNullException("item is null")); } _dataStore.DataContext.AuctionItems.InsertOnSubmit((AuctionItem)item); _dataStore.DataContext.SubmitChanges(); return true; } It actually just comes down to whether you should notify that something was inserted (and went well) or not ?

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  • how to use a wav file in eclipse

    - by AlphaAndOmega
    I've been trying to add audio to a project I've been doing. I found some code on here for html that is also supposed to work with file but it keeps saying "Exception in thread "main" javax.sound.sampled.UnsupportedAudioFileException: could not get audio input stream from input file at javax.sound.sampled.AudioSystem.getAudioInputStream(Unknown Source) at LoopSound.main(LoopSound.java:15)" the code public class LoopSound { public static void main(String[] args) throws Throwable { File file = new File("c:\\Users\\rabidbun\\Pictures\\10177-m-001.wav"); Clip clip = AudioSystem.getClip(); // getAudioInputStream() also accepts a File or InputStream AudioInputStream wav = AudioSystem.getAudioInputStream( file ); clip.open(wav); // loop continuously clip.loop(-1000); SwingUtilities.invokeLater(new Runnable() { public void run() { // A GUI element to prevent the Clip's daemon Thread // from terminating at the end of the main() JOptionPane.showMessageDialog(null, "Close to exit!"); } }); } } What is wrong with the code?

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  • Does template class/function specialization improves compilation/linker speed?

    - by Stormenet
    Suppose the following template class is heavily used in a project with mostly int as typename and linker speed is noticeably slower since the introduction of this class. template <typename T> class MyClass { void Print() { std::cout << m_tValue << std::endl;; } T m_tValue; } Will defining a class specialization benefit compilation speed? eg. void MyClass<int>::Print() { std::cout << m_tValue << std::endl; }

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  • Interface with generic parameters- can't get it to compile

    - by user997112
    I have an interface like so: public interface MyInterface<E extends Something1> { public void meth1(MyClass1<E> x); } and I have a subclass whose superclass implements the above interface: public class MyClass2<E extends Something1> extends Superclass{ public MyClass2(){ } public void meth1(MyClass1 x) { // TODO Auto-generated method stub } } superclass: public abstract class Superclass<E extends Something1> implements MyInterface{ MyClass1<E> x; protected E y; public Superclass(){ } } the problem is that the parameter for meth1() is supposed to be generic. If I do MyClass1 it doesn't like it and the only way I can get it to compile is by leaving out generic parameters- which feels wrong. What's going wrong?

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  • How can I link two Java serialised objects back together?

    - by Kidburla
    Sometimes (quite a lot, actually) we get a situation in Java where two objects are pointing to the same thing. Now if we serialise these separately it is quite appropriate that the serialised forms have separate copies of the object as it should be possible to open one without the other. However if we now deserialise them both, we find that they are still separated. Is there any way to link them back together? Example follows. public class Example { private static class ContainerClass implements java.io.Serializable { private ReferencedClass obj; public ReferencedClass get() { return obj; } public void set(ReferencedClass obj) { this.obj = obj; } } private static class ReferencedClass implements java.io.Serializable { private int i = 0; public int get() { return i; } public void set(int i) { this.i = i; } } public static void main(String[] args) throws Exception { //Initialise the classes ContainerClass test1 = new ContainerClass(); ContainerClass test2 = new ContainerClass(); ReferencedClass ref = new ReferencedClass(); //Make both container class point to the same reference test1.set(ref); test2.set(ref); //This does what we expect: setting the integer in one (way of accessing the) referenced class sets it in the other one test1.get().set(1234); System.out.println(Integer.toString(test2.get().get())); //Now serialise the container classes java.io.ObjectOutputStream os = new java.io.ObjectOutputStream(new java.io.FileOutputStream("C:\\Users\\Public\\test1.ser")); os.writeObject(test1); os.close(); os = new java.io.ObjectOutputStream(new java.io.FileOutputStream("C:\\Users\\Public\\test2.ser")); os.writeObject(test2); os.close(); //And deserialise them java.io.ObjectInputStream is = new java.io.ObjectInputStream(new java.io.FileInputStream("C:\\Users\\Public\\test1.ser")); ContainerClass test3 = (ContainerClass)is.readObject(); is.close(); is = new java.io.ObjectInputStream(new java.io.FileInputStream("C:\\Users\\Public\\test2.ser")); ContainerClass test4 = (ContainerClass)is.readObject(); is.close(); //We expect the same thing as before, and would expect a result of 4321, but this doesn't happen as the referenced objects are now separate instances test3.get().set(4321); System.out.println(Integer.toString(test4.get().get())); } }

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  • Getting back from security & location to my application

    - by sandman42
    Hi, I have an application that allows the user to enable GPS. In order to do it, first in the main activity I do: lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE); if (!lm.isProviderEnabled(LocationManager.GPS_PROVIDER)){ showGpsOptions(); } showGpsOptions() is: private void showGpsOptions() { Intent gpsOptionsIntent = new Intent(android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS); startActivityForResult(gpsOptionsIntent, BACK_FROM_GPS_ACT); } and finally I override main activity onActivityResult in this way: protected void onActivityResult(int requestCode, int resultCode, Intent data) { if (requestCode == BACK_FROM_GPS_ACT){ ; } super.onActivityResult(requestCode, resultCode, data); } Problem: the page show up and works, but when I press back I get back to home screen. Question: how can I get back to my application? Thanks a lot

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  • Issue Displaying/Hiding Views (Obj-C iPhone Programming)

    - by roswell
    All right all, So I've got a UITableView that is inited in applicationDidFinishLaunching like so: [self showForumList]; Said method does this: -(void)showForumList { ForumList *fl = [ForumList alloc]; [fl initWithNibName:@"ForumList" bundle:[NSBundle mainBundle]]; self.ForumList = fl; [window addSubview:[self.ForumList view]]; [fl release]; }where self.ForumList is previously defined in the interface as ForumList *ForumList;, etc. Now, in ForumList (itself an extension of UITableViewController obviously), I've got didSelectRowAtIndexPath: -- within it I have the following code: Forum *f = [Forum alloc]; NSArray *forums = [f getForumList]; NSDictionary *selectedForum = [forums objectAtIndex:[indexPath row]]; NSString *Url = [selectedForum objectForKey:@"url"]; NSString *Username = [selectedForum objectForKey:@"username"]; NSString *Password = [selectedForum objectForKey:@"password"]; NSLog(@"Identified press on forum %@ (%@/%@)", Url, Username, Password); [self.globalDelegate showForumListFromForumUsingUrl:Url username:Username password:Password]; [self.globalDelegate closeForumList]; NSLog(@"ForumListFromForum init"); Both of the NSLog calls in this function are executed and perform as they should. Now, here is where the issue starts. self.globalDelegate is defined as AppDelegate *globalDelegate; in the Interface specification in my header file. However, [self.globalDelegate showForumListFromForumUsingUrl:username:password] and and [self.globalDelegate closeForumList] are never actually called. They look like so: -(void)closeForumList { NSLog(@"Hiding forum list"); [[self.ForumList view] removeFromSuperview]; } -(void)showForumListFromForumUsingUrl:(NSString *)Url username:(NSString *)Username password:(NSString *)Password { NSLog(@"Showing forum list from forum"); ForumListFromForum *fl = [ForumListFromForum alloc]; [fl initWithNibName:@"ForumListFromForum" bundle:[NSBundle mainBundle]]; [fl initFromForumWithUrl:Url username:Username password:Password]; self.ForumListFromForum = fl; [window addSubview:[self.ForumListFromForum view]]; [fl release]; } The app does not respond to my press and neither of these NSLog calls are made. Any idea where I've gone wrong?

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  • UIWebView Loading content properly on iOS 6 simulator but not on device?

    - by David Hegner
    I have encountered a weird bug with a released app. My UIWebView is no longer loading content on iOS 6, yet the content still displays in the simulator. The activity indicator displays properly but then it loads a blank url? Again, this only happens on a device, not on the simulator. To provide extra context (in the simulator the NSURLRequest is assigned the proper URL. When run on a device the value is nil.) Here is my code : -(void)loading { if(!self.webView.loading) [self.activityIndicator stopAnimating]; else { [self.activityIndicator startAnimating]; } } - (void)viewDidLoad { [self.webView addSubview:self.activityIndicator]; NSURLRequest *requestUrl = [NSURLRequest requestWithURL:self.url]; [self.webView loadRequest:requestUrl]; self.timer = [NSTimer scheduledTimerWithTimeInterval:(1.0/2.0) target:self selector:@selector(loading) userInfo:nil repeats:YES]; [super viewDidLoad]; NSLog(@"%@", requestUrl); }

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  • start function from another tab in UIWebView

    - by Marjan
    Hello, I have app which have two views implemented in Tabbar, one of them is UIWebView which shows some random html and second is mapView (route-me map), I have function in MapViewController.m which do sth stuff when is clicked on marker label - (void) tapOnLabelForMarker: (RMMarker*) marker onMap: (RMMapView*) map { NSLog(@"taponlabelformarker clicked"); self.tabBarController.selectedIndex=0; WebViewController *web = [[WebViewController alloc] init]; [web dajdasepije]; } and that function should call function which show html in uiwebview tab -(void)dajdasepije { NSLog(@" pokreni me njezno"); [webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.google.com"]]]; } Problem is that UIWebView never show google page that I asked for it, NSLog prints out at terminal messages that function was called but nothing else happens. Please help, Thanks in advance. Marjan

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  • unrecognized selector sent to instance while trying to add an object to a mutable array

    - by madpoet
    I'm following the "Your Second iOS App" and I decided to play with the code to understand Objective C well... What I'm trying to do is simply adding an object to a mutable array in a class. Here are the classes: BirdSighting.h #import <Foundation/Foundation.h> @interface BirdSighting : NSObject @property (nonatomic, copy) NSString *name; @property (nonatomic, copy) NSString *location; @property (nonatomic, copy) NSDate *date; -(id) initWithName: (NSString *) name location:(NSString *) location date:(NSDate *) date; @end BirdSighting.m #import "BirdSighting.h" @implementation BirdSighting -(id) initWithName:(NSString *)name location:(NSString *)location date:(NSDate *)date { self = [super init]; if(self) { _name = name; _location = location; _date = date; return self; } return nil; } @end BirdSightingDataController.h #import <Foundation/Foundation.h> @class BirdSighting; @interface BirdSightingDataController : NSObject @property (nonatomic, copy) NSMutableArray *masterBirdSightingList; - (NSUInteger) countOfList; - (BirdSighting *) objectInListAtIndex: (NSUInteger) theIndex; - (void) addBirdSightingWithSighting: (BirdSighting *) sighting; @end BirdSightingDataController.m #import "BirdSightingDataController.h" @implementation BirdSightingDataController - (id) init { if(self = [super init]) { NSMutableArray *sightingList = [[NSMutableArray alloc] init]; self.masterBirdSightingList = sightingList; return self; } return nil; } -(NSUInteger) countOfList { return [self.masterBirdSightingList count]; } - (BirdSighting *) objectInListAtIndex: (NSUInteger) theIndex { return [self.masterBirdSightingList objectAtIndex:theIndex]; } - (void) addBirdSightingWithSighting: (BirdSighting *) sighting { [self.masterBirdSightingList addObject:sighting]; } @end And this is where I'm trying to add a BirdSighting instance to the mutable array: #import "BirdsMasterViewController.h" #import "BirdsDetailViewController.h" #import "BirdSightingDataController.h" #import "BirdSighting.h" @implementation BirdsMasterViewController - (void)awakeFromNib { [super awakeFromNib]; BirdSightingDataController *dataController = [[BirdSightingDataController alloc] init]; NSDate *date = [NSDate date]; BirdSighting *sighting = [[[BirdSighting alloc] init] initWithName:@"Ebabil" location:@"Ankara" date: date]; [dataController addBirdSightingWithSighting: sighting]; NSLog(@"dataController: %@", dataController.masterBirdSightingList); self.dataController = dataController; } .......... @end It throws NSInvalidArgumentException in BirdSightingDataController addBirdSightingWithSighting method... What am I doing wrong?

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  • page_load another handler?

    - by joe doe
    can someone please explain why this code is not working as expected: using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; public partial class temp : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { Response.Write("foo<br>"); this.Load += new EventHandler(temp_Load); } void temp_Load(object sender, EventArgs e) { Response.Write("bar<br>"); Response.End(); } } trying to add another handler for page Load event so that output would be: foo<br> bar<br>

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  • wpf how to bind a listbox to a list (two ways) - c#

    - by user429400
    Hi, I want to create a 2 way bind between a listbox and a .NET list. In my GUI, I have a listbox, a textbox and add and remove buttons. The listbox displays cars, and my goal is to create a 2way bind between the .Net car list and the listbox: when the user enters a car into the textbox, it gets updated only in the .Net list, and the listbox is updated automatically. When the user press the GUI "remove" button, a car gets removed from the GUI and the .Net list is updated automatically. I've started to write the xaml code, but figured that I don't actually know how to do the binding on both sides (c# and xaml): <Window x:Class="WpfApplication1.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:c="clr-namespace:WpfApplication1" Title="Window1" Height="300" Width="369" Loaded="Window_Loaded"> <Window.Resources> <ObjectDataProvider x:Key="carsData" ObjectType="{x:Type c:Window1}" /> </Window.Resources> <Grid Width="332"> <ListBox Margin="10,62,0,100" Name="myListBox" HorizontalAlignment="Left" Width="120" ItemsSource="{Binding Source={StaticResource CarsData}}"/> <Button Height="23" Margin="66,0,0,65" Name="addBtn" VerticalAlignment="Bottom" Click="addBtn_Click" HorizontalAlignment="Left" Width="64">add</Button> <TextBox Margin="10,0,0,64.48" Name="myTextBox" Height="23" VerticalAlignment="Bottom" HorizontalAlignment="Left" Width="47" /> <Button Height="23" Margin="66,0,0,33" Name="removeButton" VerticalAlignment="Bottom" HorizontalAlignment="Left" Width="64" Click="removeButton_Click">Remove</Button> </Grid> </Window> There is my c# code: namespace WpfApplication1 { public partial class Window1 : Window { MyModel listMgr; ObservableCollection carList; public Window1() { InitializeComponent(); listMgr = new MyModel(); } private void addBtn_Click(object sender, RoutedEventArgs e) { listMgr.add(new Car(0, myTextBox.Text, 2011)); } private void removeButton_Click(object sender, RoutedEventArgs e) { //myListBox.Items.RemoveAt(0); } private void Window_Loaded(object sender, RoutedEventArgs e) { carList = listMgr.getList(); myListBox.DataContext = carList; //secondListBox.DataContext = carList; } } } Thanks, Li

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  • Received memory warning. Level=2, Program received signal: “0”.

    - by sabby
    Hi friends I am getting images from webservice and loading these images in table view.But when i continue to scroll the program receives memory warning level1,level2 and then app exits with status 0.That happens only in device not in simulator. Here is my code which i am putting please help me out. - (void)viewDidLoad { [super viewDidLoad]; UIButton *infoButton = [[UIButton alloc] initWithFrame:CGRectMake(0, -4, 62, 30)]; [infoButton setBackgroundImage:[UIImage imageNamed: @"back.png"] forState:UIControlStateNormal]; [infoButton addTarget:self action:@selector(backButtonClicked) forControlEvents:UIControlEventTouchUpInside]; UIBarButtonItem *customBarButtomItem = [[UIBarButtonItem alloc] initWithCustomView:infoButton]; self.navigationItem.leftBarButtonItem = customBarButtomItem; [customBarButtomItem release]; [infoButton release]; UIButton *homeButton = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 62, 30)]; [homeButton setBackgroundImage:[UIImage imageNamed: @"home.png"] forState:UIControlStateNormal]; [homeButton.titleLabel setFont:[UIFont systemFontOfSize:11]]; //[homeButton setTitle:@"UPLOAD" forState:UIControlStateNormal]; [homeButton addTarget:self action:@selector(homeButtonClicked) forControlEvents:UIControlEventTouchUpInside]; UIBarButtonItem *rightBarButtom = [[UIBarButtonItem alloc] initWithCustomView:homeButton]; self.navigationItem.rightBarButtonItem = rightBarButtom; [rightBarButtom release]; [homeButton release]; sellerTableView=[[UITableView alloc]initWithFrame:CGRectMake(0, 0, 320, 416) style:UITableViewStylePlain]; sellerTableView.delegate=self; sellerTableView.dataSource=self; sellerTableView.backgroundColor=[UIColor clearColor]; sellerTableView.scrollEnabled=YES; //table.separatorColor=[UIColor grayColor]; //table.separatorColor=[UIColor whiteColor]; //[[table layer]setRoundingMode:NSNumberFormatterRoundDown]; [[sellerTableView layer]setBorderColor:[[UIColor darkGrayColor]CGColor]]; [[sellerTableView layer]setBorderWidth:2]; //[[productTable layer]setCornerRadius:10.3F]; [self.view addSubview:sellerTableView]; appDel = (SnapItAppAppDelegate*)[[UIApplication sharedApplication] delegate]; } -(void)viewWillAppear:(BOOL)animated { spinner = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray]; spinner.center = self.view.center; [self.view addSubview:spinner]; [spinner startAnimating]; [[SnapItParsing sharedInstance]assignSender:self]; [[SnapItParsing sharedInstance]startParsingForShowProducts:appDel.userIdString]; [sellerTableView reloadData]; } -(void)showProducts:(NSMutableArray*)proArray { if (spinner) { [spinner stopAnimating]; [spinner removeFromSuperview]; [spinner release]; spinner = nil; } if ([[[proArray objectAtIndex:1]objectForKey:@"Success"]isEqualToString:@"True"]) { //[self.navigationController popViewControllerAnimated:YES]; //self.view.alpha=.12; if (productInfoArray) { [productInfoArray release]; } productInfoArray=[[NSMutableArray alloc]init]; for (int i=2; i<[proArray count]; i++) { NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; [productInfoArray addObject:[proArray objectAtIndex:i]]; NSLog(@"data fetch array is====> /n%@",productInfoArray); [pool release]; } } } #pragma mark (tableview methods) - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{ return 100; } - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { //return [resultarray count]; return [productInfoArray count]; } -(void)loadImagesInBackground:(NSNumber *)index{ NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; NSMutableDictionary *frame = [[productInfoArray objectAtIndex:[index intValue]] retain]; //NSLog(@"frame value ==>%@",[[frame objectForKey:@"Image"]length]); NSString *frameImagePath = [NSString stringWithFormat:@"http://apple.com/snapit/products/%@",[frame objectForKey:@"Image"]]; NSData *imageData = [NSData dataWithContentsOfURL:[NSURL URLWithString:frameImagePath]]; NSLog(@"FRAME IMAGE%d",[[frame valueForKey:@"Image" ]length]); if([[frame valueForKey:@"Image"] length] == 0){ NSString *imagePath = [[NSString alloc] initWithFormat:@"%@/%@",[[NSBundle mainBundle] resourcePath],@"no_image.png"]; UIImage *image = [UIImage imageWithContentsOfFile:imagePath]; [frame setObject:image forKey:@"friendImage"]; [imagePath release]; //[image release]; } else { //NSData *imageData = [NSData dataWithContentsOfURL:[NSURL URLWithString:frameImagePath]]; NSLog(@"image data length ==>%d",[imageData length]); if([imageData length] == 0){ NSString *imagePath = [[NSString alloc] initWithFormat:@"%@/%@",[[NSBundle mainBundle] resourcePath],@"no_image.png"]; UIImage *image = [UIImage imageWithContentsOfFile:imagePath]; [frame setObject:image forKey:@"friendImage"]; [imagePath release]; //[image release]; } else { //UIImage *image = [[UIImage alloc] initWithData:imageData]; UIImage *image = [UIImage imageWithData:imageData]; [frame setObject:image forKey:@"friendImage"]; //[image release]; } } [frame release]; frame = nil; [self performSelectorOnMainThread:@selector(reloadTable:) withObject:[NSArray arrayWithObject:[NSIndexPath indexPathForRow:[index intValue] inSection:0]] waitUntilDone:NO]; [pool release]; } -(void)reloadTable:(NSArray *)array{ NSLog(@"array ==>%@",array); [sellerTableView reloadRowsAtIndexPaths:array withRowAnimation:UITableViewRowAnimationNone]; } - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *celltype=@"cell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:celltype]; for (UIView *view in cell.contentView.subviews) { [view removeFromSuperview]; } if (cell == nil) { cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"cell"] autorelease]; cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator; cell.backgroundColor=[UIColor clearColor]; //cell.textLabel.text=[[resultarray objectAtIndex:indexPath.row] valueForKey:@"Service"]; /*UIImage *indicatorImage = [UIImage imageNamed:@"indicator.png"]; cell.accessoryView = [[[UIImageView alloc] initWithImage:indicatorImage] autorelease];*/ /*NSThread *thread=[[NSThread alloc]initWithTarget:self selector:@selector() object:nil]; [thread setStackSize:44]; [thread start];*/ cell.backgroundView=[[[UIImageView alloc]initWithImage:[UIImage imageNamed:@"cell.png"]]autorelease]; // [[[UIImageView alloc] initWithImage:[UIImage imageNamed:@"back.png"]] autorelease]; cell.selectionStyle=UITableViewCellSelectionStyleNone; } UIImageView *imageView= [[UIImageView alloc] initWithFrame:CGRectMake(19, 15, 75, 68)]; imageView.contentMode = UIViewContentModeScaleToFill; // @synchronized(self) //{ NSMutableDictionary *dict = [productInfoArray objectAtIndex:indexPath.row]; if([dict objectForKey:@"friendImage"] == nil){ imageView.backgroundColor = [UIColor clearColor]; if ([dict objectForKey:@"isThreadLaunched"] == nil) { [NSThread detachNewThreadSelector:@selector(loadImagesInBackground:) toTarget:self withObject:[NSNumber numberWithInt:indexPath.row]]; [dict setObject:@"Yes" forKey:@"isThreadLaunched"]; } }else { imageView.image =[dict objectForKey:@"friendImage"]; } //NSString *imagePath = [[NSString alloc] initWithFormat:@"%@/%@",[[NSBundle mainBundle] resourcePath],@"no_image.png"]; //imageView.layer.cornerRadius = 20.0;//vk //imageView.image=[UIImage imageWithContentsOfFile:imagePath]; //imageView.layer.masksToBounds = YES; //imageView.layer.borderColor = [UIColor darkGrayColor].CGColor; //imageView.layer.borderWidth = 1.0;//vk //imageView.layer.cornerRadius=7.2f; [cell.contentView addSubview:imageView]; //[imagePath release]; [imageView release]; imageView = nil; //} UILabel *productCodeLabel = [[UILabel alloc] initWithFrame:CGRectMake(105, 7, 60,20 )]; productCodeLabel.textColor = [UIColor whiteColor]; productCodeLabel.backgroundColor=[UIColor clearColor]; productCodeLabel.text=[NSString stringWithFormat:@"%@",@"Code"]; [cell.contentView addSubview:productCodeLabel]; [productCodeLabel release]; UILabel *CodeValueLabel = [[UILabel alloc] initWithFrame:CGRectMake(170, 7, 140,20 )]; CodeValueLabel.textColor = [UIColor whiteColor]; CodeValueLabel.backgroundColor=[UIColor clearColor]; CodeValueLabel.text=[NSString stringWithFormat:@"%@",[[productInfoArray objectAtIndex:indexPath.row]valueForKey:@"ID"]]; [cell.contentView addSubview:CodeValueLabel]; [CodeValueLabel release]; UILabel *productNameLabel = [[UILabel alloc] initWithFrame:CGRectMake(105, 35, 60,20 )]; productNameLabel.textColor = [UIColor whiteColor]; productNameLabel.backgroundColor=[UIColor clearColor]; productNameLabel.text=[NSString stringWithFormat:@"%@",@"Name"]; [cell.contentView addSubview:productNameLabel]; [productNameLabel release]; UILabel *NameValueLabel = [[UILabel alloc] initWithFrame:CGRectMake(170, 35, 140,20 )]; NameValueLabel.textColor = [UIColor whiteColor]; NameValueLabel.backgroundColor=[UIColor clearColor]; NameValueLabel.text=[NSString stringWithFormat:@"%@",[[productInfoArray objectAtIndex:indexPath.row]valueForKey:@"Title"]]; [cell.contentView addSubview:NameValueLabel]; [NameValueLabel release]; UILabel *dateLabel = [[UILabel alloc] initWithFrame:CGRectMake(105, 68, 60,20 )]; dateLabel.textColor = [UIColor whiteColor]; dateLabel.backgroundColor=[UIColor clearColor]; dateLabel.text=[NSString stringWithFormat:@"%@",@"Date"]; [cell.contentView addSubview:dateLabel]; [dateLabel release]; UILabel *dateValueLabel = [[UILabel alloc] initWithFrame:CGRectMake(170, 68, 140,20 )]; dateValueLabel.textColor = [UIColor whiteColor]; dateValueLabel.backgroundColor=[UIColor clearColor]; dateValueLabel.text=[NSString stringWithFormat:@"%@",[[productInfoArray objectAtIndex:indexPath.row]valueForKey:@"PostedDate"]]; dateValueLabel.font=[UIFont systemFontOfSize:14]; dateValueLabel.numberOfLines=3; dateValueLabel.adjustsFontSizeToFitWidth=YES; [dateValueLabel setLineBreakMode:UILineBreakModeCharacterWrap]; [cell.contentView addSubview:dateValueLabel]; [dateValueLabel release]; } Please-2 help me out ,where i am doing mistake.....

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  • I get an "EXC_BAD_ACCESS" when I try to read a NSString...

    - by micropsari
    Hello ! This is a (very) simplified version of my iPhone code : @interface x { NSString * name1; NSString * name2; } -init { name1 = @""; name2 = @""; } -(void) a { name1 = @"uhuh"; name2 = [foo bar]; // return a (NSString *) } -(void) b { NSLog(@"%@", name1); // it works NSLog(@"%@", name2); // there I get an EXC_BAD_ACCESS... } Why I have this problem ? And how can I solve it ? Thanks !

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  • SkinId and Dynamic Control

    - by Alex
    Hi! I have some control that I add dynamically to my page: public partial class _Default : Page { protected override void CreateChildControls() { base.CreateChildControls(); var testControl = new TestControl { SkinID = "TestSkin" }; Controls.Add(testControl); } } I have the following skin file for this control: <cc:TestControl runat="server" SkinID="TestSkin" TestProperty="LALALA" /> But TestProperty is null (if control is static all works): public class TestControl : LinkButton { public string TestProperty { get; set; } protected override void OnPreRender(EventArgs e) { if (String.IsNullOrEmpty(TestProperty)) { throw new ArgumentNullException("TestProperty"); } } } Any ideas about how to fix it?

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  • Guice child injector override binding

    - by Roman
    Hi All I am trying to to override a binding in a child injector that was already configured in a base injector. like that : public class PersistenceModule extends Abstract{ @Override protected void configure() { bind(IProductPersistenceHelper.class).to(ProductPersistenceHelper.class); } } then : Injector injector = Guice.createInjector(new PersistenceModule()); injector.createChildInjector(new AbstractModule(){ @Override protected void configure() { bind(IProductPersistenceHelper.class).to(MockProductPersistenceHelper.class); } }) Guice is complaining that it has already a binding for that. Are there any patterns or best practices for that problem ?

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  • Prevent Erroneous Property Assignment

    - by Gordon
    Porting android applications to iphone applications always gives me the following pattern that I accidentally create: - (void) myFunc:(id)prop { self.property = property; } Which instead should be: - (void) myFunc:(id)prop { self.property = prop; } This always causes my program to quietly break because property gets reset to its existing value rather than being set to the new value, 'prop'. I cannot name the parameter 'prop' to 'property' since the compile complains that the parameter masks the instance variables visibility. Is there a good way to avoid this situation? There are no compiler warnings. Is there a way to make xcode prevent this? I cannot see very many situations where you would set a property to the value of its underlying instance variable (maybe to trigger a KVO binding?), but I don't see myself doing that in majority of cases. I understand the above code is synthetic and should be done with @synthesize, but I am just using it as a simplified example to illustrate my point.

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  • std::make_shared as a default argument does not compile

    - by Mark Bryant
    In Visual C++ (2008 and 2010), the following code does not compile with the following error: #include <memory> void Foo( std::shared_ptr< int > test = ::std::make_shared< int >( 5 ) ) { } class P { void Foo( std::shared_ptr< int > test = ::std::make_shared< int >( 5 ) ) { } }; error C2039: 'make_shared' : is not a member of '`global namespace'' error C3861: 'make_shared': identifier not found It is complaining about the definition of P::Foo() not ::Foo(). Does anybody know why it is valid for Foo() to have a default argument with std::make_shared but not P::Foo()?

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  • error in copy/ paste of image

    - by sayyad
    I am getting an error by implementing this simple code. I donot understand where I am doing mistake. // ERROR An unhandled exception of type 'System.NullReferenceException' occurred in ImageCSharp.exe Additional information: Der Objektverweis wurde nicht auf eine Objektinstanz festgelegt. I can get clipboard text but why i can't get /set image. //CODE public void copy() { // Determine the active child form. fImage activeChild = this.ActiveMdiChild as fImage; if (activeChild != null) { PictureBox mypicbox = activeChild.picbox; string win_name = activeChild.Tag.ToString(); Clipboard.SetImage(mypicbox.Image); Clipboard.SetText(win_name); } } private void paste() { Image im= Clipboard.GetImage(); this.pictureBox1.Image = im; MessageBox.Show(im.Size.ToString()); } regards,

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  • Validation of method parameters

    - by Anton Tsivarev
    I have a RESTful web service. For implementation using JAX-RS (Jersey). Have the following method: public void foo (@PathParam ("name") String uuid) { ... } I need to do validation of input parameters. And if data invalid throw WebApplicationException. I added my custom annotation CheckUuid (extends ): public void foo (@PathParam ("name") @CheckUuid String uuid) { ... } Is it possible to do validation using annotations on a stage when the method chosen, but not yet called? For example using PreProcessInterceptor?

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