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  • Dragging a Sprite (Cocos2D) while Chipmunk is simulating

    - by itai alter
    Hello all! I have a simple project built with Cocos2D and Chipmunk. So far it's just a Ball (body, shape & sprite) bouncing on the Ground (a static line segment at the bottom of the screen). I implemented the ccTouchesBegan/Moved/Ended methods to drag the ball around. I've tried both: cpBodySlew(ballBody, touchPoint, 1.0/60.0f); and ballBody->p = cgPointMake(touchPoint.x,touchPoint.y); and while the Ball does follow my dragging, it's still being affected by gravity and it tries to go down (which causes velocity problems and others). Does anyone know of the preferred way to Drag an active Body while the physics simulation is going on? Do I need somehow to stop the simulation and turn it back on afterwards? Thanks!

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  • Initialize preferences from XML in main Activity

    - by pixel
    My problem is that when I start application and user didn't open my PreferenceActivity so when I retrieve them don't get any default values defined in my preference.xml file. preference.xml file: <?xml version="1.0" encoding="utf-8"?> <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" android:key="applicationPreference" android:title="@string/config" > <ListPreference android:key="pref1" android:defaultValue="default" android:title="Title" android:summary="Summary" android:entries="@array/entry_names" android:entryValues="@array/entry_values" android:dialogTitle="@string/dialog_title" /> </PreferenceScreen> Snippet from my main Activity (onCreate method): SharedPreferences appPreferences = PreferenceManager.getDefaultSharedPreferences(this); String pref1 = appPreferences.getString("pref1", null); In result I end up with a null value.

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  • Yet another UITableView Question

    - by barbgal
    Hi, I have a strange issue in my iPhone application. I have created a UITableView with 4 Sections and 3 Rows so totally 12 Rows. But - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath The above method only gets called for 9 times instead of 12 times.why this happenning. My 4th section is not getting constructed but my 1st section gets duplicated as 4th section. Thanks for your time and help. Plese refer my code below @interface MainViewController : UITableViewController<UITextFieldDelegate,UITableViewDelegate,UITableViewDataSource> { } @end // Implement viewDidLoad to do additional setup after loading the view, typically from a nib. - (void)viewDidLoad { CGRect frameRect = CGRectMake(0,0,320,460); UITableView *tableView = [[UITableView alloc] initWithFrame:frameRect style:UITableViewStyleGrouped]; tableView.delegate = self; tableView.dataSource = self; tableView.backgroundColor = [UIColor purpleColor]; tableView.scrollEnabled = YES; self.view = tableView; [tableView release]; [super viewDidLoad]; } - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { // Return the number of rows in the section. return 3; } - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { // Return the number of sections. return 4; } // Customize the appearance of table view cells. - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { NSLog(@"CELL IS NIL %i", indexPath.section); static NSString *CellIdentifier = @"Cell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease]; if (indexPath.section == 0) { if(indexPath.row == 0) { cell.text = @"Tmail"; UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)]; aField.placeholder = @"Mandatory"; aField.delegate = self; aField.textColor = [UIColor blackColor]; [cell addSubview:aField]; [aField release]; } else if ( indexPath.row == 1 ) { cell.text = @"English"; UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)]; aField.placeholder = @"Mandatory"; aField.delegate = self; aField.textColor = [UIColor blackColor]; [cell addSubview:aField]; [aField release]; } else { cell.text = @"Hindi"; UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)]; aField.placeholder = @"Mandatory"; aField.delegate = self; aField.textColor = [UIColor blackColor]; [cell addSubview:aField]; [aField release]; } } else if (indexPath.section == 1) { if(indexPath.row == 0) { cell.text = @"Street"; UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)]; aField.placeholder = @"Mandatory"; aField.delegate = self; aField.textColor = [UIColor blackColor]; [cell addSubview:aField]; [aField release]; } else if ( indexPath.row == 1 ) { cell.text = @"City"; UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)]; aField.placeholder = @"Mandatory"; aField.delegate = self; aField.textColor = [UIColor blackColor]; [cell addSubview:aField]; [aField release]; } else { cell.text = @"State"; UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)]; aField.placeholder = @"Mandatory"; aField.delegate = self; aField.textColor = [UIColor blackColor]; [cell addSubview:aField]; [aField release]; } } else if (indexPath.section == 2) { if(indexPath.row == 0) { cell.text = @"Salem"; UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)]; aField.placeholder = @"Mandatory"; aField.delegate = self; aField.textColor = [UIColor blackColor]; [cell addSubview:aField]; [aField release]; } else if ( indexPath.row == 1 ) { cell.text = @"Samalpatti"; UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)]; aField.placeholder = @"Mandatory"; aField.delegate = self; aField.textColor = [UIColor blackColor]; [cell addSubview:aField]; [aField release]; } else { cell.text = @"Chennai"; UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)]; aField.placeholder = @"Mandatory"; aField.delegate = self; aField.textColor = [UIColor blackColor]; [cell addSubview:aField]; [aField release]; } } else if (indexPath.section == 3) { if(indexPath.row == 0) { cell.text = @"NOKIA"; UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)]; aField.placeholder = @"Mandatory"; aField.delegate = self; aField.textColor = [UIColor blackColor]; [cell addSubview:aField]; [aField release]; } else if ( indexPath.row == 1) { cell.text = @"SAMSUNG"; UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)]; aField.placeholder = @"Mandatory"; aField.delegate = self; aField.textColor = [UIColor blackColor]; [cell addSubview:aField]; [aField release]; } else { cell.text = @"SONY"; UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)]; aField.placeholder = @"Mandatory"; aField.delegate = self; aField.textColor = [UIColor blackColor]; [cell addSubview:aField]; [aField release]; } } } return cell; }

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  • View controller is drawing under my navigation bar after popping ttthumbsviewcontroller

    - by scootklein
    I'm implementing the TTThumbsViewController from the Three20 project and things are finally starting to take shape. I push the TTThumbsViewController from the current view controller by just pushing it onto the current stack and animate the transition (common navigation controller push). My problem is that when I pop the TThumbsViewController view controller, the navigation controller is stuck in a mode where its view controllers are drawn UNDER the navigation bar (which is now translucent). Start Push Pop

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  • How can we change color of a text programmatically ?

    - by user297535
    My code is -(UIImage *)addText:(UIImage *)img text:(NSString *)text1{ int w = img.size.width; int h = img.size.height; CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB(); CGContextRef context = CGBitmapContextCreate(NULL, w, h, 8, 4 * w, colorSpace, kCGImageAlphaPremultipliedFirst); CGContextDrawImage(context, CGRectMake(0, 0, w, h), img.CGImage); CGContextSetRGBFillColor(context, 0.0, 0.0, 1.0, 1); char* text = (char *)[text1 cStringUsingEncoding:NSASCIIStringEncoding]; CGContextSelectFont(context, "Arial", 18, kCGEncodingMacRoman); CGContextSetTextDrawingMode(context, kCGTextFill); CGContextSetRGBFillColor(context, 255, 255, 255, 2); CGContextShowTextAtPoint(context, 10, 170, text, strlen(text)); CGImageRef imageMasked = CGBitmapContextCreateImage(context); CGContextRelease(context); CGColorSpaceRelease(colorSpace); return [UIImage imageWithCGImage:imageMasked]; } -(UIImage *)addText:(UIImage *)img text:(NSString *)text1{ int w = img.size.width; int h = img.size.height; CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB(); CGContextRef context = CGBitmapContextCreate(NULL, w, h, 8, 4 * w, colorSpace, kCGImageAlphaPremultipliedFirst); CGContextDrawImage(context, CGRectMake(0, 0, w, h), img.CGImage); CGContextSetRGBFillColor(context, 0.0, 0.0, 1.0, 1); char* text = (char *)[text1 cStringUsingEncoding:NSASCIIStringEncoding]; CGContextSelectFont(context, "Arial", 18, kCGEncodingMacRoman); CGContextSetTextDrawingMode(context, kCGTextFill); CGContextSetRGBFillColor(context, 255, 255, 255, 2); CGContextShowTextAtPoint(context, 10, 170, text, strlen(text)); CGImageRef imageMasked = CGBitmapContextCreateImage(context); CGContextRelease(context); CGColorSpaceRelease(colorSpace); return [UIImage imageWithCGImage:imageMasked]; } How can we change the color of the text programmatically? Answers will be greatly appreciated!

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  • How to get the same UITableViewCell layout as in the Address Book app?

    - by Romain
    Hi, I currently have a custom UITableViewCell which contains a few labels, and an image. The "main" label is used to display people's names. Currently, I'm styling it in bold text. What I'd like to do (to gain some space and readability), is to mimic the Address Book app cell style, that is: first name in light text, and family name in bold text. Is there a way to do this using the same UILabel? Or, should I use 2 different UILabels? How should I layout them, without knowing their sizes? Thanks in advance for your assistance!

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  • NSAlert doesn't work

    - by Marco
    Hello i have implemented the following NSAlert: NSString *title = [NSString stringWithFormat:@"Keine Internetverbindung"]; NSString *alertMessage = [NSString stringWithFormat:@"Es konnte keine Verbindung zu www.sip.de aufgebaut werden!"]; NSString *ok = [NSString stringWithFormat:@"Ok"]; UIAlertView *alert = [[UIAlertView alloc] initWithTitle:title message:alertMessage delegate:self cancelButtonTitle:ok otherButtonTitles:nil]; [alert show]; [alert release]; and this is the delegate method to close the app: - (void)alertView:(UIAlertView *)alertView didDisMissWithButtonIndex:(NSInteger)buttonIndex{ exit(3); } But why the programm doesn't go into the method, what is my mistake? greetings Marco

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  • How to troubleshoot deallocation of object in uitableview?

    - by 4thSpace
    I have a table view with tall cells. About 300 in height. The cells are custom and have an associated nib. In cellForRowAtIndexPath, I access an object in an array using indexPath.row. The object has properties, which I assign to labels on the custom cell. This works fine for the first two cells. Once I scroll enough for the third cell to get created, the app crashes. I have NSZombieEnabled set and here is the output: 2010-04-19 21:48:13.360 MyApp[54463:207] *** -[CALayer release]: message sent to deallocated instance 0xfc4e50 (gdb) continue 2010-04-19 21:48:18.382 MyApp[54463:207] *** NSInvocation: warning: object 0xfc4e50 of class '_NSZombie_CALayer' does not implement methodSignatureForSelector: -- trouble ahead 2010-04-19 21:48:18.383 MyApp[54463:207] *** NSInvocation: warning: object 0xfc4e50 of class '_NSZombie_CALayer' does not implement doesNotRecognizeSelector: -- abort (gdb) continue Program received signal: “EXC_BAD_ACCESS”. (gdb) I'm not sure what is deallocated. How can I trace this to the source?

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  • Avoid hardcoding iPhone screen size with programmatic view creation

    - by miorel
    Hi, I was looking up how to create a view programmatically and found the following example code: self.view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 480)]; This works great, except I don't like that it hardcodes the size of the screen. Is there a way to look up the size of the screen? An important point someone brought up is that if the app is running during a phone call then the screen will be slightly smaller because of the green "return to call" bar.

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  • UIRotationGestureRecognizer minimum rotation value

    - by dc
    Is it possible to set a minimum rotation value necessary for a UIRotationGestureRecognizer to transition into UIGestureRecognizerStateRecognized? I'm using multiple recognizers, and my UIRotationGestureRecognizer keeps getting called with a very small rotation (Between 1 and 15 degrees either direction) rather than my UIPinchGestureRecognizer. What I'd like to do is only have the rotation be called if the rotation is within a certain range, otherwise cancel it and let the pinch be called.

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  • scroll image using UIscrollview

    - by summer
    i looked at the example from the iphone dev: http://developer.apple.com/iphone/library/samplecode/Scrolling/index.html everything looks cool except that for 5 image they set the "const NSUInteger kNumImages = 5;" what happens is that what if i have 1000 images?and i wan to view it without having to change the number everytime?also if i will to set the number to 1000 and i have only 10 images then in the simulator the user can scroll "blank view" till it reaches count 1000! help please..thanks

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  • Using regexkitlite with strings containing % signs

    - by David Liu
    So I'm using RegexKitLite in my iPhone app, and I'm basically grabbing out a bunch of URLs and names from within a web page. The problem is that whenever it comes across a URL with URL encoded characters like %22 for a double quote or %27 for a single quote, the captured string basically gives me a jumbled overflowed string, containing garbage and even method names. I'm really not doing anything particularly special within the regex, just your basic "startdelimiter(.*)enddelimiter" regex.

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  • Mapkit: Only show annotations in current view

    - by Nic Hubbard
    Instead of loading all annotations that are in my array, I would only like to load the annotations that the user could currently see cased on how far they are zoomed in on the map. So, if the user pans to a place where there are annotations, those would be added, and if they pan away, those would be removed. I assume this would help with memory. Does anyone know how to do something like this? And, is it worth it, or needed?

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  • Stock symbol auto-complete API

    - by Satish
    Hi, I am looking for some stock symbol look-up API. I could able to query yahoo finance with a symbol & could able to retrieve the stock price & other details. I am looking for some auto-complete stock look-up API like if i query fo "Go*" ... how can i get all stock symbols starting with GO* = Goog etc ... is there any APi for wildcard stock symbol searches Any help would be great .. Thanks

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  • Packaging a Bundle with a static library

    - by 4thSpace
    I have a static library that includes some xibs. These will basically be the same across projects. I'd like to include the xibs as part of the library. I can include their veiwcontrollers, reference these controllers in the calling project but then there isn't a xib to load. When I right click the xib in the library project, it can't be part of the target. I thought about creating a CFPluginBundle but that creates a new project. I'd loose all of my IBOutlet and IBAction references. What is the best way to reuse xibs that also have outlets and actions to specific controllers?

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  • How should I load a xib into a detail view for a split view iPad objective app?

    - by editor
    I've got a split view iPad app with table view in the master pane. After drilling down several levels, each time loading a new .xib, I'd like one of the cells to trigger a web page load in the detail pane. Right now I can only get the web page .xib to load in the master pane side -- which is a master pain in my side. The basic load call where "URLWindow" is a class loaded with initWithNibName: [[self navigationController] pushViewController:URLWindow animated:YES]; I want to do this, but it doesn't seem to work: @interface @property (nonatomic, retain) IBOutlet DetailViewController *detailViewController; ... @implementation [[self detailViewController] pushViewController:URLWindow animated:YES]; How should I be loading the URLWindow .xib into a detail view for a split view detail pane?

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  • Adding a UIBarButtonItem to a programattically allocated UINavigationBar

    - by iamdadude
    I have a cameraoverlayview that allocates a UINavigationBar to the top of the screen like this - CGRect navbarFrame = CGRectMake(0, 0, 320, 44); navigationBar = [[UINavigationBar alloc] initWithFrame:navbarFrame]; navigationBar.delegate = self; Now I want to add a UIBarButtonItem as the left button to the navigation bar, but the standard navigationbar.leftitem doesn't work. So I tried doing this - closebutton = [[UIBarButtonItem alloc] initWithTitle:closebuttontext style:UIBarButtonItemStylePlain target:self action:@selector(close)]; navigationBar.topItem.leftBarButtonItem = closebutton; But it doesn't work either. Can anyone point me in the right direction? As far as the navigation bar loading up correctly in the cameraoverlayview, it works 100%.

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  • NSURL doesn't work any time

    - by Marco
    Hello community, i have the following problem sometimes my openURL-Dialog works perfectly, then i looked at the variable from the url and that is the variable: www.brehm-gmbh.de but some other times there are some crazy elements at the end of the variable like this: www.adamczyk-fenster.de%E2%80%8E i get this pages from an .asc file and both are in this file normal without this elements, what can i do to solve this problem? thank you all for helping beforehand

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  • When should you NOT use the asterisk (*) when declaring a variable in Objective C

    - by Jason
    I have just started learning objective c and the asterisk is giving me some trouble. As I look through sample code, sometime it is used when declaring a variable and sometimes it is not. What are the "rules" for when it should be used. I thought it had something to do with the data type of the variable. (asterisk needed for object data types, not needed for simple data types like int) However, I have seen object data types such as CGPoint declared without the asterisk as well? Is there a definitive answer or does it have to do with how and what you use the variable for?

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  • How to change to a grouped table view in xcode without using Interface Builder

    - by Dave
    I have a table that I created within xcode so there is no nib file in this case. I want to make my table into the 'Grouped' style but im not sure how. I think it has somthing to do with the method below, the problem is Im not really sure how to call it, I do understand how methods work I'm just not too sure on where to start with this one: - (id)initWithFrame:(CGRect)frame style:(UITableViewStyle)UITableViewStyleGrouped So could someone tell me how to call it? The problem is that its not a method I wrote its a built in one so I could put that line into my header file but how would I use it in my implementation file? Thanks guys,

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  • Obtaining the tropicity of an image on the iPhone

    - by WhiteTiger
    Hello all I was wondering how it's possible to find out if an image in the iPhone photo library is isotropic or anisotropic. Basically how many millimeters each pixel measures in height and in width. In JPG images the information is hardcoded into the data stream so it's possible to do by simply pointing a const char* to the image file, but I'm not sure I can do that with the data the iPhone image returns. Thank you in advance

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  • Save options selected in AlertDialog spawned from ItemizedOverlay onTap method

    - by ahsteele
    In the description of how to add a list of options to an AlertDialog the official Android documentation alludes to saving a users preferences with one of the "data storage techniques." The examples assume the AlertDialog has been spawned within an Activity class. In my case I've created a class that extends ItemizedOverlay. This class overrides the onTap method and uses an AlertDialog to prompt the user to make a multi-choice selection. I would like to capture and persist the selections for each OverlayItem they tap on. That said I am unsure if utilizing an AlertDialog in this manner is the right approach and open to other suggestions. protected boolean onTap(int index) { OverlayItem item = _overlays.get(index); final CharSequence[] items = { "WiFi", "BlueTooth" }; final boolean[] checked = { false, false }; AlertDialog.Builder builder = new AlertDialog.Builder(_context); builder.setTitle(item.getTitle()); builder.setMultiChoiceItems(items, checked, new DialogInterface.OnMultiChoiceClickListener() { @Override public void onClick(DialogInterface dialog, int item, boolean isChecked) { // for now just show that the user touched an option Toast.makeText(_context, items[item], Toast.LENGTH_SHORT).show(); } }); builder.setPositiveButton("Okay", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int id) { // should I be examining what was checked here? dialog.dismiss(); } }); builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int id) { dialog.cancel(); } }); AlertDialog alert = builder.create(); alert.show(); return true; }

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