Search Results

Search found 9848 results on 394 pages for 'ios sdk'.

facebook twitter digg google delicious technorati stumbleupon myspace wordpress linkedin gmail igoogle windows live tumblr viadeo yahoo buzz yahoo mail yahoo bookmarks favorites email print

Page 245/394 | < Previous Page | 241 242 243 244 245 246 247 248 249 250 251 252  | Next Page >

  • Draw arrow on line

    - by Pete
    Hi, I have this code: CGPoint arrowMiddle = CGPointMake((arrowOne.x + arrowTo.x)/2, (arrowOne.y + arrowTo.y)/2); CGPoint arrowLeft = CGPointMake(arrowMiddle.x-40, arrowMiddle.y); CGPoint arrowRight = CGPointMake(arrowMiddle.x, arrowMiddle.y + 40); [arrowPath addLineToScreenPoint:arrowLeft]; [arrowPath addLineToScreenPoint:arrowMiddle]; [arrowPath addLineToScreenPoint:arrowRight]; [[mapContents overlay] addSublayer:arrowPath]; [arrowPath release]; with this output: http://yfrog.com/edschermafbeelding2010032p What have i to add to get the left and right the at same degree of the line + 30°. If someone has the algorithm of drawing an arrow on a line, pleas give it. It doesn't matter what programming language it is... Thanks

    Read the article

  • Why is my view controllers view not quadratic?

    - by mystify
    I created an UIViewController subclass, and figured out that the default implementation of -loadView in UIViewController will ignore my frame size settings in a strange way. To simplify it and to make sure it's really not the fault of my code, I did a clean test with a plain instance of UIViewController directly, rather than making a subclass. The result is the same. I try to make an exactly quadratic view of 320 x 320, but the view appears like 320 x 200. iPhone OS 3.0, please check this out: UIViewController *ts = [[UIViewController alloc] initWithNibName:nil bundle:nil]; ts.view.frame = CGRectMake(0.0f, 0.0f, 320.0f, 320.0f); ts.view.backgroundColor = [UIColor cyanColor]; [self.view addSubview:ts.view]; like you can see, I do this: 1) Create a UIViewController instance 2) Set the frame of the view to a quadratic dimension of 320 x 320 3) Give it a color, so I can see it 4) Added it as a subview. Now the part, that's even more strange: When I make my own implementation of -loadView, i.e. if I put this code in there like this: - (void)loadView { UIView *v = [[UIView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 320.0f, 320.0f)]; v.backgroundColor = [UIColor cyanColor]; self.view = v; [v release]; } then it looks right. Now lets think about that: In the first example, I do pretty much exactly the same, just that I let UIViewController create the view on it's own, and then take it over in order to change it's frame. Right? So why do I get this strange error? Right now I see no other way of messing around like that to correct this wrong behavior. I did not activate anything like clipsToBounds and there's no other code touching this.

    Read the article

  • remine focus on the main activity (while switching activities)

    - by rayman
    Hi, Ive got two activities in the same application. the first one is with gui(main activity) the second one is a listener which works infinite without gui. Wierd problem occurs: i am running the second activity with a diffrent thread so i could keep on manipulate the gui.. but for some reason, the gui losing it's focus for some reason, only when i press 'home' and come back to it, then i can continune maniuplate the gui. it feels like after i launch the second activity, the gui activity(the main) is losing the focus. how come? in my mainactivity i have: setContentView(R.layout.main); and its setted as the launcher in the manifest. thanks, ray.

    Read the article

  • can I store an id value in array of float type ?

    - by srikanth rongali
    I used, for(id value in values) to get the value from an NSArray. Now I want to store it in 2 dimensional float array[][]. When I try to assign the values to array it is giving error:incompatible types in assignment. I tried to cast the value but I got error: pointer value used where a floating point value was expected. I need to store the values in an 2 dimensional array . How can I make it ? Thank You. @implementation fromFileRead1 NSString *fileNameString; int numberOfEnemies, numberOfValues; -(id)init { if( (self = [super init]) ) { NSString *path = @"/Users/sridhar/Desktop/Projects/exampleOnFile2/enemyDetals.txt"; NSString *contentsOfFile = [[NSString alloc] initWithContentsOfFile:path]; NSArray *lines = [contentsOfFile componentsSeparatedByString:@"\n"]; numberOfEnemies = [lines count]; NSLog(@"The number of Lines: %d", numberOfEnemies); for (id line in lines) { NSLog(@"Line %@", line ); NSString *string1 = line; NSArray *split1 = [string1 componentsSeparatedByString:@","]; numberOfValues = [split1 count]; NSLog(@"The number of values in Row: %d", numberOfValues); for (id value in split1) { NSLog(@"value %@", value); float value1; value1 = [split1 objectAtIndex:2]); NSLog(@"VAlue of Value1 at index 2: %f", value1 ); } } } return self; } @end In enemyDetal.txt I have 1,3,3 2,3,2.8 10,2,1.6

    Read the article

  • get iphone window background color

    - by Jonathan
    I've been looking at the Stanford University iphone videos on iTunes U. And saw the teacher trying to do something similar to this code but he realised and said it didn't work though I didn't get why: - (IBAction)flashPressed{ if (window.backgroundColor == [UIColor magentaColor]){ window.backgroundColor = [UIColor redColor]; }else { window.backgroundColor = [UIColor magentaColor]; } } Objective-C, windows based application. Not sure what else you need to know.

    Read the article

  • Setting UITableViewCell height is expensive

    - by Sheehan Alam
    I am doing a comparison in - (CGFloat)tableView:(UITableView *)tblView heightForRowAtIndexPath:(NSIndexPath *)indexPath It seems like performance of my app really slows down when I check if a cell.detailTextLabel.text isEqualTo:@"None"; What is a better way of doing the comparison and setting the cell height?

    Read the article

  • Compare filedate before download it

    - by Christian
    Hi, I have an app which is downloading several plist-files when starting the app and storing them in the NSHomeDirectory/Documents/ path. This will take some time and often there is only one file that changed. My questions are: -how can I get the date of the files (the stored one and the file on my webserver)? -how can I compare the date of the stored file with the date of the file on my webserver?

    Read the article

  • NSManagedObject How To Reload

    - by crissag
    I have a view that consists of a table of existing objects and an Add button, which allows the user to create a new object. When the user presses Add, the object is created in the list view controller, so that the object will be part of that managed object context (via the NSEntityDescription insertNewObjectForEntityForName: method). The Add view has a property for the managed object. In the list view controller, I create an Add view controller, set the property to the managed object I created, and then push the Add view on to the navigation stack. In the Add view, I have two buttons for save and cancel. In the save, I save the managed object and pass the managed object back to the list view controller via a delegate method. If the user cancels, then I delete the object and pass nil back to the list view controller. The complication I am having in the add view is related to a UIImagePickerController. In the Add view, I have a button which allows the user to take a photo of the object (or use an existing photo from the photo library). However, the process of transferring to the UIImagePickerController and having the user use the camera, is resulting in a didReceiveMemoryWarning in the add view controller. Further, the view was unloaded, which also caused my NSManagedObject to get clobbered. My question is, how to you go about reloading the NSManagedObject in the case where it was released because of the low memory situation?

    Read the article

  • mutableCopyWithZone updating a property value.

    - by Jim
    I have a Class that I need to copy with the ability to make changes the value of a variable on both Classes. Simply put the classes need to remain clones of each other at all times. My understanding of the documentation is that I can do this using a shallow copy of the Class which has also been declared mutable. By shallow copying the pointer value for the variable will be cloned so that it is an exact match in both classes. So when I update the variable in the original the copy will be updated simultaneously. Is this right? As you can see below I have used mutableCopyWithZone in the class I want to copy. I have tried both NSCopyObject and allocWithZone methods to get this to work. Although I'm able to copy the class and it appears as intended, when updating the variable it is not changing value in the copied Class. - (id)mutableCopyWithZone:(NSZone *)zone { //ReviewViewer *copy = NSCopyObject(self, 0, zone); ReviewViewer *copy = [[[self class] allocWithZone:zone] init]; copy->infoTextViews = [infoTextViews copy]; return copy; } infoTextViews is a property declared as nonatomic, retain in the header file of the class being copied. I have also implemented the NSMutableCopying protocol accordingly. Any help would be great.

    Read the article

  • UserID is returned as 0 and Token has the 3rd part missing for a Canvas Facebook Application!

    - by Nader Rahimizad
    Hi Guys, Do you know what could cause this as a return for a Facebook Canvas app. It works for most users of our site but some users, it generates this and i cant figure out what would cause this. The userID is returned as 0 and the Token seems to be missing something. there is no other way for the users to reach the site other than visiting the Facebook App page... Please let me know what i can do to prevent this from happening UserID: 0 Token: 104743107829|b8bbc20eac6127d8a9a85451490a0663 Quesrty String:signed_request=W13Y8eiSHTyyqBnyJjll8WngPFeQqabhVBkJaHnXYb4.eyJhbGdvcml0aG0iOiJITUFDLVNIQTI1NiIsImlzc3VlZF9hdCI6MTI5NDU5NjIwMywidXNlciI6eyJsb2NhbGUiOiJpdF9JVCIsImNvdW50cnkiOiJpdCJ9fQ

    Read the article

  • Obj-C Sending Messages Between Classes

    - by user544359
    I'm a newbie in iPhone Programming. I'm trying to send a message from one view controller to another. The idea is that viewControllerA takes information from the user and sends it to viewControllerB. viewControllerB is then supposed to display the information in a label. viewControllerA.h #import <UIKit/UIKit.h> @interface viewControllerA : UIViewController { int num; } -(IBAction)do; @end viewControllerA.m #import "viewControllerA.h" #import "viewControllerB.h" @implementation viewControllerA - (IBAction)do { //initializing int for example num = 2; viewControllerB *viewB = [[viewControllerB alloc] init]; [viewB display:num]; [viewB release]; //viewA is presented as a ModalViewController, so it dismisses itself to return to the //original view, i know it is not efficient [self dismissModalViewControllerAnimated:YES]; } - (void)dealloc { [super dealloc]; } @end viewControllerB.h #import <UIKit/UIKit.h> @interface viewControllerB : UIViewController { IBOutlet UILabel *label; } - (IBAction)openA; - (void)display:(NSInteger)myNum; @end viewControllerB.m #import "viewControllerB.h" #import "viewControllerA.h" @implementation viewControllerB - (IBAction)openA { //presents viewControllerA when a button is pressed viewControllerA *viewA = [[viewControllerA alloc] init]; [self presentModalViewController:viewA animated:YES]; } - (void)display:(NSInteger)myNum { NSLog(@"YES"); [label setText:[NSString stringWithFormat:@"%d", myNum]]; } @end YES is logged successfully, but the label's text does not change. I have made sure that all of my connections in Interface Builder are correct, in fact there are other (IBAction) methods in my program that change the text of this very label, and all of those other methods work perfectly... Any ideas, guys? You don't need to give me a full solution, any bits of information will help. Thanks.

    Read the article

  • Problem loading a contents URL into a string

    - by bebeTech
    I've been using this method for a few weeks now as suggested on my previous question and the app now keeps crashing with a Protocol 443 error - something about unable to resolve the address. Worked fine when first installed and then just stopped. The same with on the device itself, worked fine until this morning and now the same issue?? Nothing wrong with the URL as I can still load in a browser. If I leave it for a couple of days it starts working again?? Is there a more effecient way of using the Http POST and GET functions? All I am trying to do is perform a login and save the resulting page to a string. Is there a more Android friendly way?

    Read the article

  • Android: Communication with host computer

    - by dannyn382
    I am looking for ideas as to how all of you can think to solve this issue. I am going to be using an Android Tablet as basically a touch screen input for a project. I need to be able to control servos and solenoids and such, so I will be using a Raspberry Pi to do this. I am looking for ideas on how to get the tablet and the Raspberry Pi to talk. Here are a few that I have though of so far. Use Wifi (which I really do not want to, Ethernet would be okay) to ssh into the Raspberry Pi (with an external library) and run scripts that way from the Android app. Use a com port for Android (maybe Andropod if there hardware becomes available?) and run scripts on the Raspberry Pi. Those are probably two of the "best" ideas that I can think of for now. Can anyone think of any other "better" ideas? Thanks in advance for the help, Dan

    Read the article

  • expecte ')' before className

    - by Akbarbuneri
    Hi I have a class DataObject as Header ::: #import <Foundation/Foundation.h> @interface DataObject : NSObject { NSString *erorrMessage; BOOL hasError; NSDictionary *dataValues; } @property(nonatomic, retain)NSString *erorrMessage; @property(nonatomic)BOOL hasError; @property(nonatomic, retain)NSDictionary *dataValues; @end Class Implementation:::: #import "DataObject.h" @implementation DataObject @synthesize erorrMessage; @synthesize hasError; @synthesize dataValues; @end And I have another class as DataManager Header as :::: #import <Foundation/Foundation.h> @interface DataManager : NSObject - (DataObject *)getData :(NSString*)url; @end Implementation :::: #import "DataManager.h" #import "DataObject.h" #import "JSON.h" @implementation DataManager - (DataObject *)getData :(NSString*)url{ DataObject* dataObject = [[DataObject alloc]init]; NSString *urlString = [NSString stringWithFormat:url]; NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:urlString]]; //TODO: Here we have to check the internet connection before requesting. NSError * erorrOnRequesting; NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:&erorrOnRequesting]; NSString* responseString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]; if( erorrOnRequesting != nil) { dataObject.hasError = YES; dataObject.erorrMessage = @"Error on requsting to the web server"; return dataObject; } NSError *errorOnParsing; SBJSON *json = [[SBJSON new] autorelease]; NSDictionary *dataValues = [json objectWithString:responseString error:&errorOnParsing]; [responseString release]; if(errorOnParsing != nil) { //TODO: We have to send the website a feedback that there is some problem on the server end. dataObject.hasError = YES; dataObject.erorrMessage = @"Error on parsing, the server returned invalid data."; return dataObject; } dataObject.hasError = NO; dataObject.dataValues = dataValues; return dataObject; } @end Now when I build I got an error in the DataManager header where I #import Dataobject header, it says "error: expected')' before DataObject" I don;t understand what I miss. Thanks for the help..

    Read the article

  • Help adding a backgroundView to UITableViewCell

    - by Alex
    I'm getting really desperate trying to add a UIImageView to UITableViewCell.backgroundView. All my efforts have resulted in this crappy rendering: It looks like the cell's label's white background is sitting on top of cell's background and covering portions of it. I tried setting the label's background color to clear, or some other color and it does not have any event. It is always white. The reason I know it's the text label's background causing this white area is that if I don't do [cell setText:@"Cell text here"]; the white area is gone and I see just the cell's background image. Here's the code that I'm using. The table view is added in the .xib file and UITableView is added to UIViewController: - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { return 1; } - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { return [myCollection.items count]; } - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { NSUInteger rowIndex = indexPath.row; static NSString *CellIdentifier = @"Cell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease]; cell.backgroundView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"darkCellBackground.png"]]; cell.selectedBackgroundView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"darkCellBackground.png"]]; } [cell setText:@"Cell text here"]; return cell; } - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { // Navigation logic may go here. Create and push another view controller. // AnotherViewController *anotherViewController = [[AnotherViewController alloc] initWithNibName:@"AnotherView" bundle:nil]; // [self.navigationController pushViewController:anotherViewController]; // [anotherViewController release]; [tableView deselectRowAtIndexPath:indexPath animated:YES]; } - (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath { return NO; } I'm sure I'm doing something wrong but cant quite figure out what.

    Read the article

facebook twitter digg google delicious technorati stumbleupon myspace wordpress linkedin gmail igoogle windows live tumblr viadeo yahoo buzz yahoo mail yahoo bookmarks favorites email print

< Previous Page | 241 242 243 244 245 246 247 248 249 250 251 252  | Next Page >