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• Android Hello, Gallery tutorial -- "R.styleable cannot be resolved"

  - by Guy Starbuck

  When working on the Hello, Gallery tutorial/sample app, after following the instructions on the site, Eclipse reported that R.styleable cannot be resolved. What is the reason for this error, and how can it be fixed or worked around?

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• iPhone: How do I override the back button in a Navigation Controller?

  - by Angelo Stracquatanio

  Hello, In my app I have a basic Navigation Controller. For all of my views, except one, the controller works as it should. However, for one view in particular, I would like the 'back' button to not go back to the previous view, but to go to one I set. In particular it is going to go back 2 views and skip over one. After doing some research I found that I can intercept the view when it disappears, so I tried to put in code to have it navigate to the page I would like: - (void)viewWillDisappear:(BOOL)animated { [super viewWillDisappear:animated]; //i set a flag to know that the back button was pressed if (viewPushed) { viewPushed = NO; } else { // Here, you know that back button was pressed mainMenu *mainViewController = [[mainMenu alloc] initWithNibName:@"mainMenu" bundle:nil]; [self.navigationController pushViewController:mainViewController animated:YES]; [mainViewController release]; } } That didn't work, so does anyone have any ideas? Thanks!!

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• iPhone: Run method from another view

  - by Nic Hubbard

  I have two views that I am loading, the first is a view with an MKMapView, the second has a table view. I would like to access a method in the first views controller, from the second view. I have been told to use the delegate for this, but I can't get it right. In my app delegate, I have set up added properties for the class of my first view. Then, in my second view, I try to access the first view using the delegate: MyAppDelegate *mainDelegate = (MyAppDelegate*) [[UIApplication sharedApplication] delegate]; Then try: [mainDelegate.mapViewControllerClass myMethodToRun]; It seems to me that it should be calling the myMethodToRun method, which is in my map view. But, it does not work. What is wrong with what I am doing here? There must be a way to access a method of another view...

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• Knowing which annotation is selected and accessing properties of it.

  - by kevin Mendoza

  So far my program can display a database of custom annotation views. Eventually I want my program to be able to display extra information after a button on the annotation bubble is clicked. Each element in the database has a unique entry Number, so I thought it would be a good idea to add this entry number as a property of the custom annotation. The problem I am having is that after the button is clicked and the program switches to a new view I am unable to retrieve the entry number of the annotation I selected. Below is the code that assigns the entry Number property to the annotation: for (id mine in mines) { workingCoordinate.latitude = [[mine latitudeInitial] doubleValue]; workingCoordinate.longitude = [[mine longitudeInitial] doubleValue]; iProspectAnnotation *tempMine = [[iProspectAnnotation alloc] initWithCoordinate:workingCoordinate]; [tempMine setTitle:[mine mineName]]; [tempMine setAnnotationEntryNumber:[mine entryNumber]]; } [mines dealloc]; When the button on an annotation is selected, this is the code that initializes the new view: - (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control { mineInformationController *controller = [[mineInformationController alloc] initWithNibName:@"mineInformationController" bundle:nil]; controller.modalTransitionStyle = UIModalTransitionStyleCrossDissolve; [self presentModalViewController:controller animated:YES]; [controller release]; } and lastly is my attempt at retrieving the entryNumber property from the new view so that I can compare it to the mines database and retrieve more information on the array element. iProspectFresno_LiteAppDelegate *appDelegate = (iProspectFresno_LiteAppDelegate *)[[UIApplication sharedApplication] delegate]; NSMutableArray* mines = [[NSMutableArray alloc] initWithArray:(NSMutableArray *)appDelegate.mines]; for(id mine in mines) { if ([[mine entryNumber] isEqualToNumber: /*the entry Number of the selected annotation*/]) { /* display the information in the mine object */ } } So how do I access this entry number property in this new view controller?

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• Ways to optimize Android App code based on function call stack?

  - by K-RAN

  I've been told that Android OS stores all function calls in a stack. This can lead to many problems and cause the 'hiccups' during runtime, even if a program is functionalized properly, correct? So the question is, how can we prevent this from happening? The obvious solution is to functionalize less, along with other sensible acts such as refraining from excessively/needlessly creating objects, performing static calls to functions that don't access fields, etc... Is there another way though? Or can this only be done through careful code writing on the programmers' part? Does the JVM/JIT automatically optimize the bytecode during compile time to account for this?? Thanks a lot for your responses!!

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• iPhone Encryption Standard - Will this implementation bye-pass apple check?

  - by Futur

  Hi All, I found this implementation, and i am not sure whether we can use this implementation and apple will bye-pass extra check, this is a base-64 implementation. The source code link is http://blog.objectgraph.com/wp-content/uploads/2010/04/CryptTest.zip The web page link is : http://blog.objectgraph.com/index.php/2010/04/20/encrypting-decrypting-base64-encode-decode-in-iphone-objective-c/ Kindly advice me friends.

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• How to cancel a touch sequence

  - by Alex

  I have an UIImage view that responds to touch events. I want to cancel the touch sequence if the touch goes outside of certain bounds. How can I do that? I know that I can inspect the coordinates of the touch object, what I don't know is how to cancel the sequence. I don't see any event in the API that allows for that.

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• Copying contents from one NSMutableArray to another

  - by Sheehan Alam

  I have two NSMutableArrays: NSMutableArray* currentMessages NSMutableArray* items I am trying to copy the contents of items into currentMessages as such: [self.currentMessages addObjectsFromArray:self.items]; When I am debugging self.items contains 30 objects. After this operation self.currentMessages contains 0 objects. Why is the copy not working?

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• Custom UIButton + subviews = no events

  - by user281300

  Basically I have a custom UIButton and this custom button contains subviews. If I add those subviews to my uibutton, then the button stops responding to event changes. I.e if I click on it it doesn't respond to the selector. I have everything set as userInteractionEnabled. I also tried adding touchbegan and this is working. If I remove those subviews, the UIButton works again. Any help would be greatly appreciated. Cheers.

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• setting view's background image in iphone

  - by molloy

  Can I set an image for the view's own background image? I don't want to use UIImageView control. It seems not to be possible using IB. Do I have to do it programatically? Thank you.

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• NSDirectoryEnumerator And Subfolders

  - by Matthew Roberts

  I have an iPhone app that searches a folder, collates an an array of all the audio files, and lets them be played back. The problem is that if there is a subfolder within the folder I am searching, it will just skip over it/not go into its contents. My code is as follows: NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; NSDirectoryEnumerator *direnum = [[NSFileManager defaultManager] enumeratorAtPath:documentsDirectory]; NSString *pname; while (pname = [direnum nextObject]) { [musicArray addObject:[pname stringByDeletingPathExtension]]; } What I want to do is continue to search its subfolders, how would I go about doing that?

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• Picker in UINavigationController

  - by william-hu

  Hi , i use a UIPickerView in my root view of UINavigationController . And i used one button, when i pressed it, pass the data(shows in picker) to the next level view of navigation controller. How should i do this? Thank you!

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• Interface Builder vs Cocos 2D - how choice the best for your app.

  - by baDa

  Hello everyone! I was a flash developer for 3 years, and in the last 5 months, i begin the iphone development, i do 2 applications with interface builder for clients, and now i really want to do a little game, is quite simple, one match 3! I made the engine in interface builder, and seens good to me! But after i read some posts, i really want to try it in the cocos2D! So, in 2 days i rewrite all my first engine for cocos2D, very annoying upsidedown coordinates but ok, i really do! But the performance side by side with interface builder version is really scare! Many Many slow downs at the cocos2d side! And the animation seens bugged to me! I really scare! I really don't know what is the best choice for a simple game. And i want some opinions: Using cocos2d when need some physics? When we have many objects at screen? What is the performance boost i have with cocos2D? I have how to share this 2 applications with you guys?! Without your UID?!

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• Clear applist on developer portal

  - by fyasar

  I'm wondering that, how can i clear my app list on apple developer portal ? I have many test application on developer portal, but i don't need them anymore.

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• NSMutableArray in appdelegate - EXEC_BAD_ACCESS

  - by Tejaswi Yerukalapudi

  Hi, I'm trying to use a global array in the appdelegate as a quick fix for a demo I'm building. The relevant code for this .h file has the declaration { NSMutableArray *trnEntered; } @property (nonatomic, retain) NSMutableArray *trnEntered .m file has the following code - trnEntered = [[NSMutableArray alloc] init]; NSLog(@"%@",[trnEntered count]); // prints null. [trnEntered addObject:@"1"]; NSLog(@"%@",[trnEntered count]); // exec bad access. Not sure where I'm going wrong here. Looks fairly straight forward. Thanks for the help in advance, Teja.

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• How to create svn folder in mac os x

  - by niceramar

  hi, i am working on iphone project, i like to create an svn folder and link that one to my server I tried to run the below command fsp3s-MacBook-Pro:~ fsp3$ svnadmin create /ram/Code/SVN i got the below error svnadmin: Repository creation failed svnadmin: Could not create top-level directory svnadmin: Can't create directory '/ram/Code/SVN': No such file or directory How to create an SVN folder in mac os x? thanks!

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• function with multiple arguments

  - by Viral

  hi, how to pass multiple arguments in a single function in objective c? I want to pass 2 integer values and the return value is also integer.

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• Share Link - Perform action in background

  - by Justin

  I have an application that will accept URLs from the built in web browser via the "Share page" menu item. I'm using the send intent and it works just fine. However, I'd like to accept a URL and process it in the background without bringing my application to the front. I don't want the user to have to actually leave the web browser. It will notify the user it has finished processing the URL with a Toast message. I'm just not sure what type of activity should be used for this. A good example of this behavior is the "Read Later" instapaper application in the android market. Any help would be greatly appreciated.

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• Is it possible to create a UINavigationController within a ModalPopup?

  - by aloo

  Hi I have a modalViewController that I am popping up using [self presentModalViewController:myController animated:YES]; I have an event occurring within myController which I would like to result in another controller being pushed onto the navigation stack ON TOP OF myController (which again has been presented modally). How can I do this? I have tried the following from within myController: UINavigationController* navController = [[UINavigationController alloc] initWithRootViewController:self]; NewController* n = [[NewController alloc] init]; [navController pushViewController:n animated:YES]; [n release]; This does not work however....

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• How to hide app title in android

  - by ryan

  i want to hide the app title.

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• I know my title view is a UISegmentedControl, Xcode still warns me...

  - by Travis

  I have a UINavigationalController of which I've set the titleView to a UISegmentedControl. Later on, if I do something like. [self.navigationItem.titleView setEnabled:NO forSegmentAtIndex:0]; I get a warning saying that UIView may not respond to this message. Of course it does and works fine but how do I properly get rid of the warning?

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• Using fonts that aren't on iPhone

  - by 4thSpace

  I'd like to use some fonts that aren't part of the iPhone OS. I've seen games that use non standard fonts. I can install the fonts, create images for each one in Photoshop and then use those images in the iPhone app. However, I don't think that is a practical way to go. If the color or tint needs to be adjusted (because of background) or size, I'll have to redesign every font I'm using. Is there a better way to do this? I read this http://stackoverflow.com/questions/360751/can-i-embed-a-custom-font-in-an-iphone-application and downloaded the open source font label app. However, it crashes most of the time when I try using particular fonts. In regards to the last comment about using UIFont with the fontWithName:size, that certainly doesn't work. Your font variable will be nil. Listing all available fonts reveals why - none of the custom fonts are in the list. I've also read http://stackoverflow.com/questions/566054/how-do-i-include-a-font-with-my-iphone-application, which definitely does not work. Same as last comment in above link.

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• Can content provider notify observer without calling NotifyChange() explicity - Android

  - by Amit

  In ContentProvider we explicity notify all registered observers to it by calling getContext().getResolver().notifyChange(URI,ContentObserver); I want to know if this is necessary. Is there any possibility that observers get notified, even we don't use that statement at all in our contentProvider. Is there any other way to do the same thing.

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• provisioning profile problem?

  - by senthilmuthu

  hi, i am new to creating provisioning profile.can i use same provisioning profile for all applications(except using *, we can install one app at a time)?for example if i go bundle identifier and give my comapanyname only as com.mycompanyname(apple id).${PRODUCT_NAME:identifier},and also i set my certifate,after that will my application run in device?(without creating provisioning file for each application),i have seen like this in my friend system,how is it possible?any help please?

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• how can i get an offline version of the iphone development handbook?

  - by sarmenhba

  how can i get an offline version of the iphone development handbook?

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