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  • image steganography in mobile

    - by user309860
    i am a fresher to steganographic concepts and would like to develop a mobile application for implementing image steganography with encryption.i would like to guidance about the suitable ALGORITHMS that can b used and various steps to follow..pls do help..

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  • Installing 2 versions of app on one device

    - by dl
    I've got two branches of an iPhone app going. I would like to load them both onto my provisioned iPad at the same time. The iPad sees them as the same app though and writes over whichever one is currently installed. Does anyone have good system for loading two versions concurrently. Thanks!

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  • Why do I have memory problems?

    - by Tattat
    I got this error from XCode: objc[8422]: FREED(id): message release sent to freed object=0x3b120c0 I googled and find that is related to the memory. But I don't know which line of code I go wrong, any ideas? After I launch my app in simulator, it prompts a second, than, no other error except the error above. @implementation MyAppDelegate @synthesize window; @synthesize viewController; - (void)applicationDidFinishLaunching:(UIApplication *)application { // Override point for customization after app launch [window addSubview:viewController.view]; [window makeKeyAndVisible]; [self changeScene:[MainGameMenuScene class]]; } - (void)dealloc { [viewController release]; [window release]; [super dealloc]; } - (void) changeScene: (Class) scene { BOOL animateTransition = true; if(animateTransition){ [UIView beginAnimations:nil context:NULL]; [UIView setAnimationDuration:0.5]; [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:window cache:YES]; //does nothing without this line. } if( viewController.view != nil ) { [viewController.view removeFromSuperview]; //remove view from window's subviews. [viewController.view release]; //release gamestate } viewController.view = [[scene alloc] initWithFrame:CGRectMake(0, 0, IPHONE_WIDTH, IPHONE_HEIGHT) andManager:self]; //now set our view as visible [window addSubview:viewController.view]; [window makeKeyAndVisible]; if(animateTransition){ [UIView commitAnimations]; } }

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  • how can I pass method Of one class to another class ?

    - by srikanth rongali
    I have a ClassA. in ClassA there is a method(-(void)parseData:). I have a ClassB which have ClassA object. And ClassB *aClassB is member variable of ClassA. In ClassB the code is aClassB = [[ClassB alloc]init]; [aClassB parseData]; I have ClassC. I need to use the method parseData of ClassB in ClassC. I think I can use the object created in ClassB of ClassA. How can I pass the method to ClassC ? Thank You.

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  • UITableViewCell highlighting issue - iPhone

    - by harekam_taj
    Hey guys, I have a UITableView and I am having an issue with whenever I try to click on the Cell. When the cell is highlighted it puts some test on top of the text that is already on the cell make the text on the cell hard to read. This only happens while I have the cell highlighted. Please help me with this issue. Thanks

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  • AccessoryDisclosureIndicator and AccessoryCheckmark on the left side

    - by embedded
    Hi I'm adding support for right-to-left languages for the UITableView. now I need to move the AccessoryDisclosureIndicator and AccessoryCheckmark from the right corner to the left. I'm taking the UIImageView path and Now I'm looking for 2 png icons: one for the AccessoryDisclosureIndicator arrow to the left and the second for the AccessoryCheckmark. Does anyone know where I can get those 2 icons? Is it possible when the user clicks on some cell to switch to the other view to the left and not to the right? Thanks

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  • UINavigationController's back button disappears?

    - by QAD
    I notice something strange happens to one of my view controller: the back button disappears, yet it's possible to go back to previous view controller by tapping the top left corner (i.e where the button should reside). In my entire file there's no line that set self.navigationItem.hidesBackButton to YES; also NSLog prints 0 as self.navigationItem.hidesBackButton's value in viewDidLoad. This occurs in both the simulator and real device. Any ideas?

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  • Customized annotation problem

    - by user128647
    I want my custom UIView (.Xib View) to appear when user tabs on pins (not apple's callOutBubble) and in that UIView there should be a button which fires an IBAction on touched down event. Therefore I have added an AddObserver method to MKAnnotationView. which responds to touch events over pin in MKMapView. I have also added 3 buttons over that XIB view, which have also assigned IBActions. But when I run my application, buttons in the customized annotation view are not responding to IBAction (Touch Down). Why does this happen, and how can I fix it? I need to call a method when those 3 buttons are tabbed.

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  • When will [MFMailComposeViewController canSendMail] return NO

    - by pythonquick
    M iPhone app is using the MFMailComposeViewController class to send an in-app email with an attachment. The app will only attempt to display the mail composer dialog if the "canSendMail" method of class MFMailComposeViewController returns true (YES). Specifically, if the following method returns YES, it shows the mail composer, otherwise the user is presented with an error alert dialog stating that there are no email accounts set up on the device: - (BOOL)canDeviceSendEmail { Class mailClass = (NSClassFromString(@"MFMailComposeViewController")); return mailClass != nil && [mailClass canSendMail]; } A team of testers have reported that they get this error alert dialog, even when email accounts are set up on the device. The tester used an iPhone 3G with OS 3.1.3. Therefore the MFMailComposeViewController class must have existed, and the "canSendMail" method must have returned NO. My question is therefore: apart from the case when there are no email accounts set up on the device, in what other circumstances can the "canSendMail" method return NO? ~ Thanks

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  • How to hang up (disconnect, terminate,..) incomings call???

    - by Cesar Valiente
    "How do you hang up incoming calls (in Android of course)?" First, I know this question has been asked and answered several times, and the response is always "you can't". But if we look in the market we get a few applications (all private software, no access to the source code... :-( ) that do this action, such as CallFilter, Panda firewall and others... So... does somebody know how these apps do the hang up action, (or terminate, or disconnect or whatever you call it..)? And other question, if the first don't get a response.. does somebody know how send an incoming call to the voice mail? Of course, all questions are about how to do it programmatically. So with the voicemail question I know there's a flag in contacts that is used for that, but like I said, I'd like to know the programmatical way. Thanks all!

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  • how to get variable stored in another object using objective c

    - by mac
    Hi All SaveNotes *saveNotes = [[SaveNotes alloc]initWithTitleString:title descrString:descr]; [titleDescrObjects addObject:saveNotes]; [saveNotes release]; from the above code i have saved title,descr to a class SaveNotes , and then i have stored that object in my NSMutableArray - titleDescrObjects, Its working fine, i need to get particular objects "descr" alone, how to get the descr from objectAtIndex:i i am trying for (int i=0; i<[titleDescrObjects count]; i++) { NSLog(@"\n ((%@))\n",[titleDescrObjects objectAtIndex:i].descr); } Thanks in advance,

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  • Use of viewDidUnoad

    - by user338111
    What is the use of viewDidUnload and didReceiveMemoryWarning methods? When they actually get called? what are the difference between dealloc, viewDidUnload and didrecievedmemorywarning?

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  • memory management: am i doing something wrong here?

    - by z s
    Hi, In a very small number of cases in my iphone app, I get a crash after the for loop in the code below: ABAddressBookRef addressBookInit = ABAddressBookCreate(); CFMutableArrayRef abContacts = (CFMutableArrayRef)ABAddressBookCopyArrayOfAllPeople(addressBookInit); // get array of all contacts CFArraySortValues (abContacts, CFRangeMake(0, CFArrayGetCount(abContacts)), (CFComparatorFunction)ABPersonComparePeopleByName, (void *)ABPersonGetSortOrdering()); NSArray *copypeople = (NSArray *) abContacts; NSMutableArray *tempTheadlist = [[NSMutableArray alloc] init]; for (int i=0; i < copypeople.count; i++) { NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; ABRecordRef record = [copypeople objectAtIndex:i]; if (blah blah) [tempThreadList addObject: someObject]; [pool release]; } // POINT OF CRASH AFTER LOOP ENDS if (tempTheadlist.count > 0) [NSThread detachNewThreadSelector: @selector(loading_pictures:) toTarget:self withObject:tempTheadlist]; [tempTheadlist release]; [copypeople release]; CFRelease(addressBookInit); Any reason why it should crash at any point here?

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  • Sending data between activities within my app?

    - by user246114
    Hi, I have a TabActivity, and the tabs point to sub activities. Is there a way I can send a 'message' to those child activities? I just want to pass a string across, not sure if this is possible. I have some data being fetched by the parent TabActivity, and the child tabs can't do anything useful until the parent is done fetching. When fetching is complete, I'd like to pass that data to the child activities so they can do something useful with it. Notmally I'd set the data to be passed in the Intent when first creating the activity, but in this case I can't do that. Thanks

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  • when would you use PendingIntent?

    - by Moshik
    Hi, I tried to understand from the api the porpese of PendingIntent, coz sometimes some method i use requires this, i still didnt get the idea right, anyone could exaplin? why cant i juse use context? thanks, moshik

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