ios4

问题 I am taking screenshot image from currentview.but i want to set frame….don't want to convert fullview as image.I gave frame size..but it takes always Image as fullview..any help please? CGRect rectt = CGRectMake(100, 150,150,200); UIGraphicsBeginImageContext(rectt.size); [self.layer renderInContext:UIGraphicsGetCurrentContext()]; UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); UIImageView *imgView = [[UIImageView alloc] initWithFrame:rectt]; 回答1:

问题 what is the difference between strong (in LLVM compiler) and retain( in GCC compiler) ? 回答1: strong is a new feature in iOS 5 Automatic Reference Counting (ARC) which behave the same as retain in iOS 4. Referenced Article. Also, check out this other SO question: @property definitions with ARC: strong or retain? 回答2: strong is a new keyword that was introduced along with arc (automatic reference counting). There are a bazillion articles about it if you search google, including this one http:/

问题 I have created some PDF files programatically, which i am storing into the devices memory using the following code >>>> NSString *fileName = [NSString stringWithFormat:@"SampleTextFile.pdf",strFinalString]; NSArray *path = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *saveDirectory = [path objectAtIndex:0]; NSString *saveFileName = fileName; NSString *documentPath = [saveDirectory stringByAppendingPathComponent:saveFileName]; I can see the file in

问题 i am building up a project in ios platform and want to use two language in this application and also want . the user can change the language on Runtime suppose we can take two language button button 1 for english and button 2 for german and the user can change the application language at any time by using these button . any help or tutorials Thanks in advance 回答1: Assuming that you have created localizations for English and German, your app will use the language selected in Settings (this is

问题 I've added UIFileSharingEnabled to the .plist. Per suggestions, I have: removed the app and redeployed it several times attempted to disconnect after redeploying I have not been able to get the app visible in the File Sharing section in iTunes. On another app, this works flawlessly. The app where it doesn't work has a bit exotic internals (an easily portable game; as such, it has its own mainloop, it doesn't have a main nib, ...). The app where it does work is pretty much standard deal. Also,

问题 I have a UILabel and I would like to make it react to a touch. I tried putting a button on top of the label, thanks to this I could interact with the button. However, the button cannot be fully transparent, right? I could set an alpha of the button to 0,02, but it is still visible on by background. How to solve this? Maybe I could set the properties in some other way to make them fully invisible? Or is there some other solution? 回答1: First, why not just use a button and set the button title

问题 I have a questionary application, navigation based which I create and push my tableviews eachtime from a nib. there is no leakage and in instruments live bytes seems around 2-3 MB. I tested in real device (jailbroken IOS4 iPhone), when I go through deep in the navigation (around 200 page pushes) I can see that memory usage goes upto 150 MB! when I navigate back to root then they are all freed, but isnt this a weird behavior? (around 800 KB for each nib view and no big data or images in it)

问题 Anyone known if exist some way to check if exist one update available on App Store?? I want notify to user the new updates on my application begins... Thanks 回答1: Just use ATAppUpdater, it is 1 line, thread-safe and fast. It also have delegate methods if you would like to track user action. Here is an example: - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { [[ATAppUpdater sharedUpdater] showUpdateWithConfirmation]; // 1 line of

问题 this is my code for apple push notification, when the application is running and notification coming i am incrementing the badge count and getting desired result when i click home button, on app icon. but when i am not running my application and notification comes, it didn't auto increment badge count and remains to only 1. the value 1 is coming from server. can any one point out where i am doing wrong. thanks in advance. - (BOOL)application:(UIApplication *)application

问题 this is my code for apple push notification, when the application is running and notification coming i am incrementing the badge count and getting desired result when i click home button, on app icon. but when i am not running my application and notification comes, it didn't auto increment badge count and remains to only 1. the value 1 is coming from server. can any one point out where i am doing wrong. thanks in advance. - (BOOL)application:(UIApplication *)application