ios4

问题 I have been looking for a way to show the iPhone screen (not the simulator) on a monitor or projector for demo purposes. Previous SO post suggested jailbreak (Veency, iDemo/DemoGod, screensplitr) or simulator. Release notes iOS 3.2 (External Display Support) and iOS 4.0 (Inherited Improvements) mentions that it should be possible to connect external displays to iOS 4.0 devices. Is it now possible to demo an iPhone device on a monitor without using the simulator, or are the release notes about

问题 XCode gives me this warning when I build the app for release. Application failed codesign verification. The signature was invalid, or it was not signed with an Apple submission certificate. (-19011) Do I need to delete all entries from my keychain and redo getting a certificate, provisioning profile, etc? I can build and debug on the iPhone and iPad without a problem. If you know how I can solve this dilemma, please provide exact steps or a way for me to contact you about this. Thanks ---

问题 Apple recommends dismissing any UIAlertViews/UIActionSheets when entering background state in iOS 4. This is to avoid any confusion on the user's part when he relaunches the application later. I wonder how I could elegantly dismiss all UIAlertViews at once, without retaining a reference to it everytime I set one up... Any idea ? 回答1: I was intrigued by Dad's answer (funny username :), and curious why it was down-voted. So I tried it. Here is the .m part of a subclass of UIAlertView. Edit:

问题 In iOS 4.0 Apple has redesigned the backup process. iTunes used to store a list of filenames associated with backup files in the Manifest.plist file, but in iOS 4.0 it has moved this information to a Manifest.mbdb You can see an example of this file by making a backup with your iOS 4.0 devices and looking in your ~/Library/Application Support/MobileSync/Backup folder (Look inside the subfolders with the most recent date) Here's a screenshot of what the file looks like in a text editor:

问题 I can find the UIKit header files but i'd like to see how some of the UIKit classes are being implemented because i'm trying to create some custom controls. So basically i'm trying to find the UIKit .m files, where would they be located on my mac? 回答1: They aren't on your Mac (in source form). Only Apple has access to most UIKit source. What you have on your Mac is already compiled into library binary files. 回答2: The source code (as hotpaw2 said) is only available to Apple, but there are

问题 I can find the UIKit header files but i'd like to see how some of the UIKit classes are being implemented because i'm trying to create some custom controls. So basically i'm trying to find the UIKit .m files, where would they be located on my mac? 回答1: They aren't on your Mac (in source form). Only Apple has access to most UIKit source. What you have on your Mac is already compiled into library binary files. 回答2: The source code (as hotpaw2 said) is only available to Apple, but there are

问题 Is there an apple-house-made way to get a UISlider with a ProgressView. This is used by many streaming applications e.g. native quicktimeplayer or youtube. (Just to be sure: i'm only in the visualization interested) cheers Simon 回答1: Here's a simple version of what you're describing. It is "simple" in the sense that I didn't bother trying to add the shading and other subtleties. But it's easy to construct and you can tweak it to draw in a more subtle way if you like. For example, you could

问题 Is there an apple-house-made way to get a UISlider with a ProgressView. This is used by many streaming applications e.g. native quicktimeplayer or youtube. (Just to be sure: i'm only in the visualization interested) cheers Simon 回答1: Here's a simple version of what you're describing. It is "simple" in the sense that I didn't bother trying to add the shading and other subtleties. But it's easy to construct and you can tweak it to draw in a more subtle way if you like. For example, you could

问题 These kind of question has been asked a number of times but i have some specific situation going on. When my application is active and I receive a PUSH message i'm successfully able to parse the custom payloads and such. However when my application is in the background and the PUSH arrives the user has to click on the 'View/Open' button in order to get the didReceiveRemoteNotification called and the didFinishLaunchingWithOptions is called after that. I need to have my application decide if

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 6 years ago . I am developing an application in iOS where I want to provide a password option..where user can enter a password and set it,and later when he opens the app,it should first ask for password to enter, So can we implement this? Any ideas ,suggestions are welcomed..... Regards Ranjit