ios4

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Is ARC really supported in iOS 4? The iOS 4.2 SDK is missing ARC-related symbols at linking time

I\'ve read and heard since ARC was first announced that it was a compile-time thing and would be backwards-compatible with iOS 4. I have successfully refactored my project to ARC using Xcode 4.2\'s au[详细]

2023-04-12 11:19 分类：问答
Changing the system clock in iOS

I have been trying to find a functionality to change the system clock in my iOS app. Can anyone please开发者_JAVA技巧 point me in the right direction? Do I have access to changing the system clock?[详细]

2023-04-12 10:01 分类：问答
iPhone Lite Version Upgrade

I have a lite version of my application.I want to include a link or something that sends the user to the App St开发者_C百科ore so they can purchase the full version of my App.[详细]

2023-04-12 09:04 分类：问答
Can I check battery status of iPhone in background state?

I ne开发者_开发知识库ed to check battery status in my applicaiton when it is in background state. I can check batter status in running state. Can NSNotificationCenter be used to check battery status i[详细]

2023-04-12 07:37 分类：问答
Flushing TCP Incoming Stream?

I am building a iPad app (Object C) and its pure开发者_开发问答 purpose is to receive information from a wireless device. I can connect fine and receive information but sometimes the incoming stream h[详细]

2023-04-12 07:28 分类：问答
Adding new key/value of type string to pList

I am trying to add programmatically new row to my pList file on iPhone. But I can\'t find out how. I want to add key: someKey/ type: string/ someValue: string[详细]

2023-04-12 05:52 分类：问答
Images being downloaded on my iphone app are being pixelated - iPhone SDK

Has anyone ever ran into the problem where images being downloaded are slightly pixelated. The only thing they have in common with each other is they are being resized using this function:[详细]

2023-04-12 03:44 分类：问答
how to recognize a rub gesture on UITableView?

I m working with iOS 4 and working with UIGestureRecognizer . my question is how can you create / detect a rub gesture on a table view cell . By rub gesture i mean how can i detect a right followed b[详细]

2023-04-12 03:38 分类：问答
Retrieve E-mail in In-app in iPhone

Currently my project is working perfectly on IOS development target 3.2 But as soon as i will do development target 4.0 or higher. It gives me error. Following is the error:[详细]

2023-04-12 03:30 分类：问答
didReceiveMemoryWarning on modalViewController level

I\'m building an application with UITabBarController on top level, owner of 3 viewControllers - one UIViewController and two UINavigationController.[详细]

2023-04-12 03:14 分类：问答