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Questions tagged [ios4]

The 2010-2011 version of the iPhone/iPad/iPod Touch/Apple TV operating system family, made by Apple.

iOS 4 was made available to the public for the iPhone and iPod Touch on June 21, 2010. It has been succeeded by which was released on October 12, 2011. The latest version of iOS 4 is 4.3.5.

This is the first major iOS release to drop support for some devices. It is also the first major iOS release that iPod Touch users do not have to pay for.

Support

The iPhone 3G and iPod Touch 2nd generation have limited features, while the iPhone 4, iPhone 3GS, iPod Touch 3rd & 4th generation have all features enabled. The iPhone and iPod Touch 1st generation cannot run iOS 4.0 and above. iPad compatibility was added with the release of iOS 4.2.1 on November 22, 2010.

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10676 questions
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CGImageRef to UIImage rotates my photos debugging on a iOS 4 in simulator or device

I have a problem with some simple code. The photo's, either picked or taken with the camera, are rotated. At first I thought it was a setting in the UIView but it happens when I copy the passed in UIImage to another UIImage using CGImageRef. I…
Diziet
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What's the Best Way to Support the Multiple Art Sizes Currently Used by iOS?

Currently iOS supports three different art sizes: art for the 480x320 original iPhone screen, art for the hi-res 960x640 iPhone 4 screen, and art for the 1024x768 iPad screen, which in my experience is usually not the same as for the hi-res screen…
Shannon A.
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How do I use AVCaptureFlashMode

I'm making an app to allow me to stitch images together into a panoramic scene. I want to be able to turn the Flash LED on the iPhone 4 programatically. How can I do this? I read the documentation and discovered that I need to use…
Cocoa Dev
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How does iBooks do this?

I am currently displaying text in a uiwebview. However, I would like to allow a user to select text and perform some action with the selected text (google it). Apple has done this sort of thing with iBooks. When you click on a word you can choose to…
Yolanda
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Can Blocks built for the iPhone 4 SDK work when deployed to iPhone OS 3.0?

The latest Xcode IDE requires you to target iPhone SDK 4 while dynamically handling deprecated and new functionality if you set the application to deploy to earlier releases. So can I use new features like Blocks and still have it work on a device…
Brennan
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Multitasking aware applications in iOS 4 and Custom URL Schemes

I'm trying to implement OAuth securely as detailed here: http://fireeagle.yahoo.net/developer/documentation/oauth_best_practice#custom-url-osx. I seem to have hit a stumbling block, as I am unable to figure out how to handle a url which launches my…
ace
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iPhone Custom Fonts with Font Suitcase

I am attempting to use a Font Suitcase for a custom font in an iOS4 app but am not having any success. I have read other posts that have documented how to use custom fonts, so have copied the suitcase into my project, added it to resources and the…
Steve Reed Sr
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What does the "Power Logging" setting in iOS4 do

I noticed a new setting screeen on the iPhone since iOS4: Settings -> Developer (just below iPod, Photos, Store) -> Power -> Logging. Does anyone know what this does? I could not find anything about it in the documentation or on the net.
henning77
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Is there a way to dim the LED light on the iPhone 4?

Is there a method or property that allows you to set the brightness of the LED light on the iPhone 4?
marty
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Quit app when pressing home

I my testing, when I exit (by pressing the home button) my app, it still is "running" in the background, thanks to the multitasking feature. However, I would like it to quit when the home button is pressed. Is this only happening to me? Anyway, I…
pop850
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Illegally mutated the NSFetchedResultsController's fetch request

I'm getting the following exception is thrown under iOS 4.0 but not under 3.0 using core data. I'm populating a tableview controller with data from a core data store. Then drilling down on a row and requesting the details for that row and passing…
yesimarobot
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How does iOS solve memory fragmentation?

I couldn't find any documentation about memory management of iOS. Especially about memory fragmentation. If you know any document about this, please let me know.
eonil
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Design a UIView as the tableview cell with separate xib file

I need to design a UIView as the tableview cell with separate xib file. I also tried it with creating a separate xib and design its view matches to tableview cell type. But it is failed, there is any programming guide to create a custom, reusable,…
Arunkumar
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Event alarms not created correctly in EventKit with iOS4.3 / calendars synced to Google Calendar

I have a seemingly straightforward, textbook case of using EventKit to create events with alarms. Frustratingly, it doesn't work. Here's what I'm doing: Create an EKEvent with [EKEvent eventWithEventStore:] and fill out a bunch of its…
Eugene Osovetsky
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How to include FFMpeg library in iphone project

I am using iFrameExtractor to extract the frames. But when I clone the project I found that few files from ffmpeg framework was missing. I tried hard to include the missing file, but was not able to do that.. Can anyone sort out this issue or give…
Parvez Belim
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