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iOS 7 beta 3 launches: new features, tweaks and updates

David Price | July 11, 2013
Apple launched the third beta edition of its iOS 7 mobile operating system to app developers yesterday. Here's the pick of the iOS 7 beta 3 features and updates.

Blurred layers are not available on iPhone 4.

Parallax is not available on iPhone 4.

Letterpress text is not available on iPhone 4.

Fixed in Seed 3

When a device without a passcode is connected to an untrusted computer, iTunes will tell the user to approve on the phone, yet the phone never asks the user to approve. The phone is trusted anyway, so there is no functional impact, but the UI is missing.

UISwitchonTintColors is always green irrespective of what it's set to.

Known Issues

IB support for -topLayoutGuide and -bottomLayoutGuide is not functional in this seed.

UIPickerView with custom views doesn't show the views in the selection indicator.

UIRefreshControl and the associated table view are hidden under the navigation bar when setTranslucent: is NO.

UIButtonTypeInfoLight, UIButtonTypeInfoDark, and UIButtonTypeDetailDisclosure buttons all look the same.

The UIImagePickerController does not show a live preview when using custom overlays.

The title of the UIRefreshControl appears below the navigation bar.

VoiceOver

Fixed in Seed 3

Reminders does not work with VoiceOver.

Weather

Notes

Weather conditions are not animated on iPhone 4.

WebKit

Notes

Previously, when the viewport parameters were modified, the old parameters were never discarded. This caused the viewport parameters to be additive.For example, if you started with width=device-width and then changed it to initial-scale=1.0, you ended up with a computed viewport of width=device-width, initial-scale=1.0.

In iOS 7, this has been addressed. Now you end up with with a computed viewport of initial-scale=1.0.

Previously, when using <meta name="viewport" content="initial-scale=1.0, user-scalable=1>, the scale could be incorrect after rotation.Now, if a user has not scaled the page explicitly, the page is restored to its initial scale. Also, the current scale is now correctly restricted within the min-scale, max-scale bounds.

Some images for Retina display devices appear at twice the size that they should instead of being scaled down 50%. This issue can also occur with any image to be scaled that is larger than its container and that uses either the background-size property or the -webkit-background-size property. This issue affects both native apps that display web content and web pages viewed in Safari for iPhone.The background CSS shorthand property now resets the value of the background-size property to auto when background size is not specified. This new behavior is per the CSS spec, and the old behavior is available only for apps linked to an SDK prior to iOS 7.0 when running on iOS 7 or later.

Workaround: Specify the background-size property or the -webkit-background-size property after the background shorthand property in the CSS stylesheet for the web content being displayed.

 

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