how iPhone 5 apps will work on older iPhones?

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How to develop or migrate apps for iPhone 5 screen resolution?

For example, if I create an app to take advantage of the 4 inch screen will I also have to create another version of my app to support the older 3.5 inch screen?

PS

Im doing it programmatically.

http://stackoverflow.com/questions/12395200/how-to-develop-or-migrate-apps-for-iphone-5-screen-resolution — Nimit Parekh, Oct 18 '12 at 12:50
You can use: #define IS_IPHONE_5 ( fabs( ( double )[ [ UIScreen mainScreen ] bounds ].size.height - ( double )568 ) < DBL_EPSILON ) then use a simple `if` statement : if (IS_IPHONE_5) { // What ever changes } — Mutawe, Apr 29 '13 at 10:05

score 2 · Accepted Answer · edited May 23 '17 at 12:18

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If you enable Autolayout in the interface builder, it will support both screen sizes for the iPhone. If doing it programmatically, there's this question that asked something similar. Implementing auto layout for views generated programmatically

edited May 23 '17 at 12:18

Community

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answered Oct 18 '12 at 12:36

CBredlow

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Follow Simon's advice in the documentation it handles programmatically – CBredlow Oct 18 '12 at 12:38

score 2 · Answer 2 · answered Oct 18 '12 at 12:37

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Apple added something called AutoLayout. They added this to iOS (and OSX) SDKs to counter the screen resolution differences by allowing you to set constraints to your view elements.

Here's the documentation

To use it programmatically, you can define constraints using NSLayoutConstraint

answered Oct 18 '12 at 12:37

Simon Germain

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do you know a good example for : NSLayoutConstraint – Mutawe Oct 18 '12 at 12:39
Good question. Most of the tutorials I found deal with Interface Builder. – Simon Germain Oct 18 '12 at 12:41
See @CBredlow link on his edited response. That's how you use it programmatically. – Simon Germain Oct 18 '12 at 12:42

score 1 · Answer 3 · answered Oct 18 '12 at 12:40

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Try to use Auto Layout concept, It will work,

http://www.raywenderlich.com/20881/beginning-auto-layout-part-1-of-2

http://www.raywenderlich.com/20897/beginning-auto-layout-part-2-of-2

answered Oct 18 '12 at 12:40

Anand

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how iPhone 5 apps will work on older iPhones?

3 Answers3