How to create a UIView withouth blocking the UI

Question

How can I create lots of UIView & setting text on the UITextView which is the subview of UIView in Background thread.

Currently I am using a for loop to create the UIView but it is blocking the user to do anything.

Please help me to get this done. Thanks In Advance :)

Have you seen this? http://stackoverflow.com/questions/11242307/how-to-update-a-ui-label-from-a-non-ui-thread-in-ios — Mick MacCallum, Feb 12 '14 at 12:44

score 2 · Answer 1 · answered Feb 12 '14 at 12:49

UIKit is not intended to be used in background. You do not need to have lots and lots of instantiated UIViews, as they would consume a lot of resources, but as many as you can show on the screen, then just reuse them for showing the others, eg. when the users scrolls. That's the idea of the collection views and table views - use them instead or implement your own reusable mechanism.

Gago · Answer 2 · 2014-02-12T12:54:55.367

1

You have to do all your UI changes in the main thread. You can create UIView in background mode, but call addSubview: method in main thread.

( Thanks Minerva )

edited Feb 12 '14 at 12:54

answered Feb 12 '14 at 12:45

Gago

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So you are saying that i cant add a subview to UiView in background mode – DAMM108 Feb 12 '14 at 12:49
You can do it. But it can cause unexpected result. – Gago Feb 12 '14 at 12:50
No you can't, you also can't use initWithFrame: as it's not thread safe, neither adding the text field. Results are unexpected. – graver Feb 12 '14 at 12:51
Thanks @graver & Gago for the help – DAMM108 Feb 12 '14 at 13:04

How to create a UIView withouth blocking the UI

2 Answers2