CODEWITHSUNDEEP
iphonecocoa-touchuiimageviewframe-rate
Amit Raz
Amit Raz

Reputation: 5536

UIImageView performance

I have an iphone app that gets jpeg images through wifi at a rate I can control and displayes them using a uiimageview. it seems that the best performance i can get is about 2fps. it lookes like the uiimageview cant handle [uiimageview setimage:image] quickly.

is there a better solution other than using uiimageview that will allow me a betterframe rate?

Upvotes: 1

Views: 582

Answers (2)

VdesmedT
VdesmedT

Reputation: 9113

I understand you need JSon to pass multiple info from your service but clearly re creating your image from a json string consumes both memory and processor time. Use the Json to pass the url of the bytes instead and retrieve the bytes using another get.

I expect you to have a json like { path = "/images/funnryrabbits.jpg", anyProperty: "anyValue" }

Upvotes: 1

Dan Ray
Dan Ray

Reputation: 21893

Try using the .animationImages property of UIImageView. It takes an array of UIImages and animates them like a flipbook or an animated gif. You can make some cheap but quick animations by putting in a bunch of slides and letting UIImageView do the animation.

I don't know if you can manipulate that array as it's rendering the animation, is the thing.

Upvotes: 0

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