如何在不使用 UIWebView 的情况下在 iOS 中显示动画 svg 文件

Question

Currently i am using UIWebView to display animated svg file in my native iOS application.

This works fine except the CPU usage is constantly being on higher side as long as app is in foreground.

Is there any better way to display svg file without using UIwebView

I have already tried many third party libraries but all works only with static svg file not animated svgs

I have tried following

https://github.com/mchoe/SwiftSVG

https://github.com/exyte/Macaw

https://github.com/onmyway133/Snowflake

https://github.com/SVGKit/SVGKit

My app supports iOS 9 and above, My code is in Swift3

Here is the link of on of the svg file that i am trying to display

http://www.mediafire.com/file/04ojy6t4e3c41lv/03d.svg

Answer 1

First install the pod in your podfile

pod `SVGKit`

Then import the library in your view controller file

import SVGKit

Then create SVGKImageObjectView object and add it to your view

let svgImage = SVGKFastImageView(svgkImage : SVGKImage(contentOf:Bundle.main.url(forResource: "animated", withExtension : "svg")!))
self.view.addSubview(svgImage)

To animate the SVG You can use play function

svgImage.svgKImage.play()

You can also set your frame and layout

svgImage.frame  = CGRect(x:0, y:0, width:200, height: 200)
svgImage.center = self.view.center

Answer 2

You should take look at SVGKit !

This library is based on core animation.

Refer this tutorial ,

First install pod or manually install SVGKit into your project.

Then drag and drop your svg file in to your project.

Then you can do something like,

  UIView *myView = [[UIView alloc]initWithFrame:CGRectMake(20, 70, 300, 300)];

myView.backgroundColor = [UIColor yellowColor];

[self.view addSubview:myView];

 // SVGKImage *image = [SVGKImage imageWithContentsOfFile:@"animated-svg-icon"];

SVGKImage *image = [SVGKImage imageNamed:@"cd-icon.svg"];

[self animateCALayer:image.CALayerTree duration:2.0];
[myView.layer addSublayer:image.CALayerTree];

here cd-icon.svg is the svg image. Put all the html,js and css files with it in your bundle! (put whole folder of svg in your project)

If you get any error related CocoaLumberjack then install pod 'CocoaLumberjack' in your project and replace @import CocoaLumberjack; with #import "CocoaLumberjack.h" in SVGKit-prefix.pch

Follow everything step by step as I mentioned. And you are done. You will displaying svg in UIView instead of webview .