IOS customized activity indicator with Swift

Default activity indicator

• Following function will add default activity indicator to a view.

func showActivityIndicatory(uiView: UIView) {
    var actInd: UIActivityIndicatorView = UIActivityIndicatorView()
    actInd.frame = CGRectMake(0.0, 0.0, 40.0, 40.0);
    actInd.center = uiView.center
    actInd.hidesWhenStopped = true
    actInd.activityIndicatorViewStyle =
                    UIActivityIndicatorViewStyle.WhiteLarge
    uiView.addSubview(actInd)
    activityIndicator.startAnimating()
}

• Output will be looks like below

Customized activity indicator

• Following function add customized activity indicator to a view

func showActivityIndicatory(uiView: UIView) {
    var container: UIView = UIView()
    container.frame = uiView.frame
    container.center = uiView.center
    container.backgroundColor = UIColorFromHex(0xffffff, alpha: 0.3)

    var loadingView: UIView = UIView()
    loadingView.frame = CGRectMake(0, 0, 80, 80)
    loadingView.center = uiView.center
    loadingView.backgroundColor = UIColorFromHex(0x444444, alpha: 0.7)
    loadingView.clipsToBounds = true
    loadingView.layer.cornerRadius = 10

    var actInd: UIActivityIndicatorView = UIActivityIndicatorView()
    actInd.frame = CGRectMake(0.0, 0.0, 40.0, 40.0);
    actInd.activityIndicatorViewStyle =
                UIActivityIndicatorViewStyle.WhiteLarge
    actInd.center = CGPointMake(loadingView.frame.size.width / 2,
                loadingView.frame.size.height / 2);
    loadingView.addSubview(actInd)
    container.addSubview(loadingView)
    uiView.addSubview(container)
    actInd.startAnimating()
}

• In this function I have added partially transparent overlay to view and display activity indicator in rounded rectangle

• Following is the output

• Complete source code

https://github.com/erangaeb/dev-notes/blob/master/swift/ViewControllerUtils.swift