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A UINavigationBar extension to show loading effects

A UINavigationBar extension to show loading effects

BusyNavigationBar

A UINavigationBar extension to show loading effects above navigation bar's background.

Screenshot

Stripes

gray_stripe.gif
blue_stripe2.gif

Bars

gray_bar.gif
green_bar.gif

Your custom layer

gray_bird.gif

Usage

BusyNavigationBar is available through CocoaPods. To install
it, simply add the following lines to your Podfile:

use_frameworks!
pod "BusyNavigationBar"

Or add the following lines to your Cartfile:

github "gmertk/BusyNavigationBar" "master"

After installation is done, you can use the new methods of your navigation bar; start(_ options: BusyNavigationBarOptions) and stop().

Properties

var options = BusyNavigationBarOptions()

/**
    Animation type

    - Stripes: Sliding stripes as seen in Periscope app.
    - Bars: Bars going up and down like a wave.
    - CustomLayer(() -> CALayer): Your layer to be inserted in navigation bar. In this case, properties other than `transparentMaskEnabled` and `alpha` will not be used. 
*/
options.animationType = .Stripes

/// Color of the shapes. Defaults to gray.
options.color = UIColor.grayColor()

/// Alpha of the animation layer. Remember that there is also an additional (constant) gradient mask over the animation layer. Defaults to 0.5.
options.alpha = 0.5

/// Width of the bar. Defaults to 20.
options.barWidth = 20

/// Gap between bars. Defaults to 30.
options.gapWidth = 30

/// Speed of the animation. 1 corresponds to 0.5 sec. Defaults to 1.
options.speed = 1

/// Flag for enabling the transparent masking layer over the animation layer.
options.transparentMaskEnabled = true


// Start animation
self.navigationController?.navigationBar.start(options)

// Stop animation
self.navigationController?.navigationBar.stop()

Author

Günay Mert Karadoğan, [email protected]

GitHub