A UINavigationBar extension to show loading effects above navigation bar's background.
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().
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()Günay Mert Karadoğan, mertkaradogan@gmail.com
BusyNavigationBar is available under the MIT license. See the LICENSE file for more info.
There is a nice tutorial about Periscope's pull-to-refresh control by @bitwaker.