How do I make a semi-transparent view layer above a current view?
ios, objective-c, uikit
Solution
// get your window screen size
CGRect screenRect = [[UIScreen mainScreen] bounds];
//create a new view with the same size
UIView* coverView = [[UIView alloc] initWithFrame:screenRect];
// change the background color to black and the opacity to 0.6
coverView.backgroundColor = [[UIColor blackColor] colorWithAlphaComponent:0.6];
// add this new view to your main view
[self.view addSubview:coverView];
when you are done with it , you can remove it :
[coverView removeFromSuperview];
Swift3 version:
// get your window screen size
let screenRect = UIScreen.main.bounds
//create a new view with the same size
let coverView = UIView(frame: screenRect)
// change the background color to black and the opacity to 0.6
coverView.backgroundColor = UIColor.black.withAlphaComponent(0.6)
// add this new view to your main view
self.view.addSubview(coverView)
to remove it:
coverView.removeFromSuperview()
Problem
You've likely seen this before, its become exceedingly popular in consumery chic apps like ScoutMob. I'm trying to implement a 60% transparent view on launch that will cover my home screen, explaining how to use the functions of the home screen and disappears on tap. I have my entire app completed (it's using .xib's since its from a years ago, but feel free to explain in storyboard format as well, since I will likely reuse this feature in other iOs 5.0+ applications.) I have no problem making single views, but temporarily layering one on top of another is something I haven't figured out intuitively. I'll continue researching and include any helpful tips I find in case other people are trying to do the same thing.