Set overlay when dropdown appears on screen

Question

I have a drop down button and when user clicks on it dropdown appears which is a tableview that is hidden.

- (IBAction)showDropDown:(id)sender {
    self.tableView.hidden = NO;
}

Now i want to set entire screen overlay to 66% just like a blurry screen only excluding button and tableView. They must be visible clearly. And when user made as selection...

-(void)tableView:(UITableView *)tableView didDeselectRowAtIndexPath:(NSIndexPath *)indexPath{
    self.tableView.hidden = YES;
}

And everything will be same again.

score 0 · Answer 1 · edited May 23 '17 at 12:08

0

Okay so look here to learn how to make a blurring view

Creating a blurring overlay view

Now now a blurred View with the entire screen as the frame.

instead of addsubView to make it appear, use

[self.View insertSubview:blurredView belowSubView:yourTable];

Hope this is helpful..:)

edited May 23 '17 at 12:08

Community

1
1

answered Jun 17 '16 at 14:13

Mohamad Bachir Sidani

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I wnat to show button too which is just above tableView – naomi Jun 17 '16 at 14:46
If it is above it eill appear correct since the blur is behind the tableview and the button is above it – Mohamad Bachir Sidani Jun 17 '16 at 19:37

score 0 · Answer 2 · answered Jun 17 '16 at 14:34

To insert overlay view as subview you have to use use UITableViewController instead of UIViewController
You can insert the overlay below the your table

view.insertSubview(view: overlayView, belowSubview: tableView)

But this will not overlay the entire screen (navigation bar and status bar is still visible)

To solve this, you have to create a new window

let window = UIWindow(frame: UIScreen.mainScreen().bounds)

window.addSubview(yourTableView)

// This will make window above the status bar
window.windowLevel = UIWindowLevelAlert

// Set to overlay color
window.backgroundColor = UIColor(white: 0, alpha: 0.66)

// Display the window that contains the table view
window.makeKeyAndVisible()

Set overlay when dropdown appears on screen

2 Answers2