Ios – Extra bottom space/padding on iPhone X

iosiphoneiphone-xswift

On the iPhone X in portrait mode, if you set a bottom constraint to safe area to 0, you will end up with an extra space at the bottom of the screen.
How do you get programmatically the height of this extra padding ?

I managed to manually determine the height of this padding which is 34 and here is how I managed to implement it with iPhone X detection:

Swift 4.0 and Xcode 9.0

if UIDevice().userInterfaceIdiom == .phone
{
    switch UIScreen.main.nativeBounds.height
    {
        case 2436: //iPhone X
        self.keyboardInAppOffset.constant = -34.0
        default:
        self.keyboardInAppOffset.constant = 0
    }
}

Is there a cleaner way to detect the height of this padding ?

Best Answer

In iOS 11, views have a safeAreaInsets property. If you get the bottom property of these insets you can get the height of the bottom padding while on iPhone X:

if #available(iOS 11.0, *) {
    let bottomPadding = view.safeAreaInsets.bottom
    // ...
}

(likewise for the top padding with status bar)

Related Solutions

Ios – How to develop for iPhone using a Windows development machine

It's certainly possible to develop on a Windows machine, in fact, my first application was exclusively developed on the old Dell Precision I had at the time :)

There are three routes;

Install OSx86 (aka iATKOS / Kalyway) on a second partition/disk and dual boot.
Run Mac OS X Server under VMWare (Mac OS X 10.7 (Lion) onwards, read the update below).
Use Delphi XE4 and the macincloud service. This is a commercial toolset, but the component and lib support is growing.

The first route requires modifying (or using a pre-modified) image of Leopard that can be installed on a regular PC. This is not as hard as you would think, although your success/effort ratio will depend upon how closely the hardware in your PC matches that in Mac hardware - e.g. if you're running a Core 2 Duo on an Intel Motherboard, with an NVidia graphics card you are laughing. If you're running an AMD machine or something without SSE3 it gets a little more involved.

If you purchase (or already own) a version of Leopard then this is a gray area since the Leopard EULA states you may only run it on an "Apple Labeled" machine. As many point out if you stick an Apple sticker on your PC you're probably covered.

The second option is more costly. The EULA for the workstation version of Leopard prevents it from being run under emulation and as a result, there's no support in VMWare for this. Leopard server, however, CAN be run under emulation and can be used for desktop purposes. Leopard server and VMWare are expensive, however.

If you're interested in option 1) I would suggest starting at Insanelymac and reading the OSx86 sections.

I do think you should consider whether the time you will invest is going to be worth the money you will save though. It was for me because I enjoy tinkering with this type of stuff and I started during the early iPhone betas, months before their App Store became available.

Alternatively, you could pick up a low-spec Mac Mini from eBay. You don't need much horsepower to run the SDK and you can always sell it on later if you decide to stop development or buy a better Mac.

Update: You cannot create a Mac OS X Client virtual machine for OS X 10.6 and earlier. Apple does not allow these Client OSes to be virtualized. With Mac OS X 10.7 (Lion) onwards, Apple has changed its licensing agreement in regards to virtualization. Source: VMWare KnowledgeBase

Ios – Eliminate extra separators below UITableView

Interface builder (iOS 9+)

Just drag a UIView to the table. In storyboard, it will sit at the top below your custom cells. You may prefer to name it "footer".

Here it is shown in green for clarity, you'd probably want clear color.

Note that by adjusting the height, you can affect how the "bottom bounce" of the table is handled, as you prefer. (Height zero is usually fine).

To do it programmatically:

Swift

override func viewDidLoad() {
    super.viewDidLoad()
    self.tableView.tableFooterView = UIView()
}

Objective-C

iOS 6.1+

- (void)viewDidLoad 
{
    [super viewDidLoad];

    // This will remove extra separators from tableview
    self.tableView.tableFooterView = [UIView new];
}

or if you prefer,

    self.tableView.tableFooterView = [[UIView alloc] initWithFrame:CGRectZero];

Historically in iOS:

Add to the table view controller...

- (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section {
     // This will create a "invisible" footer
     return CGFLOAT_MIN;
 }

and if necessary...

- (UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section
{        
    return [UIView new];

    // If you are not using ARC:
    // return [[UIView new] autorelease];
}