How to add NSTextField over SKScene? - objective-c

Question

I am creating a game using Sprite Kit, want to add a text field over scene. Here is the code:
#interface MKMainMenuScene ()
//...
#property (nonatomic) NSTextField *field;
#end
#implementation MKMainMenuScene
- (void)didMoveToView:(SKView *)view
{
[super didMoveToView:view];
[self.view addSubview:_field];
}
- (id)initWithSize:(CGSize)size
{
if (self == [super initWithSize:size])
{
//...
_field = [[NSTextField alloc] initWithFrame:
NSMakeRect(self.frame.size.width / 2, self.frame.size.height / 2 + 20,
100, 40)];
[_field setBackgroundColor:[NSColor whiteColor]];
[_field setStringValue:#"Enter smth"];
}
return self;
}
But text field doesn't appear, it is under the scene. Does someone know what is the problem and how to solve it?

Answer 1

Got it working.
Must set necessary views as Layer-Backed Views. Tried doing this in the Nib, didn't work for me. So I did it in code.
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
{
/* Insert Label. FOR TESTING, may remove */
NSTextField *label = [[NSTextField alloc] initWithFrame:NSMakeRect(50, 50, 300, 300)];
[label setStringValue:#"Hello All"];
[label setTextColor:[NSColor whiteColor]];
[label setBackgroundColor:[NSColor redColor]];
[label setFont:[NSFont fontWithName:#"Helvetica" size:20]];
[[self.window contentView] addSubview:label];
/* SET LAYER BACK VIEW
* This is the one line code to make it work.
*/
[self.window.contentView setWantsLayer:YES];
}
UPDATE:
The above code will cause a freeze or a problem on either a SCNView or SKView. To fix this, don't set the UI as a subview, but as a sibling to SKView. And then set the UI as Layer-Backed by setWantsLayer.
Window
-> Content NSView
-> SKView/SCNView
-> NSTextField <-- Layer-Backed
Code:
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
{
/* Insert Label. FOR TESTING, may remove */
NSTextField *label = [[NSTextField alloc] initWithFrame:NSMakeRect(50, 50, 300, 300)];
// . . . .
[[self.window contentView] addSubview:label];
/* UPDATE */
[label setWantsLayer:YES];
}
Hope this helps someone else who's following my steps.

Answer 2

Try this one:
- (void)didMoveToView:(SKView *)view
{
[super didMoveToView:view];
[view addSubview:_field];
}