iOS Question Leaderboard playerScope

natesobol

Member
Licensed User
Hi, I have another question to do with gamecenter,

I am trying to have it so when the player clicks to open the leaderboard, they're brought to the "global" leaderboard instead of "friends".

After doing some investigation, I found out that apple allows you to do this through playerScope.

GKLeaderboard.PlayerScope | Apple Developer Documentation

Specifies the type of players for filtering data.
developer.apple.com

playerScope | Apple Developer Documentation

A filter that restricts the search to a subset of the players in Game Center.
developer.apple.com

When I set the playerScope field, it returns the correct value, in this following instance 1... But it wont correlate to the interface and will still display "friends" as the default.

My question is what am I doing wrong?

Pull up leaderboard with GKGameCenterViewController: 
    Dim gc As NativeObject
    gc = gc.Initialize("GKGameCenterViewController").RunMethod("new", Null)
    gc.SetField("leaderboardCategory", BoardId)
    gc.SetField("viewState", viewState)
    
    Dim ac As NativeObject
    ac = ac.Initialize("GKLeaderboard").RunMethod("new", Null)
    ac.SetField("playerScope", 1)
    Log(ac.GetField("playerScope"))

Thanks for any and all help
 
Sort by date Sort by votes

natesobol

Member
Licensed User
Erel here's what I have to bring up the leaderboard

Leaderboard Code: 
Sub ShowLeaderboard(Page As Page, BoardId As String, viewState As Int)
    Dim gc As NativeObject
    gc = gc.Initialize("GKGameCenterViewController").RunMethod("new", Null)
    gc.SetField("leaderboardCategory", BoardId)
    gc.SetField("viewState", viewState)
    
    Dim ac As NativeObject
    ac = ac.Initialize("GKLeaderboard").RunMethod("new", Null)
    ac.SetField("playerScope", 1)
    Log(ac.GetField("playerScope"))
    
    Dim del As NativeObject
    del = del.Initialize("B4IGameCenterViewControllerDelegate").RunMethod("new", Null)
    gc.SetField("gameCenterDelegate", del)
    
    Dim native As NativeObject = Page
    native.RunMethod("presentViewController:animated:completion:", Array(gc, True, Null))
End Sub

#if OBJC
@end
@interface B4IGameCenterViewControllerDelegate :NSObject<GKGameCenterControllerDelegate>
@end
@implementation B4IGameCenterViewControllerDelegate
- (void)gameCenterViewControllerDidFinish:(GKGameCenterViewController *)gameCenterViewController {
   [gameCenterViewController dismissViewControllerAnimated:YES completion:nil];
}
#End If
 
Upvote 0

Erel

B4X founder
Staff member
Licensed User
Longtime User
'ac' object isn't used. It doesn't do anything.

It should be something like:
B4X: 
Dim LeaderboardId As String = "..."
Dim PlayerScore As Int = 0 '0 = global, 1 = friends only.
Dim TimeScope As Int = 0 '0 = Today, 1 = Week, 2 = AllTime
 Dim gc As NativeObject
gc = gc.Initialize("GKGameCenterViewController").RunMethod("alloc", Null)
gc.RunMethod("initWithLeaderboardID:playerScope:timeScope:", Array(LeaderboardId , PlayerScope, TimeScope))

 Dim del As NativeObject
    del = del.Initialize("B4IGameCenterViewControllerDelegate").RunMethod("new", Null)
    gc.SetField("gameCenterDelegate", del)
    
    Dim native As NativeObject = Page
    native.RunMethod("presentViewController:animated:completion:", Array(gc, True, Null))
End Sub
 
Upvote 0

natesobol

Member
Licensed User
Many thanks Erel, it worked.

I had tried to do something similar, but was bit confused when it came to initializing and the parameters.

This clears a lot of that up.
 
Upvote 0
You must log in or register to reply here.
Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…