Question

我有这个游戏应用程序cocos2d我下载它是一个开源游戏...

我正在尝试使用gamecenter插入一个在线排行榜。然而

我插入的图像似乎正在崩溃游戏。

我已将其插入此处：

    MenuItem *button1 = [MenuItemImage itemFromNormalImage:@"playAgainButton.png" selectedImage:@"playAgainButton.png" target:self selector:@selector(button1Callback:)];
    MenuItem *button2 = [MenuItemImage itemFromNormalImage:@"changePlayerButton.png" selectedImage:@"changePlayerButton.png" target:self selector:@selector(button2Callback:)];
    MenuItem *button3 = [MenuItemImage itemFromNormalImage:@"blank1.png" selectedImage:@"blank1.png" target:self selector:@selector(button3Callback:)];

    Menu *menu = [Menu menuWithItems: button1, button2, button3, nil];

    [menu alignItemsVerticallyWithPadding:9];
    menu.position = ccp(160,48);

    [self addChild:menu];

    return self;
}

MenuItem *button3 = [MenuItemImage itemFromNormalImage:@"blank1.png" selectedImage:@"blank1.png" target:self selector:@selector(button3Callback:)];

那就是那个我编辑了button3callback，如下所示：

-(void)button3Callback:(id)sender
{
    GKLeaderboard *leaderboardRequest = [[GKLeaderboard alloc] init];
    if (leaderboardRequest != nil)
    {
        NSLog(@"leaderboardrequest is not equal nil");
        leaderboardRequest.playerScope = GKLeaderboardPlayerScopeGlobal;
        leaderboardRequest.timeScope = GKLeaderboardTimeScopeAllTime;
        leaderboardRequest.range = NSMakeRange(1,10);
        [leaderboardRequest loadScoresWithCompletionHandler: ^(NSArray *scores, NSError *error) {
            if (error != nil)
            {
                // handle the error.
                NSLog(@"ERROR : %@",[error localizedDescription]);
            }
            if (scores != nil)
            {
                // process the score information.

                for (id thisScore in scores) {
                    NSLog(@"Score %@  ", thisScore);
                }
            }
            else {
                NSLog(@"Scores == nil");
            }
        }];
    }
}

现在我遇到了这个错误：

2011-12-20 11:29:40.984 tweejump[2936:707] Image is Null
2011-12-20 11:29:40.988 tweejump[2936:707] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFDictionary setObject:forKey:]: attempt to insert nil value (key: blank1.png)'
*** First throw call stack:
(0x31cca8bf 0x31a3a1e5 0x31cca7b9 0x31cca7db 0x31c376bb 0x35dc9 0x2f63f 0x2f5c5 0x25385 0x252f9 0x2522f 0x43cc7 0x429bb 0x4235f 0x2e95f 0x2f515 0xf26f 0x358db61d 0x31c9ea63 0x31c9e6c9 0x31c9d29f 0x31c204dd 0x31c203a5 0x31d2cfed 0x327b0743 0x2873 0x282c)

我确保图像在适当的位置......我不知道为什么它是零？

我已尝试使用SIM卡和真实设备，我也有同样的错误。

我还应该做什么？

Answer 1

找到答案

我插入的图像不是真正的png文件......

这就是为什么它说图像为空因为找不到真正的png文件

我用真正的png图像替换它，现在效果很好..

感谢所有回复的人：）

Image为null [NSCFDictionary setObject：forKey：]：尝试插入nil值（键:)

1 个答案: