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是否有任何理由将 UIPicker 添加到视图可能会以某种方式剥夺以编程方式创建的按钮的功能?我最初实例化了一个 UIButton 以将我带到不同的视图,一切都很好。然后我继续在同一个视图中添加了一个 UIPicker,目的是选择几个关键字段,然后可以将这些字段传递到 UIButton 导致的视图。不幸的是,我似乎在添加选择器的过程中以某种方式破坏了我的按钮。

这是按钮的实例化:

switchToGame = [UIButton buttonWithType:UIButtonTypeRoundedRect];
switchToGame.frame = CGRectMake(140,250,100,100);
[switchToGame setTitle:@"Play God" forState:UIControlStateNormal];
[switchToGame setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[switchToGame addTarget:self action:@selector(playGame) forControlEvents:UIControlEventTouchUpInside];
[self.view insertSubview:switchToGame atIndex:0];

playGame 方法检查选择器的字段,将它们发送到共享单例对象,然后加载游戏视图,如下所示:

Singleton *mySingleton = [Singleton sharedSingleton];

NSInteger numCellsRow = [theDataPicker selectedRowInComponent:0];
NSInteger aliveColorRow = [theDataPicker selectedRowInComponent:1];
NSInteger deadColorRow = [theDataPicker selectedRowInComponent:2];

UIColor * theAliveColor = [aliveColors objectAtIndex:aliveColorRow];
UIColor * theDeadColor = [deadColors objectAtIndex:deadColorRow];
NSInteger numCellsPerRow = [[cellRowOptions objectAtIndex:numCellsRow] intValue];

mySingleton.cellsPerRow = numCellsPerRow;
mySingleton.aliveColor = theAliveColor;
mySingleton.deadColor = theDeadColor;

[theAliveColor release];
[theDeadColor release];

GameController * viewController = [GameController alloc];
self.theViewController = viewController;
[self.view insertSubview:theViewController.view atIndex:1];
[viewController release];

我希望这些代码段足以让有人指出我误入歧途的地方,因为我现在很迷茫。

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1 回答 1

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出于好奇,如果您更换会发生什么:

[self.view insertSubview:switchToGame atIndex:0];

[self.view insertSubview:switchToGame atIndex:1];

[self.view insertSubview:theViewController.view atIndex:1];  

[self.view insertSubview:theViewController.view atIndex:0];

希望这可以正确排序您的视图,以便按钮位于顶部。还可以在这里查看关于 addSubview 与 insertSubview 的精彩链接:

UIView 类中 addSubview 和 insertSubview 的区别

于 2012-06-13T18:21:09.290 回答