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好的，所以我有一部分应用程序正在处理视图之间的浮点变量传递，一切都很好，但是所有的按钮看起来有点乱。并且这样我就快完成了，我想看看是否可以在现有视图中添加一个 tabBar 并清理它。我找到了一个很棒的教程，并让它链接起来并报告我在 NSLog 中选择的选项卡，所以继续粘贴我用于相同功能的按钮的代码。一切都变得有点好笑，我不得不做一些新的变量，我遇到了最后一个我无法弄清楚的错误。这是我第一次调用 patternRafter 时需要一个预期的表达式

- (void)tabBar:(UITabBar *)tabBar didSelectItem:(UITabBarItem *)item {
NSLog(@"didSelectItem: %d", item.tag);

[self activateTab:item.tag];
}

- (void)activateTab:(int)index {
switch (index) {
    case 1:

        patternRafter *patternRafter1 = [[patternRafter  alloc]initWithNibName:nil bundle:nil];

        BuildNavAppDelegate *buildNavDelegate = (BuildNavAppDelegate *)[[UIApplication sharedApplication]delegate];

        buildNavDelegate.TLPMR = [TLMR text];
        buildNavDelegate.comRaftBirdPassed = [comBird text];
        buildNavDelegate.comRaftLengthPassed = [comRafter text];
        buildNavDelegate.raftThicknessPassed = [rafterWidth text];



        [self presentModalViewController:patternRafter1 animated:YES]; 
        break;
    /*case 2:

        buildersSquare *square1 = [[buildersSquare alloc]initWithNibName:nil bundle:nil];

        BuildNavAppDelegate *buildNavDelegate = (BuildNavAppDelegate *)[[UIApplication sharedApplication]delegate];

        buildNavDelegate.TLPMR = [TLMR text];
        buildNavDelegate.comRaftBirdPassed = [comBird text];
        buildNavDelegate.comRaftLengthPassed = [comRafter text];
        buildNavDelegate.raftThicknessPassed = [rafterWidth text];



        [self presentModalViewController:square1 animated:YES];         
        break;
    case 3:

        self.tab2ViewController =[[tab2 alloc] initWithNibName:@"tab2" bundle:nil];
        [self.view insertSubview:tab2ViewController.view belowSubview:tabbar1];
        if (currentViewController != nil)
            [currentViewController.view removeFromSuperview];
        currentViewController = tab2ViewController;         
        break;*/
    default:
        break;
}

}

任何帮助，将不胜感激。谢谢，我刚刚意识到我不能发布图片，因为我还是一个新用户。所以如果有人想检查一下，这里有一个链接。 http://dl.dropbox.com/u/72193343/Screen%20shot%202012-05-18%20at%209.22.48%20AM.png

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2 回答 2

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- (void)activateTab:(int)index {
switch (index) {
case 1://igot it to work by opening brackets here{

    patternRafter *patternRafter1 = [[patternRafter  alloc]initWithNibName:nil bundle:nil];

    BuildNavAppDelegate *buildNavDelegate = (BuildNavAppDelegate *)[[UIApplication sharedApplication]delegate];

    buildNavDelegate.TLPMR = [TLMR text];
    buildNavDelegate.comRaftBirdPassed = [comBird text];
    buildNavDelegate.comRaftLengthPassed = [comRafter text];
    buildNavDelegate.raftThicknessPassed = [rafterWidth text];



    [self presentModalViewController:patternRafter1 animated:YES]; //local declaration of 'patternRafter1' hides instance variable
    break;//and closing here} 
case 2:

它工作正常，但我收到警告 - 'patternRafter1' 的本地声明隐藏实例变量

于 2012-05-19T16:05:55.397 回答
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我想patternRafter 是一个名为PatternRafter 的类的实例？如果是这样，该行需要如下所示：

PatternRafter *patternRafter1 = [[PatternRafter alloc] initWithNibName:nil bundle:nil];

Obj-C 区分大小写，命名约定要求 ivars 以小写字母开头，类以大写字母开头。

于 2012-05-18T17:40:22.653 回答