使用xCode 5，在项目>General上选择“迁移到资产目录”。

然后使用“Show in finder”找到你的启动图像，你可以模拟编辑它为640x1136，然后拖到资产目录，如下图所示。

确保iOS7和iOS6 R4部分都有一个640x1136的图像。下次你启动应用程序时，黑条将消失，你的应用程序将使用4英寸的屏幕

在横屏模式下，使用568检查边界将失败。iPhone 5只在纵向模式下启动，但如果你想支持旋转，那么iPhone 5的“check”也需要处理这种情况。

这是一个宏，它处理方向状态:

#define IS_IPHONE_5 (CGSizeEqualToSize([[UIScreen mainScreen] preferredMode].size, CGSizeMake(640, 1136)))

'preferredMode'调用的使用来自我几个小时前读的另一篇文章，所以我没有想到这个想法。

使用xCode 5，在项目>General上选择“迁移到资产目录”。

然后使用“Show in finder”找到你的启动图像，你可以模拟编辑它为640x1136，然后拖到资产目录，如下图所示。

确保iOS7和iOS6 R4部分都有一个640x1136的图像。下次你启动应用程序时，黑条将消失，你的应用程序将使用4英寸的屏幕

Download and install latest version of Xcode. Set a Launch Screen File for your app (in the general tab of your target settings). This is how you get to use the full size of any screen, including iPad split view sizes in iOS 9. Test your app, and hopefully do nothing else, since everything should work magically if you had set auto resizing masks properly, or used Auto Layout. If you didn't, adjust your view layouts, preferably with Auto Layout. If there is something you have to do for the larger screens specifically, then it looks like you have to check height of [[UIScreen mainScreen] bounds] as there seems to be no specific API for that. As of iOS 8 there are also size classes that abstract screen sizes into regular or compact vertically and horizontally and are recommended way to adapt your UI.

我想，它不是在所有情况下都能工作，但在我的特定项目中，它避免了我对nib文件的重复:

在common.h中，你可以根据屏幕高度来做这些定义:

#define HEIGHT_IPHONE_5 568
#define IS_IPHONE   ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone)
#define IS_IPHONE_5 ([[UIScreen mainScreen] bounds ].size.height == HEIGHT_IPHONE_5)

在你的基本控制器中:

- (void)viewDidLoad
{
    [super viewDidLoad];
    if (IS_IPHONE_5) {
        CGRect r = self.view.frame;
        r.size.height = HEIGHT_IPHONE_5 - 20;
        self.view.frame = r;
    }
    // now the view is stretched properly and not pushed to the bottom
    // it is pushed to the top instead...

    // other code goes here...
}

According to me the best way of dealing with such problems and avoiding couple of condition required for checking the the height of device, is using the relative frame for views or any UI element which you are adding to you view for example: if you are adding some UI element which you want should at the bottom of view or just above tab bar then you should take the y origin with respect to your view's height or with respect to tab bar (if present) and we have auto resizing property as well. I hope this will work for you