xcode storybaord符合3inch 與4inch iphone

使用不同storyboard for 3inch 4inch設置，

可以參考這篇


主要是在 (Appdelegate.m)

@implementation Appdelegate的上方加入

>
#define SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:(v) options:NSNumericSearch] != NSOrderedAscending)


再到此內
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{

}

加入

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
  // 1
  UIStoryboard *mainStoryboard = nil;
  if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"6.0")) {
    mainStoryboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
  } else {
    mainStoryboard = [UIStoryboard storyboardWithName:@"MainStoryboard-legacy" bundle:nil];
  }
 
  // 2
  self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
  self.window.rootViewController = [mainStoryboard instantiateInitialViewController];
  [self.window makeKeyAndVisible];
 
  return YES;
}

當然這之前你先在storyboard.storyboard點選，選擇上方的file -> Duplicate