ios - 在运行时获取主 Storyboard

Question

我希望能够在运行时简单地调用 [UIStoryboard mainStoryboard] 来获取 iPad 或 iPhone Storyboard。

Answer 1

这是一个 UIStoryboard 类别，它会做这个:

UIStoryboard+LDMain.h

#import <UIKit/UIKit.h>

@interface UIStoryboard (LDMain)

+ (instancetype)LDMainStoryboard;

@end

UIStoryboard+LDMain.m

#import "UIStoryboard+LDMain.h"

UIStoryboard *_mainStoryboard = nil;

@implementation UIStoryboard (LDMain)

+ (instancetype)LDMainStoryboard {
    if (!_mainStoryboard) {
        NSBundle *bundle = [NSBundle mainBundle];
        NSString *storyboardName = [bundle objectForInfoDictionaryKey:@"UIMainStoryboardFile"];
        _mainStoryboard = [UIStoryboard storyboardWithName:storyboardName bundle:bundle];
    }
    return _mainStoryboard;
}

@end

这是一个 link to the gist