小编cjw*_*rth的帖子

在我的项目中,我有Objective-C和Swift代码.我有一些对象具有包含块的属性来清理一些UITableView配置.使用它在Objective-C中工作,但在使用Swift时崩溃.

我已经将问题减少到尽可能小,同时仍然可以重现.

// in Objective-C
@interface MyClass : NSObject
@property (copy, nonatomic) NSString* (^block)();
- (NSString *)callTheBlock;
@end

@implementation MyClass
- (NSString *)callTheBlock {
    if (self.block) {
        return self.block();
    } else {
        return @"There is no spoon";
    }
}
@end

// In Swift
// I actually have this in my AppDelegate to run when the app starts, but that shouldn't matter

class AppDelegate: UIResponder, UIApplicationDelegate {
    var myClass: MyClass?

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: NSDictionary?) -> Bool {
    self.myClass = …