Objective-C块：不兼容的块指针类型

Question

我正在尝试实现一个块调用。这是我的方法：

- (void) runTest; {
    void (^MyBlock)(id, NSUInteger, BOOL) = ^(id obj, NSUInteger idx, BOOL stop) {
        NSLog(@"Video game %@", (NSString *)obj);
    };

    BOOL stop;
    MyBlock(@"Path of exile", 0, &stop);

    NSArray *videoGames = @[@"fallout", @"Deus ex",@"final fintasy"];

    [videoGames enumerateObjectsUsingBlock:MyBlock];
}

但是在这一行：

[videoGames enumerateObjectsUsingBlock:MyBlock];

我遇到此错误：

Incompatible block pointer types sending 'void (^__strong)(__strong id, NSUInteger, BOOL)' to parameter of type 'void (^ _Nonnull)(id _Nonnull __strong, NSUInteger, BOOL * _Nonnull)'

你们都知道我在做什么错，或者我该如何解决？

非常感谢您的帮助。

Answer 1

指针。

因此，请添加*，如下所示

     void (^MyBlock)(id, NSUInteger, BOOL*) = ^(id obj, NSUInteger idx, BOOL *stop) {
         NSLog(@"Video game %@", (NSString *)obj);
     };

https://developer.apple.com/documentation/foundation/nsarray/1415846-enumerateobjectsusingblock?language=objc

（（void）enumerateObjectsUsingBlock：（void（^）（ObjectType obj，NSUInteger idx，BOOL * stop））block;

Answer 2

- (void) runTest; {
    void (^MyBlock)(id, NSUInteger, BOOL *) = ^(id obj, NSUInteger idx, BOOL *stop) {
        NSLog(@"Video game %@", (NSString *)obj);
    };

    BOOL stop;
    MyBlock(@"Path of exile", 0, &stop);

    NSArray *videoGames = @[@"fallout", @"Deus ex",@"final fintasy"];
   [videoGames enumerateObjectsUsingBlock:MyBlock];
}