Objective-C 块属性与 Xcode 代码完成

使用 Objective-C 块属性与 Xcode 代码进行编程可以帮助我们更高效地处理代码逻辑和实现功能。Objective-C 块属性是指在 Objective-C 中使用的一种特殊类型的对象，可以将块作为属性进行声明和使用。在 Xcode 中，我们可以通过编写代码来定义和调用块属性，从而实现更加灵活和可读性强的代码结构。

objective-c
typedef void (^MyBlock)(NSString *message);
@interface MyClass : NSObject
@property (nonatomic, copy) MyBlock myBlock;
@end
@implementation MyClass
- (void)executeBlock {
    if (self.myBlock) {
        self.myBlock(@"Hello, Block!");
    }
}
@end

objective-c
MyClass *myObject = [[MyClass alloc] init];
[myObject setMyBlock:^(NSString *message) {
    NSLog(@"%@", message);
}];
[myObject executeBlock];

objective-c
typedef void (^CompletionBlock)(NSArray *data);
@interface DataManager : NSObject
@property (nonatomic, copy) CompletionBlock completionBlock;
- (void)fetchData;
@end
@implementation DataManager
- (void)fetchData {
    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
        // 模拟异步操作
        NSArray *data = @[ @"Apple", @"Banana", @"Orange" ];
        
        dispatch_async(dispatch_get_main_queue(), ^{
            if (self.completionBlock) {
                self.completionBlock(data);
            }
        });
    });
}
@end

objective-c
typedef void (^AnimationBlock)(void);
@interface AnimationManager : NSObject
@property (nonatomic, copy) AnimationBlock animationBlock;
- (void)startAnimation;
@end
@implementation AnimationManager
- (void)startAnimation {
    [UIView animateWithDuration:0.5 animations:^{
        if (self.animationBlock) {
            self.animationBlock();
        }
    }];
}
@end