如何将选择器声明为 iOS 属性以及接下来如何使用我的属性？

发布于 2024-12-29 01:28:48 字数 445 浏览 1 评论 0原文

我接下来写。所有使用 ARC 编写的代码

@interface MPEvent : UIImageView
@property (nonatomic, unsafe_unretained) SEL action;
@property (nonatomic, strong) id target;

@end

选择器是否以正确的方式声明？

在实现中，我接下来这样使用我的属性：

- (void)sendActionToTargetFromView:(id)view {
    [target performSelector:action withObject:view];
}

但是编译器向我显示警告
警告：语义问题：PerformSelector 可能会导致泄漏，因为其选择器未知

如何修复此警告？

原文

I write next. All code wrote with ARC

@interface MPEvent : UIImageView
@property (nonatomic, unsafe_unretained) SEL action;
@property (nonatomic, strong) id target;

@end

Is selector declared in correct way?

In implementation I use my properties next this way:

- (void)sendActionToTargetFromView:(id)view {
    [target performSelector:action withObject:view];
}

But compiler show me a warning
warning: Semantic Issue: PerformSelector may cause a leak because its selector is unknown

How to fix this warning?

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熟人话多 2025-01-05 01:28:48

在下面的示例中，仅忽略一行代码 -Warc-performSelector-leaks，之后诊断返回到之前存在的任何状态。

#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Warc-performSelector-leaks"
    [self.ticketTarget performSelector: self.ticketAction withObject: self];
#pragma clang diagnostic pop

pragma 警告帮助
 详细说明

In the below example -Warc-performSelector-leaks is ignored for only a single line of code, after which the diagnostics return to whatever state had previously existed.

#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Warc-performSelector-leaks"
    [self.ticketTarget performSelector: self.ticketAction withObject: self];
#pragma clang diagnostic pop

pragma warnings help
Detailed description

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