我已实施了UIImage 分类... 我正试图从我的查看控制器调用一种方法...
"https://i.sstatic.net/5mehy.png" alt="警告屏幕"/>
谁能回答我为什么得到这个警告 以及如何避免
我已实施了UIImage 分类... 我正试图从我的查看控制器调用一种方法...
"https://i.sstatic.net/5mehy.png" alt="警告屏幕"/>
谁能回答我为什么得到这个警告 以及如何避免
看来编译器不知道是否需要释放选择器返回的值。 所以我猜你启用了 ARC, 或者编译器正在检查这个, 作为静态分析的一部分 。
选择器可以返回 +1 保留的对象, 或者自动释放的对象。 无法在编译时知道这一点, 所以编译者会向您发出此警告 。
通常您不应该从这样的选择器中获取对象。 更好的解决办法是使用强烈键入的代表界面, 使内存语义更加清晰 。
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