Initializing 'Object' *__strong' with an expression of incompatible type 'id <Object> _Nullable
2017-05-15 16:17
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问题：
出现Initializing ‘Object’ *__strong’ with an expression of incompatible type ‘id _Nullable 的警告
解决办法:
例1：
使用ARC时，获取全局的AppDelegate会有上面的警告。
修改前：
修改后：即（强制转换）
例2：
修改前：
修改后：即（强制转换）
出现Initializing ‘Object’ *__strong’ with an expression of incompatible type ‘id _Nullable 的警告
解决办法:
例1：
使用ARC时，获取全局的AppDelegate会有上面的警告。
修改前：
AppDelegate *app = [UIApplication sharedApplication].delegate;
修改后：即（强制转换）
AppDelegate *app = (AppDelegate*)[UIApplication sharedApplication].delegate;
例2：
修改前：
NIMNotificationObject *object = lastMessage.messageObject;
修改后：即（强制转换）
NIMNotificationObject *object = (NIMNotificationObject *)lastMessage.messageObject;
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