xunqf / nsnullcategory Goto Github PK
View Code? Open in Web Editor NEW相信不少开发者,都被NSNull坑过,最常见的是服务器返回的json里面,说好的字典、数组、数字,结果返回的是空值。 这个时候,NSJSONSerialization 会自动把他们换成 NSNull。当我们再去用dict[@“hello”]的时候,就会出触发exception,导致程序崩溃。
相信不少开发者,都被NSNull坑过,最常见的是服务器返回的json里面,说好的字典、数组、数字,结果返回的是空值。 这个时候,NSJSONSerialization 会自动把他们换成 NSNull。当我们再去用dict[@“hello”]的时候,就会出触发exception,导致程序崩溃。
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