没有已知的选择器目标c的实例方法

Question

我有一个包含以下示例数据的数组

[{"MissionId":10,"Name":"Test 10！","Description":"Describe 10","MissionStatus":1,"ExpPoint":100,"CreatedDate":"2017-08-07T09:35:17.9882136Z","UserCount":0},{"MissionId":9,"Name":"Test 9！","Description":"Describe 9","MissionStatus":1,"ExpPoint":100,"CreatedDate":"2017-08-07T09:35:12.1392938Z","UserCount":0}]

我可以在控制台中打印出描述如下： -

po [self.missionArray[0]Description]

但当我尝试使用NSlog时，它会说

No known instance method for selector 'Description'

可能出现什么问题？

Answer 1

尝试将“说明”替换为“说明”

描述是NSObject类中未定义的函数。所以你最终得到错误 - “没有已知的选择器实例方法'描述'”

description - 在NSObject中定义了选择器。所以它应该适合你。