ios - How to update item inside an embedded array without adding a new item in Parse

Question

For example, I have arrays embedded inside array [["A", 4], ["B", 5]], and I would like to update the element inside the first embedded array so that the final outcome because [["A", 5], ["B", 5]], and not [["A", 4], ["B", 5], ["A", 5]].

Answer 1

在替换数组的值之前，请确保您有NSMutableArray (mutable)？否则你会得到错误：

是的，NSMutableArray然后我遵循了我的建议：（这里我给出简单的基本逻辑）

要替换特定索引处的任何值NSMutableArray，请使用replaceObjectAtIndex:withObject:。

例如

[MyArrayName replaceObjectAtIndex:0 withObject:MyValues];

应用这个逻辑：