指向类型为“ id”的表达式的整数转换“ int”的指针不兼容

Question

In my app I am retrieving data from a MySQL database using JSON.

One of the table fields is idCategoria, from type integer. Now I am trying to assign the idCategoria value to a int variable in my app, but this showing a compiler warning. I have logged the value for categoriaID an it is 143913536 but should be 1.

This is the warning shown:

Incompatible pointer to integer conversion initializing 'int' with an expression of type 'id'

And this is how I am trying to do this:

 int categoriaID = [categoriaDescription objectForKey:@"idCategoria"];

Answer 1

尝试：

int categoriaID = [[categoriaDescription objectForKey:@"idCategoria"] intValue];