如何在获取时初始化PFObject子类？

Question

Parse文档特别声明您不应该为PFObject的子类重写init。这对于在代码中创建的对象是可以的，因为你可以覆盖对象方法，就像这样......

@implementaion CustomObject : PFObject <Subclassing>

+ (instancetype) object {
    CustomObject *me = [super object];

    // init some instance variables or whatever

    return me;
}

@end

这适用于本案例：     CustomObject * myThing = [CustomObject object];

但是从查询中获取对象时似乎没有调用对象....

PFQuery *query = [CustomObject query];
[query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
    if (!error) {
        for(int i = 0; i < objects.count; i++){
            CustomObject *myThing = objects[i];
            // object method was never called...
        }
    }
}];

那么......如何在获取自定义PFObject时初始化它？

Answer 1

可能您还没有注册子类。

只需在

之前致电[CustomObject register]

[Parse setApplicationId:@"your id"
                  clientKey:@"your key"];

或添加到子类

+ (void) load{
    [self register];
}