Objective-C从另一个类获取变量 [英] Objective-c Getting variable from another classe

问题描述

可能重复：

无法访问其他类的对象

我一直在做一个小项目，只是为了提高我对Objective-C语法和功能的理解，但我陷于自己的项目中，找不到答案。

I've been working on a little project just to increase my comprehension of the objective-c syntaxe and functionalities but I'm stuck in my own project and can't find the answer.

首先，我有两个类，在主类中，我声明了另一个类的对象，因此可以使用其他类中的函数。这就是我的做法（我刚刚写了我认为必要的东西：

First I've got two classes and in my main one I have declare a object of my other class so I can use the functions from my other class. This is how I did it (I just wrote the thing that I thought were necessary:

.h of my main class
import myOtherClass

@interface PkmViewController : UIViewController

    @property Pokemon * nomDePokemon;

.m of my main class
import myOtherClass

@synthesize nomDePokemon;

int nbDef = [nomDePokemon calculerUnNombrePourLaDefense];

.h of my other class

@interface Pokemon : NSObject

  @property int defencePoints;

-(int)calculerUnNombrePourLaDefense;

.m of my other class

@synthesize defencePoints;

-(int)calculerUnNombrePourLaDefense
{
    int nombrerandom = arc4random() % 45;
    return nombrerandom;
}

当我在主类中放置一个断点以查看该函数取了什么数字时，它总是给我0。当我将此节放在另一个班级时，它可以工作，但我想把它放在另一个班上以提高我的技能。有人可以向我解释如何做吗？

When I put a breakpoint in my main class to see what number is taken from the function, it always gives me 0. And when I put this section in my other class it works but I want to keep it in another class to improve my skills. Someone can explain me how to do it please?

推荐答案

听起来您实际上没有将Pokemon实例分配给您 nomDePokemon 变量。这意味着该变量包含 nil 而不是Pokemon对象，该变量返回 nil 或 0 以响应您发送的任何消息。要解决该问题，请创建一个神奇宝贝。

It sounds like you haven't actually assigned an instance of Pokemon to your nomDePokemon variable. This means that instead of a Pokemon object, the variable contains nil, which returns nil or 0 in response to any message you send it. To solve the problem, create a Pokemon.

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