通函#import参考 [英] Circular #import Reference

问题描述

我有一个Xcode项目，必须将数据从我的SettingsViewController传输到我的ViewController，问题是我必须在我的ViewController中实现我的SettingsViewController.h，因为它被推出了-但是要将数据从SettingsViewController发送到ViewController，我也必须在SettingsViewcontroller中实现ViewController，这也就是在程序被卡住时-不可能有循环的#import引用，不是吗?

I have a Xcode project where I have to transfer Data from my SettingsViewController to my ViewController, the Problem is that I have to implement my SettingsViewController.h in my ViewController, because it gets pushed out of that - but to send data from the SettingsViewController to ViewController I have to implement the ViewController in SettingsViewcontroller too thats when the Program gets stuck - it's not possible having a circular #import reference, isn´t it?

推荐答案

然后在所有.h文件中使用前向声明，然后将文件导入.m文件中

Use forward declaration in all the .h files then and import the files in .m files

检查此问题 Objective-C:转发类声明

前向声明如下:

@class SettingsViewController;

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