iOS将文件从主包复制到文档目录 [英] iOS copy files from main bundle to documents directory

问题描述

我试图将我添加到名为includes的文件夹中的文件复制到文档目录中也称为includes的文件夹中。我得到resContents nil值。为什么？谢谢

I am trying to copy files that I add to a folder called "includes" to a folder on documents directory called also "includes". I get for resContents nil value. Why? Thank you

- (void)copyResources{

        NSString *sourcePath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"includes"];
        NSString *destPath = [[self applicationDocumentsDirectory] stringByAppendingPathComponent:@"includes"];

        NSArray* resContents = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:sourcePath error:NULL];

        for (NSString* obj in resContents){
            NSError* error;
            if (![[NSFileManager defaultManager] copyItemAtPath:[sourcePath stringByAppendingPathComponent:obj] toPath:[destPath stringByAppendingPathComponent:obj]
                  error:&error])
                NSLog(@"Error: %@", error);;
        }

    }

推荐答案

您应该将包含文件夹作为文件夹引用添加到您的Xcode项目中，而不是一个组。

You should add to your Xcode project your includes folder as a folder reference and not a group.

组只是为了保持组织，而不是提供文件夹结构，因此，当复制到设备，所有的文件结束在同一级别。

Groups are just meant to keep things organized rather than provide a folder structure and therefore when copying to the device, all the files end up at the same level.

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