如何在iOS中递归获取我的包中的所有资源路径？

Question

我的应用程序包中有一个"解压缩"文件夹.我需要获取txt类型的所有文件的资源路径.我一直在用这个,

NSArray *filePaths = [NSBundle pathsForResourcesOfType:@"txt" inDirectory:[[[NSBundle mainBundle] bundlePath] stringByAppendingString:@"/unzipped"]];

但它只获取第一个目录中的文件.我错过了哪个递归版本的某个地方？

Answer 1

我使用@rekle发布的代码作为起点让这个工作.诀窍是使用NSDirectoryEnumerator,它将以递归方式执行此操作.这是我写的功能,以防任何人需要它.

- (NSArray *)recursivePathsForResourcesOfType:(NSString *)type inDirectory:(NSString *)directoryPath{

    NSMutableArray *filePaths = [[NSMutableArray alloc] init];

    // Enumerators are recursive
    NSDirectoryEnumerator *enumerator = [[[NSFileManager defaultManager] enumeratorAtPath:directoryPath] retain];

    NSString *filePath;

    while ((filePath = [enumerator nextObject]) != nil){

        // If we have the right type of file, add it to the list
        // Make sure to prepend the directory path
        if([[filePath pathExtension] isEqualToString:type]){
            [filePaths addObject:[directoryPath stringByAppendingPathComponent:filePath]];
        }
    }

    [enumerator release];

    return [filePaths autorelease];
}

斯威夫特,使用 NSURL

func recursivePathsForResources(type type: String) -> [NSURL] {

    // Enumerators are recursive
    let enumerator = NSFileManager.defaultManager().enumeratorAtPath(bundlePath)
    var filePaths = [NSURL]()

    while let filePath = enumerator?.nextObject() as? String {

        if NSURL(fileURLWithPath: filePath).pathExtension == type {
            filePaths.append(bundleURL.URLByAppendingPathComponent(filePath))
        }
    }

    return filePaths
}

Answer 2

只是更新此方法以允许任何文件类型(nil)并提供正确的路径格式

- (NSArray *)recursivePathsForResourcesOfType:(NSString *)type inDirectory:(NSString *)directoryPath{

    NSMutableArray *filePaths = [[NSMutableArray alloc] init];
    NSDirectoryEnumerator *enumerator = [[NSFileManager defaultManager] enumeratorAtPath:directoryPath];

    NSString *filePath;

    while ((filePath = [enumerator nextObject]) != nil){
        if (!type || [[filePath pathExtension] isEqualToString:type]){
            [filePaths addObject:[directoryPath stringByAppendingPathComponent:filePath]];
        }
    }

    return filePaths;
}