Question

在我的应用程序中，当用户购买应用程序时，应用程序需要下载zip文件并将其解压缩到应用程序的文档文件夹。 zip文件下载并可以解压缩。我正在使用Objective Zip来解压缩存档。问题是，在尝试为每个文件创建文件夹路径时，永远不会创建文件夹，也没有错误。

以下是发生这种情况的部分的示例代码：

// Create file manager
NSFileManager *fileMgr = [NSFileManager defaultManager];

//Unzip
NSString *applicationDocumentsDir = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
ZipFile *unzipFile = [[ZipFile alloc] initWithFileName:[applicationDocumentsDir stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.zip",@"Mid America Oireachtas 2011"]] mode:ZipFileModeUnzip];
NSArray *infos= [unzipFile listFileInZipInfos];
for (FileInZipInfo *info in infos) {
    //NSLog(@"- %@ %@ %d (%d)", info.name, info.date, info.size, info.level);

    // Locate the file in the zip
    [unzipFile locateFileInZip:info.name];

    // Expand the file in memory
    ZipReadStream *read= [unzipFile readCurrentFileInZip];
    NSMutableData *data= [[NSMutableData alloc] initWithLength:info.length];
    int bytesRead = [read readDataWithBuffer:data];
    [read finishedReading];
    NSString *appSupportFolder = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
    NSString *pathfull = [appSupportFolder stringByAppendingPathComponent:info.name];
    NSString *path = [[pathfull stringByDeletingLastPathComponent] copy];
    NSError *errorw;
    NSRange range = [path rangeOfString:@"__MACOSX"];
    if (range.location == NSNotFound) {
        NSLog(@"last: %@", [path lastPathComponent]);
        if ([fileMgr createDirectoryAtPath:path withIntermediateDirectories:YES attributes:nil error:&errorw]) {
            NSLog(@"Create Folder: %@", path);
            NSLog(@"Directory Win: %@", errorw);
            if (![[pathfull pathExtension] isEqualToString:@""] && ![[[pathfull lastPathComponent] substringToIndex:1] isEqualToString:@"." ]) {
                [data writeToFile:pathfull atomically:NO];
            }
        }
        else {
            //NSLog(@"Create Folder: %@", path);
            NSLog(@"Directroy Fail: %@", errorw);
        }
    }
}

[unzipFile close];

//delete zip
// For error information
NSError *error;

if ([fileMgr removeItemAtPath:[applicationDocumentsDir stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.zip",@"Mid America Oireachtas 2011"]] error:&error] == YES) {
    NSLog(@"File Deleted");
}

//delete zip
// For error information
NSError *error;

if ([fileMgr removeItemAtPath:[applicationDocumentsDir stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.zip",@"My Zip"]] error:&error] == YES) {
    NSLog(@"File Deleted");
}

以下是日志文件的相关输出片段：

    2012-01-04 17:12:51.509 WhatsMyStageOn[3232:15503] Create Folder: /Users/Brandon/Library/Application Support/iPhone Simulator/5.0/Applications/436C2C49-D79B-4CDA-B0AA-15BB98F6F75E/WhatsMyStageOn.app/
    2012-01-04 17:12:51.510 WhatsMyStageOn[3232:15503] Directory Win: (null)
    2012-01-04 17:12:51.510 WhatsMyStageOn[3232:15503] Create Folder: /Users/Brandon/Library/Application Support/iPhone Simulator/5.0/Applications/436C2C49-D79B-4CDA-B0AA-15BB98F6F75E/WhatsMyStageOn.app/Documents/Mid America Oireachtas 2011
    2012-01-04 17:12:51.510 WhatsMyStageOn[3232:15503] Directory Win: (null)
    2012-01-04 17:12:51.510 WhatsMyStageOn[3232:15503] Create Folder: /Users/Brandon/Library/Application Support/iPhone Simulator/5.0/Applications/436C2C49-D79B-4CDA-B0AA-15BB98F6F75E/WhatsMyStageOn.app/Documents
    2012-01-04 17:12:51.510 WhatsMyStageOn[3232:15503] Directory Win: (null)
    2012-01-04 17:12:51.511 WhatsMyStageOn[3232:15503] Create Folder: /Users/Brandon/Library/Application Support/iPhone Simulator/5.0/Applications/436C2C49-D79B-4CDA-B0AA-15BB98F6F75E/WhatsMyStageOn.app/Documents/__MACOSX
    2012-01-04 17:12:51.511 WhatsMyStageOn[3232:15503] Directory Win: (null)
    2012-01-04 17:12:51.511 WhatsMyStageOn[3232:15503] Create Folder: /Users/Brandon/Library/Application Support/iPhone Simulator/5.0/Applications/436C2C49-D79B-4CDA-B0AA-15BB98F6F75E/WhatsMyStageOn.app/Documents/__MACOSX/Mid America Oireachtas 2011
    2012-01-04 17:12:51.511 WhatsMyStageOn[3232:15503] Directory Win: (null)
    2012-01-04 17:12:51.511 WhatsMyStageOn[3232:15503] Create Folder: /Users/Brandon/Library/Application Support/iPhone Simulator/5.0/Applications/436C2C49-D79B-4CDA-B0AA-15BB98F6F75E/WhatsMyStageOn.app/Documents/Mid America Oireachtas 2011
    2012-01-04 17:12:51.512 WhatsMyStageOn[3232:15503] Directory Win: (null)
    2012-01-04 17:12:51.544 WhatsMyStageOn[3232:15503] Create Folder: /Users/Brandon/Library/Application Support/iPhone Simulator/5.0/Applications/436C2C49-D79B-4CDA-B0AA-15BB98F6F75E/WhatsMyStageOn.app/Documents/Mid America Oireachtas 2011/Attractions
    2012-01-04 17:12:51.544 WhatsMyStageOn[3232:15503] Directory Win: (null)

阅读NSFileManager文档，这是应该在日志中输出的内容，但是，没有创建文件夹。

编辑：修正了不使用文档问题，仍然有与编辑前谴责相同的问题。

编辑：更新了工作解决方案的代码！

Answer 1

你不应该写应用程序包本身。试试这个：

NSString *appSupportFolder = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
NSString *path = [appSupportFolder stringByAppendingPathComponent:info.name];

Answer 2

我认为您无法直接在WhatsMyStageOn.app/内创建目录，请尝试在Documents目录中创建目录。

NSMutableString *path = [info.name mutableCopy];
path = [[path stringByDeletingLastPathComponent] mutableCopy];
path = [NSMutableString  stringWithFormat:@"%@/%@", applicationDocumentsDir, path];

底部有一行删除了Documents中的正确文件路径，但您的原始路径变量指向bundle目录，而不是Documents目录。

NSFileManager createDirectoryAtPath：withIntermediateDirectories：不创建目录或创建错误

2 个答案: