在 Objective C for iPhone 中创建 zip 文件

Posted 2023-03-06

【中文标题】在 Objective C for iPhone 中创建 zip 文件

【英文标题】：Creating zip files in ObjectiveC for iPhone

【发布时间】：2010-01-29 10:41:51

【问题描述】：

是否可以在 Objective C 中创建 .zip 文件？

任何可用的库或建议？

【问题讨论】：

复制：create-a-zip-archive-from-a-cocoa-application：***.com/questions/1928162/…

您真的要创建一个 zip 文件还是只是压缩一些数据？您可以使用现有的zlib 库非常轻松地压缩数据。

也是***.com/questions/286496/…的副本

也许可以看看这个创建 ZIP 文件的内置方法：***.com/a/32723162

【参考方案1】：

首先你从http://code.google.com/p/objective-zip/downloads/list下载Objective-zip示例

在本例中找到并复制三个文件夹 Objective-Zip、MiniZip 和 ZLib 拖入你的项目中

在你的 .m 类中导入两个类 “ZipFile.h”和 "ZipWriteStream.h"

zip 我的代码的创建方法是：-

-(IBAction)Zip
self.fileManager = [NSFileManager defaultManager];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory , NSUserDomainMask, YES);

NSString *ZipLibrary = [paths objectAtIndex:0];


NSString *fullPathToFile = [ZipLibrary stringByAppendingPathComponent:@"backUp.zip"];

//[self.fileManager createDirectoryAtPath:fullPathToFile attributes:nil];

//self.documentsDir = [paths objectAtIndex:0];


ZipFile *zipFile = [[ZipFile alloc]initWithFileName:fullPathToFile mode:ZipFileModeCreate];

NSError *error = nil;
self.fileManager = [NSFileManager defaultManager];
NSArray *paths1 = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory , NSUserDomainMask, YES);

self.documentsDir = [paths1 objectAtIndex:0];
NSArray *files = [[NSFileManager defaultManager]contentsOfDirectoryAtPath:self.documentsDir error:&error];
//for(NSString *filename in files)
    for(int i = 0;i<files.count;i++)

        id myArrayElement = [files  objectAtIndex:i];


    if([myArrayElement rangeOfString:@".png" ].location !=NSNotFound)
            NSLog(@"add %@", myArrayElement);


    NSString *path = [self.documentsDir stringByAppendingPathComponent:myArrayElement];
    NSDictionary *attributes = [[NSFileManager defaultManager]attributesOfItemAtPath:path error:&error];
    NSDate *Date = [attributes objectForKey:NSFileCreationDate];

    ZipWriteStream *streem = [zipFile writeFileInZipWithName:myArrayElement fileDate:Date compressionLevel:ZipCompressionLevelBest];
    NSData *data = [NSData dataWithContentsOfFile:path];
    //  NSLog(@"%d",data);
    [streem writeData:data];
    [streem finishedWriting];
        else if([myArrayElement rangeOfString:@".txt" ].location !=NSNotFound)
        

            NSString *path = [self.documentsDir stringByAppendingPathComponent:myArrayElement];
            NSDictionary *attributes = [[NSFileManager defaultManager]attributesOfItemAtPath:path error:&error];
            NSDate *Date = [attributes objectForKey:NSFileCreationDate];

            ZipWriteStream *streem = [zipFile writeFileInZipWithName:myArrayElement fileDate:Date compressionLevel:ZipCompressionLevelBest];
            NSData *data = [NSData dataWithContentsOfFile:path];
            //  NSLog(@"%d",data);
            [streem writeData:data];
            [streem finishedWriting];
    


[self testcsv];
[zipFile close];

您的文档目录保存的项目 .png 和 .txt 文件使用 backup.zip 压缩到库文件夹中 我希望这会有所帮助

【参考方案2】：

在有人提到http://code.google.com/p/ziparchive/ 之前。我评估了那个代码，它非常糟糕。我最终将它用于必须做的快速演示黑客，但我永远不会在生产中使用它。 ZipKit http://bitbucket.org/kolpanic/zipkit/wiki/Home 的状态似乎好多了。

【参考方案3】：

NSString *stringPath1 = [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)objectAtIndex:0]];
NSString *FileName=[stringPath1 stringByAppendingPathComponent:@"Your file name"];


NSString *stringPath=[stringPath1 stringByAppendingPathComponent:[@"Your file name" stringByAppendingFormat:@".zip"]];
NSArray *files = [[NSFileManager defaultManager]contentsOfDirectoryAtPath:FileName error:&error];
ZipFile *zipFile = [[ZipFile alloc]initWithFileName:stringPath mode:ZipFileModeCreate];

for(int i = 0;i<files.count;i++)

    id myArrayElement = [files  objectAtIndex:i];
    NSLog(@"add %@", myArrayElement);

    NSString *path = [FileName stringByAppendingPathComponent:myArrayElement];
    NSDictionary *attributes = [[NSFileManager defaultManager]attributesOfItemAtPath:path error:&error];
    NSDate *Date = [attributes objectForKey:NSFileCreationDate];

    ZipWriteStream *streem = [zipFile writeFileInZipWithName:myArrayElement fileDate:Date compressionLevel:ZipCompressionLevelBest];
    NSData *data = [NSData dataWithContentsOfFile:path];
    [streem writeData:data];
    [streem finishedWriting];


[zipFile close];