在ObjectiveC for iPhone中创建zip文件

Question

是否可以在目标C中创建.zip文件？

有可用的图书馆或建议吗？

Answer 1

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

在此示例中查找并复制三个文件夹Objective-Zip,MiniZip和ZLib拖入您的项目

在.m类"ZipFile.h"和"ZipWriteStream.h"中导入两个类

我的代码创建方法是: -

-(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];

}

你的文件目录保存项目.png和.txt文件在library文件夹中使用backup.zip压缩我希望这是有帮助的