在我的应用程序中,我正在使用相机拍摄几张照片。这些图片需要一次发送。出于这个原因,我正在尝试实现一个函数来压缩我拍摄的照片。
我一直在网上寻找我可以在我的项目中使用的几个库。我推出了Objective Zip(http://code.google.com/p/objective-zip/wiki/GettingStarted)。然而,我唯一成功的是压缩(或解压缩)文本文件。但是没有提到压缩(或解压缩)照片。
我已成功将令牌照片转换为NSData对象。现在我想将它们压缩为Zip文件。有没有人有过这些功能的经验。
非常感谢帮助!
修改
我现在正在使用Objective Zip库,但我的应用程序一直在崩溃。仍然得到已知错误“线程1:程序接收信号:”SIGARBT“”。我正在尝试将我用相机拍摄的一张图像压缩并存储在文档目录中。
在该片段中,您可以看到我正在调用我拍摄的照片并使用ZipFile方法进行压缩。最后,我将我的zip文件作为电子邮件附件发送。
以下是我的代码片段:
-(IBAction)sendID{
NSString *docDir3 = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString *docDir4 = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString *pngFilePath3 = [NSString stringWithFormat:@"%@/photo.png",docDir3];
// Create the zip file
ZipFile *zipFile = [[ZipFile alloc] initWithFileName:docDir4 mode:ZipFileModeCreate];
// Read the files in the data directory
NSError *error = nil;
NSArray *files = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:pngFilePath3 error:&error];
//ZipWriteStream *stream1= [zipFile writeFileInZipWithName:@"abc.txt" fileDate:[NSDate //dateWithTimeIntervalSinceNow:-86400.0] compressionLevel:ZipCompressionLevelBest];
// Write each file to our zip
for (NSString *filename in files) {
// Write the file
ZipWriteStream *stream = [zipFile writeFileInZipWithName:filename compressionLevel:ZipCompressionLevelBest];
NSData *data = [NSData dataWithContentsOfFile:pngFilePath3];
[stream writeData:data];
[stream finishedWriting];
}
// Close the zip file
[zipFile close];
NSData *data = [NSData dataWithContentsOfFile:@"Test.zip"];
MFMailComposeViewController *picker = [[MFMailComposeViewController alloc] init];
picker.mailComposeDelegate=self;
//NSData *imageData = UIImageJPEGRepresentation(viewImage, 1);
[picker addAttachmentData:data mimeType:@"application/zip" fileName:@"Test.zip"];
Class mailclass = (NSClassFromString(@"MFMailComposeViewController"));
if([mailclass canSendMail]){
[self presentModalViewController:picker animated:YES];
}
}
希望任何人都可以帮助我。
答案 0 :(得分:2)
我知道这是一个旧线程,但这是我如何使用Objective-Zip压缩多个文件:
- (NSString*) objectiveZip:(NSArray*)passedFiles
{
NSString *outputPath = [self getOutputDirectory];
NSString *zipFileName = @"MyZip.zip";
outputPath = [outputPath stringByAppendingString:zipFileName];
//Create a zip file for writing
ZipFile *zipFile= [[ZipFile alloc] initWithFileName:outputPath mode:ZipFileModeCreate];
//Add all the files, write to its stream and close it
for(NSString *string in passedFiles)
{
NSString *fileName = string;
NSLog(@"Add file to zip: %@", fileName);
ZipWriteStream *stream1= [zipFile writeFileInZipWithName:fileName fileDate:[NSDate dateWithTimeIntervalSinceNow:-86400.0] compressionLevel:ZipCompressionLevelBest];
[stream1 writeData:[NSData dataWithContentsOfURL:[NSURL URLWithString:info.pdfUrl]]];
[stream1 finishedWriting];
}
// Close the zip file
[zipFile close];
return outputPath;
}
答案 1 :(得分:1)
我找到的最好的zip库是SSZipArchive。给那个人一个机会。
答案 2 :(得分:0)
NSString * temp = [[[makeZip textFieldAtIndex:0] text] stringByAppendingPathExtension:@“zip”];
NSString * zippedPath = [pathString stringByAppendingPathComponent:temp];
NSMutableArray * inputPaths = [[NSMutableArray alloc] init];
for (int i=0; i<[selectedRows count]; i++) {
[inputPaths addObject:[pathStringstringByAppendingPathComponent:[selectedRows objectAtIndex:i]]];
}
if (![[NSFileManager defaultManager] fileExistsAtPath:zippedPath])
{
[SSZipArchive createZipFileAtPath:zippedPath withFilesAtPaths:inputPaths];
[directoryContents addObject:temp];
[tblview reloadData];
}