我有一个cocoa应用程序,我想接受来自mail.app的电子邮件拖入应用程序的主窗口。我在我的applicationDidFinishLaunching:
[_window registerForDraggedTypes:
[NSArray arrayWithObjects:
NSFilenamesPboardType,
(NSString *)kPasteboardTypeFileURLPromise, nil]]; //kUTTypeData
[_window setDelegate:(id) self];
这很好,我可以在performDragOperation中使用
接收文档NSArray * files = [sender namesOfPromisedFilesDroppedAtDestination:url];
但是,这只能让我逐个拖动电子邮件。如果我标记了几封电子邮件,一切似乎都没问题,直到我放弃,然后什么也没发生甚至没有调用performDragOperation。
我试图将kUTTypeData添加到registerForDraggedTypes ...,然后我调用performDragOperation ...但是我不能使用namesOfPromisedFilesDroppedAtDestination:url,因为它返回一个nil指针。
当我将kUTTypeData包含在寄存器中时...我在performDragOperation中包含了这个以查看拖动中的类型:
pboard = [sender draggingPasteboard];
NSLog(@"perform drag entered, %@", [pboard types]);
具有以下结果:
2013-07-25 15:09:50.771 BO2ICAL[1672:303] perform drag entered, (
"dyn.ah62d4rv4gu8y4zvanr41a3pwfz30n25wqz4ca5pfsr30c35feb4he2pssrxgn6vasbu1g7dfqm10c6xeeb4hw6df",
"MV Super-secret message transfer pasteboard type",
"dyn.ah62d4rv4gu8zg7puqz3c465fqr3gn7bakf41k55rqf4g86vasbu1g7dfqm10c6xeeb4hw6df",
"Super-secret Automator pasteboard type"
)
单个电子邮件列表为:
2013-07-25 15:14:30.096 BO2ICAL [1672:303]执行拖动输入,( “dyn.ah62d4rv4gu8y4zvanr41a3pwfz30n25wqz4ca5pfsr30c35feb4he2pssrxgn6vasbu1g7dfqm10c6xeeb4hw6df” “MV超级秘密消息转移粘贴板类型”, “dyn.ah62d4rv4gu8zg7puqz3c465fqr3gn7bakf41k55rqf4g86vasbu1g7dfqm10c6xeeb4hw6df” “超级秘密Automator纸板类型”, “dyn.ah62d4rv4gu8yc6durvwwa3xmrvw1gkdusm1044pxqyuha2pxsvw0e55bsmwca7d3sbwu” “Apple文件承诺粘贴板类型”, “public.url” “CorePasteboardFlavorType 0x75726C20”, “dyn.ah62d4rv4gu8yc6durvwwaznwmuuha2pxsvw0e55bsmwca7d3sbwu” “Apple URL粘贴板类型”, “public.url名”, “CorePasteboardFlavorType 0x75726C6E”, “com.apple.pasteboard.promised文件内容类型”, “com.apple.pasteboard.promised文件的URL”, “dyn.ah62d4rv4gu8y6y4usm1044pxqzb085xyqz1hk64uqm10c6xenv61a3k” NSPromiseContentsPboardType )
有没有人有任何建议如何正确地做到这一点才能接受多封电子邮件?
答案 0 :(得分:2)
我找到了解决方法。我发现在“kUTTypeData”模式下提供的数据给了我足够的数据来直接从mail.app邮箱中获取文件。
在mbox文件夹中,有一个包含长序列号和短划线的文件夹,邮箱层次结构中的任何位置都没有此名称的跟踪,但由于这只包含此文件夹和info.plist文件,因此我使用了这个函数来获取该名称:更新:实现了regexp检查,因为该文件夹有时包含可以具有更长名称的子邮箱...
-(NSString*)FindCodedFolderInMailbox:(NSString*)mailboxpath {
NSString *uuid_regexp = @"[A-F0-9]{8}-[A-F0-9]{4}-[A-F0-9]{4}-[A-F0-9]{4}-[A-F0-9]{12}";
NSPredicate *uuid_test = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", uuid_regexp];
NSFileManager *fileManager = [NSFileManager defaultManager];
NSArray *fileList = [fileManager contentsOfDirectoryAtPath:mailboxpath error:nil];
for (NSString * file in fileList) {
if ([uuid_test evaluateWithObject: file]){
return file;
}
}
return nil;
}
然后我找到的部分没有“NSPromiseContentsPboardType”,而是“超级秘密Automator粘贴板类型”,我编写了以下部分(我打算删除一些NSLog条目,但这里是:< / p>
} else if ( [[pboard types] containsObject:@"Super-secret Automator pasteboard type"] ) {
NSFileManager *fileManager = [NSFileManager defaultManager];
// Create the URL for the destination folder and ensure it exists.
NSURL *applicationFilesDirectory = [self applicationFilesDirectory];
NSURL *url = [applicationFilesDirectory URLByAppendingPathComponent:@"documents"];
BOOL isDir;
if (!([fileManager fileExistsAtPath:[url path] isDirectory:&isDir] && isDir)) {
NSError * error = nil;
[ fileManager createDirectoryAtURL:url withIntermediateDirectories: YES attributes:nil error:&error];
if (error) {
[[NSApplication sharedApplication] presentError:error];
}
}
BOOL ok = false;
// locate the mailbox path....
NSString *mailboxpath = [pboard stringForType:@"MV Super-secret message transfer pasteboard type"];
NSLog(@"Mailboxpath: %@", mailboxpath);
NSString * codedFolder = [self FindCodedFolderInMailbox:mailboxpath];
if (codedFolder) {
NSString * codedpath = [NSString stringWithFormat:@"file://%@/%@/Data", mailboxpath, codedFolder];
NSURL * mb1 = [NSURL URLWithString:codedpath];
NSLog(@"Directory:%@", mb1);
NSArray *msgArray = [pboard propertyListForType:@"Super-secret Automator pasteboard type"];
if (msgArray) {
for (NSDictionary *msg in msgArray) {
// Locate the message....
NSNumber * msgID = [msg valueForKey:@"id"];
NSLog(@"Melding(%@):%@", msgID, msg);
NSString * filename = [NSString stringWithFormat:@"%@.emlx", msgID];
// second and first letter of id
NSString * idSec = [[msgID stringValue]substringWithRange:(NSRange){1, 1}];
NSString * idFirst = [[msgID stringValue]substringWithRange:(NSRange){0, 1}];
NSString * subpath = [NSString stringWithFormat:@"%@/%@/Messages/%@",idSec, idFirst, filename];
NSURL * thisFilePath = [mb1 URLByAppendingPathComponent:subpath];
if ([fileManager fileExistsAtPath:[thisFilePath path]]) {
NSURL *destpath = [url URLByAppendingPathComponent:filename];
NSError * error = nil;
[fileManager copyItemAtURL:thisFilePath toURL:destpath error:&error];
if (error) {
[[NSApplication sharedApplication]presentError:error];
} else {
[self ParseEmlMessageforPath:[destpath path] filename:filename];
}
}
}
}
}
我们在这里......: - )