如何将数据追加到 NSKeyedArchive？
我正在读取这样的文件：
NSData *data = [NSData dataWithContentsOfFile:myPath];
NSKeyedUnarchiver *unarchiver = [[NSKeyedUnarchiver alloc] initForReadingWithData:data];
NSData *imgData = [unarchiver decodeObjectForKey:@"myimage"];
if (imgData != nil) {
self.image = [[NSImage alloc]initWithData:imgData];
}else{
self.image = nil;
}
[unarchiver finishDecoding];
[unarchiver release];
我想做的是将键@“myimage”的图像数据附加到同一个文件（如果它不存在）。
该怎么办呢？
I'm reading a file like so:
NSData *data = [NSData dataWithContentsOfFile:myPath];
NSKeyedUnarchiver *unarchiver = [[NSKeyedUnarchiver alloc] initForReadingWithData:data];
NSData *imgData = [unarchiver decodeObjectForKey:@"myimage"];
if (imgData != nil) {
self.image = [[NSImage alloc]initWithData:imgData];
}else{
self.image = nil;
}
[unarchiver finishDecoding];
[unarchiver release];
What I'd like to do is to append image data for key @"myimage" to the same file if it doesn't exist.
How to go about it?
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似乎没有办法“追加”到 NSKeyedArchive，所以我只是重新创建了它并添加了额外的数据并覆盖了原始文件。
It seems that there's no way to "append" to NSKeyedArchive, so I just re-created it with the extra data added and have written over the original file.