ios NSCachesDirectory 不是我的文件系统中的目录
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NSCachesDirectory not a directory in my file system
提问by user888382
I'm trying to store something in my Caches folder on my iPad app.
我正在尝试在 iPad 应用程序的 Caches 文件夹中存储一些内容。
NSArray* cachePathArray = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
NSString* cachePath = [cachePathArray lastObject];
And when I print out the returned filepath, I get:
当我打印出返回的文件路径时，我得到：
/Users/Gela/Library/Application Support/iPhone Simulator/5.0/Applications/3FF7EB1A-49A9-4B13-ADC4-DF0662BA724B/Library/Caches
/Users/Gela/Library/Application Support/iPhone Simulator/5.0/Applications/3FF7EB1A-49A9-4B13-ADC4-DF0662BA724B/Library/Caches
However, when I navigate to that folder on my hard drive, "Caches" is not a folder but a vague "document" file.
但是，当我导航到硬盘驱动器上的那个文件夹时，“缓存”不是一个文件夹，而是一个模糊的“文档”文件。
Any ideas why it's not a folder and how I can write to my Cache?
任何想法为什么它不是文件夹以及我如何写入我的缓存？
回答by Srikar Appalaraju
Maybe Simulatordoes not have Cachesdir. You try this on device...
也许Simulator没有Caches目录。你在设备上试试这个...
You can access the Cachesdirectory like this. I use this method for getting file data...
您可以Caches像这样访问目录。我使用这种方法来获取文件数据...
- (NSString *)getFileData: (NSString *)fileDirPath
{
NSArray *myPathList = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
NSString *myPath = [myPathList objectAtIndex:0];
NSError *err = nil;
NSString *fData = @"";
myPath = [myPath stringByAppendingPathComponent:fileDirPath];
if([[NSFileManager defaultManager] fileExistsAtPath:myPath])
{
fData = [NSString stringWithContentsOfFile:myPath encoding:NSUTF8StringEncoding error:&err];
if(err) NSLog(@"getFileData() - ERROR: %@",[err localizedDescription]);
}
else
{
NSLog(@"getFileData() - ERROR: This file '%@' does not exist",myPath);
}
return fData;
}
