IOS文件系统－获取相应文件夹

1。实现：NSFileManager

- (NSArray *)URLsForDirectory:(NSSearchPathDirectory)directory inDomains:(NSSearchPathDomainMask)domainMask

URLsForDirectory: NSLibraryDirectory(app应用的库文件夹) / NSCachesDirectory:缓存文件夹
/ NSDocumentDirectory

inDomains: NSUserDomainMask

e.g.

NSFileManager *fileManager = [[NSFileManager alloc] init];
NSArray *documentUrls = [fileManager URLsForDirectory:NSDocumentDirectory inDomains:NSUserDomainMask];

if ([documentUrls count] > 0){
NSURL *documentsFolder = documentUrls[0];
NSLog(@"%@", documentsFolder);
} else {
NSLog(@"Could not find the Documents folder.");
}

NSArray *cachesUrls = [fileManager URLsForDirectory:NSCachesDirectory inDomains:NSUserDomainMask];

if ([cachesUrls count] > 0){
NSURL *cachesFolder =
cachesUrls[0];
NSLog(@"%@", cachesFolder);
} else {
NSLog(@"Could not find the Caches folder.");
}

NSString *tempDirectory =
NSTemporaryDirectory();
NSLog(@"Temp Directory = %@", tempDirectory);