Copy folder from iPhone Resources directory to document directory - iphone

Question

BOOL success;
NSFileManager *fileManager = [[NSFileManager defaultManager]autorelease];
NSError *error;
NSArray *paths = NSSearchPathForDirectoriesInDomains( NSDocumentDirectory,
NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *documentDBFolderPath = [documentsDirectory stringByAppendingPathComponent:#"DB"];
success = [fileManager fileExistsAtPath:documentDBFolderPath];
if (success){
return;
}else{
NSString *resourceDBFolderPath = [[[NSBundle mainBundle] resourcePath]
stringByAppendingPathComponent:#"DB"];
[fileManager createDirectoryAtPath: documentDBFolderPath attributes:nil];
[fileManager copyItemAtPath:resourceDBFolderPath toPath:documentDBFolderPath
error:&error];
}
}
Like this.
Resources/DB/words.csv => DB folder copy => Document/DB/words.csv
I want to copy DB subdirectory at Resources folder. I thought that source is good. But that source makes folder and doesn't copy files in DB folder at Resources folder.
I really want to copy files in DB folder at Resources folder. please help me.

Answer 1

1) Do not -autorelease the NSFileManager. You are double-releasing it which will crash your app.
2) No need to call -createDirectoryAtPath:. From the SDK doc of -copyItemAtPath:toPath:error:,
The file specified in srcPath must exist, while dstPath must not exist prior to the operation
and creating the directory the copy to fail.

Answer 2

Swift 3.0
Using String
func copyFolder(){
// Get the resource folder
if let resourceMainPath = Bundle.main.resourcePath{
var isDirectory = ObjCBool(true)
// Get the path of the folder to copy
let originPath = (resourceMainPath as NSString).appendingPathComponent("NameOfFolder")
// Get the destination path, here copying to Caches
let destinationPath = NSSearchPathForDirectoriesInDomains(.cachesDirectory, .userDomainMask, true).first!
// Append the folder name to dest path so that system creates the directory if it doesnt exist
let destPath = (destinationPath as NSString).appendingPathComponent("/NameOfFolder")
let fileManager = FileManager.default
if fileManager.fileExists(atPath: destPath, isDirectory:&isDirectory ){
// If an overwrite behavior is needed, remove and copy again here
print("Exists")
}else{
// Do the copy
do {
try fileManager.copyItem(atPath: originPath, toPath: destPath)
}catch let error{
print(error.localizedDescription)
}
}
}else{
}
}
Using URL
func copyTheFolder(){
// Get the resource folder
if let resourceMainURL = Bundle.main.resourceURL{
var isDirectory = ObjCBool(true)
// Get the path of the folder to copy
let originPath = resourceMainURL.appendingPathComponent("NameOfFolder")
// Get the destination path, here copying to Caches
let destinationPath = NSSearchPathForDirectoriesInDomains(.cachesDirectory, .userDomainMask, true).first!
// Append the folder name to dest path so that system creates the directory if it doesnt exist
let destURL = URL(fileURLWithPath: destinationPath).appendingPathComponent("/NameOfFolder")
let fileManager = FileManager.default
if fileManager.fileExists(atPath: destURL.path, isDirectory:&isDirectory ){
// If an overwrite behavior is needed, remove and copy again here
print("Exists")
}else{
// Do the copy
do {
try fileManager.copyItem(at: originPath, to: destURL)
}catch let error{
print(error.localizedDescription)
}
}
}
}