Download folder from server to local iPad / iPhone - ios

Question

I want to create an application that automatically downloads a folder from my own server and store it locally on the iPad/iPhone. How can i accomplish this and where does the folder get stored on the local iDevice ? Therefore how will i access it afterwards? Many thanks for your help

Answer 1

The best way to do so was actually putting all the pictures for example in one zip file, downloading it and unzipping it on the real device using this code :
dispatch_queue_t queue = dispatch_get_global_queue(
DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
dispatch_async(queue, ^{
NSURL *url = [NSURL URLWithString:#"someDirectory/newPics.zip"];
NSError *error = nil;
// 2
NSData *data = [NSData dataWithContentsOfURL:url options:0 error:&error];
if(!error)
{
// 3
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
NSString *path = [paths objectAtIndex:0];
NSString *zipPath = [path stringByAppendingPathComponent:#"newPics.zip"];
[data writeToFile:zipPath options:0 error:&error];
if(!error)
{
ZipArchive *za = [[ZipArchive alloc] init];
// 1
if ([za UnzipOpenFile: zipPath]) {
// 2
BOOL ret = [za UnzipFileTo: path overWrite: YES];
if (NO == ret){} [za UnzipCloseFile];
// 3
NSString *imageFilePath = [path stringByAppendingPathComponent:#"newPics/pic1.png"];
//[self removeImage:zipPath];
[[NSFileManager defaultManager] removeItemAtPath:zipPath error: &error];
dispatch_async(dispatch_get_main_queue(), ^{
NSURL *fileURL = [NSURL fileURLWithPath:imageFilePath];
[_webV loadRequest:[NSURLRequest requestWithURL:fileURL]];
});
}
}
else
{
NSLog(#"Error saving file %#",error);
}
}
else
{
NSLog(#"Error downloading zip file: %#", error);
}
});
It's the best way to do it , fast and reliable.