NEHotspotConfigurationManagerを使ってWi-fiに接続する（Objective-C版）

#import <NetworkExtension/NetworkExtension.h>

NEHotspotConfigurationManager *manager = [NEHotspotConfigurationManager sharedManager];
NEHotspotConfiguration *config = [[NEHotspotConfiguration alloc] initWithSSID:@"your ssid" passphrase:@"your passwd" isWEP:NO];
[manager applyConfiguration:config completionHandler:^(NSError *error){
    if(error) {
        NSLog([error localizedDescription]);
    }else{
        NSLog(@"connected");
    }
}];