How to Detect wifi or 3G signal strength in iOS? - ios

Question

I am working on video player using MPMediaplayer framework in iOS, I need to play two videos in my app.(i.e. My first video will play when user has strong Network signal).
My second video player will be played when their low network. I need to play my video in wifi or 3G etc... My First thing is how to detect my wifi speed in my iphone mobile and 3G speed also. I need to get mobile wifi speed in MBPS. I am was trying to write some code. But it is not working for me. Thanks in advance.
#import "Reachability.h"
#interface NetworkViewController ()
#end
#implementation NetworkViewController
- (void)viewDidLoad
{
[super viewDidLoad];
self.view.backgroundColor = [UIColor whiteColor];
[self getDataCounters];
networkLabel = [[UILabel alloc]initWithFrame:CGRectMake(20, 100, 300, 40)];
networkLabel.textColor = [UIColor blackColor];
networkLabel.backgroundColor = [UIColor whiteColor];
networkLabel.userInteractionEnabled = NO;
networkLabel.text = myNewString;
[self.view addSubview:networkLabel];
}
- (NSArray *)getDataCounters
{
BOOL success;
struct ifaddrs *addrs;
const struct ifaddrs *cursor;
const struct if_data *networkStatisc;
int WiFiSent = 0;
int WiFiReceived = 0;
int WWANSent = 0;
int WWANReceived = 0;
NSString *name=[[NSString alloc]init];
success = getifaddrs(&addrs) == 0;
if (success)
{
cursor = addrs;
while (cursor != NULL)
{
name=[NSString stringWithFormat:#"%s",cursor->ifa_name];
NSLog(#"ifa_name %s == %#\n", cursor->ifa_name,name);
// names of interfaces: en0 is WiFi ,pdp_ip0 is WWAN
if (cursor->ifa_addr->sa_family == AF_LINK)
{
if ([name hasPrefix:#"en"])
{
networkStatisc = (const struct if_data *) cursor->ifa_data;
WiFiSent+=networkStatisc->ifi_obytes;
WiFiReceived+=networkStatisc->ifi_ibytes;
NSLog(#"WiFiSent %d ==%d",WiFiSent,networkStatisc->ifi_obytes);
NSLog(#"WiFiReceived %d ==%d",WiFiReceived,networkStatisc->ifi_ibytes);
NSLog(#"wifi data is %.2f",(float)WiFiReceived/1048576);
myNewString = [NSString stringWithFormat:#"%2f", (float)WiFiReceived/1048576];
networkLabel.text = myNewString;
}
if ([name hasPrefix:#"pdp_ip"])
{
networkStatisc = (const struct if_data *) cursor->ifa_data;
WWANSent+=networkStatisc->ifi_obytes;
WWANReceived+=networkStatisc->ifi_ibytes;
NSLog(#"WWANSent %d ==%d",WWANSent,networkStatisc->ifi_obytes);
NSLog(#"WWANReceived %d ==%d",WWANReceived,networkStatisc->ifi_ibytes);
}
}
cursor = cursor->ifa_next;
}
freeifaddrs(addrs);
}
return [NSArray arrayWithObjects:[NSNumber numberWithInt:WiFiSent], [NSNumber numberWithInt:WiFiReceived],[NSNumber numberWithInt:WWANSent],[NSNumber numberWithInt:WWANReceived], nil];
}

Answer 1

You can play high resolution video for wifi and low resolution video on cellular data.
Reachability *reachability = [Reachability reachabilityForInternetConnection];
[reachability startNotifier];
NetworkStatus status = [reachability currentReachabilityStatus];
if(status == NotReachable)
{
//No internet
}
else if (status == ReachableViaWiFi)
{
//WiFi Play high resolution video
}
else if (status == ReachableViaWWAN)
{
//3G Play low resolution video
}
Apple can reject your app if you will stream high resolution video over 3g Network.