其實本身 APPLE 都出左個 CLASS，用來 CHECK
1. connected
2. wifi
3. mobile network connection
上網或係 XCODE 搵 reachability ,可以係 APPLE DOWNLOAD
個 PACKAGE 有 reachability.m , 同埋 reachability.h
要用個陣 抄入去係個 PROJECT 入边
另外要加個 framework 叫 SystemConfiguration.framework
以下係 EXAMPLE
我用黎係未 CONNECTED 可以參考 。。或者可以參考 reachability.m
TestConnection.h
#import
@class Reachability;
@interface TestConnectionViewController : UIViewController {
Reachability* internetReach;
}
@end
TestConnection.m
- (BOOL)checkInternetConnection{
BOOL connected;
internetReach = [[Reachability reachabilityForInternetConnection] retain];
[internetReach startNotifier];
NetworkStatus netStatus = [internetReach currentReachabilityStatus];
if (netStatus == NotReachable) {
NSLog(@"Internet Connection Fail");
connected = NO;
}else {
NSLog(@"Internet Connection Success");
connected = YES;
}
return connected;
}
//Called by Reachability whenever status changes.
- (void) reachabilityChanged: (NSNotification* )note
{
Reachability* curReach = [note object];
NSParameterAssert([curReach isKindOfClass: [Reachability class]]);
BOOL internetConnection = [self checkInternetConnection];
if (internetConnection){
NSLog(@"connected");
}else {
NSLog(@"not connected");
}
}
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
[super viewDidLoad];
[[NSNotificationCenter defaultCenter] addObserver: self selector: @selector(reachabilityChanged:) name: kReachabilityChangedNotification object: nil];
BOOL internetConnection = [self checkInternetConnection];
if (internetConnection){
NSLog(@"connected");
}else {
NSLog(@"not connected");
}
}
