iPhone中如何判断当前的连接是什么网络（2G,3G,4G）
请问iOS开发中，如何判断当前用户使用的网络类型，是2G（GSM）、3G还是4G的，这个如何判断？
谢谢了。
注意：不是判断 WWAN与WIFI，是要判断具体的网络类型，要做统计用。
townleo
12 years, 7 months ago
Answers
如果是IOS7，你可以使用CTTelephonyNetworkInfo
CTTelephonyNetworkInfo *telephonyInfo = [CTTelephonyNetworkInfo new];
NSLog(@"Current Radio Access Technology: %@", telephonyInfo.currentRadioAccessTechnology);
[NSNotificationCenter.defaultCenter addObserverForName:CTRadioAccessTechnologyDidChangeNotification
object:nil
queue:nil
usingBlock:^(NSNotification *note)
{
NSLog(@"New Radio Access Technology: %@", telephonyInfo.currentRadioAccessTechnology);
}];
下面这个代码可以帮助你侦测不同连接：
- (BOOL)isFast:(NSString*)radioAccessTechnology {
if ([radioAccessTechnology isEqualToString:CTRadioAccessTechnologyGPRS]) {
return NO;
} else if ([radioAccessTechnology isEqualToString:CTRadioAccessTechnologyEdge]) {
return NO;
} else if ([radioAccessTechnology isEqualToString:CTRadioAccessTechnologyWCDMA]) {
return YES;
} else if ([radioAccessTechnology isEqualToString:CTRadioAccessTechnologyHSDPA]) {
return YES;
} else if ([radioAccessTechnology isEqualToString:CTRadioAccessTechnologyHSUPA]) {
return YES;
} else if ([radioAccessTechnology isEqualToString:CTRadioAccessTechnologyCDMA1x]) {
return YES;
} else if ([radioAccessTechnology isEqualToString:CTRadioAccessTechnologyCDMAEVDORev0]) {
return YES;
} else if ([radioAccessTechnology isEqualToString:CTRadioAccessTechnologyCDMAEVDORevA]) {
return YES;
} else if ([radioAccessTechnology isEqualToString:CTRadioAccessTechnologyCDMAEVDORevB]) {
return YES;
} else if ([radioAccessTechnology isEqualToString:CTRadioAccessTechnologyeHRPD]) {
return YES;
} else if ([radioAccessTechnology isEqualToString:CTRadioAccessTechnologyLTE]) {
return YES;
}
return YES;
}
西行寺丶幽幽子
answered 10 years, 4 months ago