使用之前請從Apple網(wǎng)站下載示例:https://developer.apple.com/library/ios/samplecode/Reachability/Reachability.zip
然后將Reachability.h 和 Reachability.m 加到自己的項(xiàng)目中,并引用 SystemConfiguration.framework,就可以使用了。
Reachability 中定義了3種網(wǎng)絡(luò)狀態(tài):
// 是否wifi
+ (BOOL) IsEnableWIFI {
return ([[Reachability reachabilityForLocalWiFi] currentReachabilityStatus] != NotReachable);
}
// 是否3G
+ (BOOL) IsEnable3G {
return ([[Reachability reachabilityForInternetConnection] currentReachabilityStatus] != NotReachable);
}
// 有無網(wǎng)絡(luò)訪問
if ([[Reachability reachabilityForLocalWiFi] currentReachabilityStatus] == NotReachable && [[Reachability reachabilityForInternetConnection] currentReachabilityStatus] == NotReachable) {
NSLog(@"無網(wǎng)絡(luò)訪問,請檢查是否連接網(wǎng)絡(luò)!");
}