直接读取状态栏上信息获取网络状态－可以扩展获取电量运营商等信息
-(NSString *)getNetWorkStates{
UIApplication *app = [UIApplication sharedApplication];
NSArray *children = [[[app valueForKeyPath:@"statusBar"]valueForKeyPath:@"foregroundView"]subviews];
NSString *state = nil;
int netType = 0;
for (id child in children) {
if ([child isKindOfClass:NSClassFromString(@"UIStatusBarDataNetworkItemView")]) {
netType = [[child valueForKeyPath:@"dataNetworkType"]intValue];
switch (netType) {
case 0:
state = @"无网络";
break;
case 1:
state = @"2G";
break;
case 2:
state = @"3G";
break;
case 3:
state = @"4G";
break;
case 5:
state = @"WIFI";
break;
default:
break;
}
}
}
return state;
}