iphone最牛判断当前手机网络连接类型wifi-2G-3G-4G-5G

http://www.xmsdn.net/iso/iphone-wifi-2g-3g-4g/

////  网络类型

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typedef enum {

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    NETWORK_TYPE_NONE= 0,

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    NETWORK_TYPE_2G= 1,

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    NETWORK_TYPE_3G= 2,

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    NETWORK_TYPE_4G= 3,

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    NETWORK_TYPE_5G= 4,//  5G目前为猜测结果

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    NETWORK_TYPE_WIFI= 5,

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}NETWORK_TYPE;

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+(NETWORK_TYPE)getNetworkTypeFromStatusBar {

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    UIApplication *app = [UIApplication sharedApplication];

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    NSArray *subviews = [[[app valueForKey:@"statusBar"] valueForKey:@"foregroundView"] subviews];

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    NSNumber *dataNetworkItemView = nil;

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for (id subview in subviews) {

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  if([subview isKindOfClass:[NSClassFromString(@"UIStatusBarDataNetworkItemView") class]])     {

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            dataNetworkItemView = subview;

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            break;

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        }

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    }

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    NETWORK_TYPE nettype = NETWORK_TYPE_NONE;

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    NSNumber * num = [dataNetworkItemView valueForKey:@"dataNetworkType"];

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    nettype = [num intValue];

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    return nettype;

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}