iOS 获取当前网络模式

#import "ViewController.h"

#import <objc/message.h>

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    // 状态栏是由当前app控制的，首先获取当前app

    UIApplication *app = [UIApplication sharedApplication];

    

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

    int type = 0;

    for (id child in children) {

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

            

            type = [[child valueForKeyPath:@"dataNetworkType"] intValue];

        }

    }

    

    // 0 - 无网络; 1 - 2G; 2 - 3G; 3 - 4G; 5 - WIFI

    NSLog(@"value is %d", type);

}

@end