Runtime获取网络状态

来源：互联网发布：少见的姓氏知乎编辑：程序博客网时间：2024/05/29 04:48
获取网络状态的方法有两种。这是我觉得比较方便的一种。还有一种是结合RunLoop去做的，不过那种要导入其他头文件。用起来也是一样。
////  ViewController.m//  Runtime获取当前网络状态////  Created by 陆巧怡 on 15/8/4.//  Copyright (c) 2015年 Simon. All rights reserved.//#import "ViewController.h"#import <objc/message.h>@interface ViewController ()@end@implementation ViewController- (void)viewDidLoad {    [super viewDidLoad];        [self takeOutThestatusBar];}#pragma 找到状态栏-(void)findStatusBar{        //获取当前的app    UIApplication *app = [UIApplication sharedApplication];    //遍历当前app的所有属性 找到关于状态栏的属性    unsigned int outCount = 0;    Ivar *ivars = class_copyIvarList([app class], &outCount);    for (int i =0; i<outCount; i++) {        Ivar ivar = ivars[i];        const char *name = ivar_getName(ivar);        NSString *propertyName = [NSString stringWithCString:name encoding:NSUTF8StringEncoding];        if ([propertyName isEqualToString:@"_statusBar"]) {            NSLog(@"状态栏");        }    }}#pragma 通过KVC找出状态栏-(void)takeOutThestatusBar{        //获取当前的app    UIApplication *app = [UIApplication sharedApplication];    //通过KVC获取到当前APP的状态栏    id statusBar = [app valueForKey:@"statusBar"];    NSArray *childensArray = [[statusBar valueForKeyPath:@"foregroundView"] subviews];    //NSLog(@"%@",childensArray);    /*     UIStatusBarServiceItemView     UIStatusBarDataNetworkItemView     UIStatusBarBatteryItemView     UIStatusBarTimeItemView     */        int netWorkType = 0;    for (id child in childensArray) {                if ([child isKindOfClass:NSClassFromString(@"UIStatusBarDataNetworkItemView")]) {            unsigned int outCount = 0;            Ivar *ivars = class_copyIvarList([child class], &outCount);                        for (int i =0; i<outCount; i++) {                                Ivar ivar = ivars[i];                const char *ivarName = ivar_getName(ivar);                /*                 dataNetworkType  0 - 无网络 ; 1 - 2G ; 2 - 3G ; 3 - 4G ; 5 - WIFI;                 wifiStrengthRaw                 wifiStrengthBars                 enableRSSI                 showRSSI                 */                //NSString * propertyName=[NSString stringWithCString:ivarName encoding:NSUTF8StringEncoding];                //网络状态                netWorkType = [[child valueForKey:@"dataNetworkType"] intValue];            }        }    }        switch (netWorkType) {        case 0:            NSLog(@"无网络");            break;        case 1:            NSLog(@"2G网络");            break;        case 2:            NSLog(@"3G网络");            break;        case 3:            NSLog(@"4G网络");            break;        case 5:            NSLog(@"WIFI网络");            break;        default:            break;    }            }- (void)didReceiveMemoryWarning {    [super didReceiveMemoryWarning];}@end
0 0