iOS监控网络状态并实时刷新界面数据

前言

APP项目中须要实时的检测网络状态是必须的，并且检测的框架不少如Reachability、AFNetworking以及RealReachability，本文所写的内容是采用RealReachability，今天内容的重点并非实时监控网络状态变化，而是检测到网络变化实时刷新界面数据。

 

框架设计；

（1）不可或缺的网络状态监控以及网络状态保存，每次网络发生改变都发出通知；

（2）在基类XPQBaseViewController里面接收广播通知，经过传递过来的网络状态作相应的逻辑处理。

 

如何使用；

（1）封装好的网络监测单例类，每次网络发生改变，都会发出kLocalNetWorkChagnedNotofication通知；代码中的hasNet属性最好放在其余的单例类中，好比系统配置类AppContext等。

#import <Foundation/Foundation.h>

@interface NetWorkUtils : NSObject

+ (instancetype)sharedNetWorkUtils;

- (void)autoCheckNetWork;

@end


#import "NetWorkUtils.h"
#import <RealReachability.h>
#import "GlobeConst.h"

@interface NetWorkUtils ()

@property (nonatomic, assign) BOOL hasNet;

@end

@implementation NetWorkUtils

+ (instancetype)sharedNetWorkUtils
{
    static dispatch_once_t onceNetWorkToken;
    static NetWorkUtils *netWorkUtils;
    
    dispatch_once(& onceNetWorkToken, ^{
        netWorkUtils = [[NetWorkUtils alloc] init];
    });
    return netWorkUtils;
}

- (void)autoCheckNetWork
{
    [GLobalRealReachability startNotifier];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(networkChanged:) name:kRealReachabilityChangedNotification object:nil];
}

- (void)networkChanged:(NSNotification *)notification
{
    RealReachability *reachability = (RealReachability *)notification.object;
    ReachabilityStatus status = [reachability currentReachabilityStatus];
    
    switch (status) {
        case RealStatusNotReachable: {
            self.hasNet = NO;
            [[NSNotificationCenter defaultCenter] postNotificationName:NSLocalNetWorkChagnedNotoficationKey object:nil userInfo:@{
                                                                                                           @"netType": @"RealStatusNotReachable"
                                                                                                           }];
            break;
        }
        case RealStatusUnknown: {
            self.hasNet = YES;
            [[NSNotificationCenter defaultCenter] postNotificationName:NSLocalNetWorkChagnedNotoficationKey object:nil userInfo:@{
                                                                                                           @"netType": @"RealStatusUnknown"
                                                                                                           }];
            break;
        }
        case RealStatusViaWiFi: {
            self.hasNet = YES;
            [[NSNotificationCenter defaultCenter] postNotificationName:NSLocalNetWorkChagnedNotoficationKey object:nil userInfo:@{
                                                                                @"netType": @"RealStatusViaWiFi"                                                           }];
            break;
        }
        case RealStatusViaWWAN: {
            self.hasNet = YES;
            [[NSNotificationCenter defaultCenter] postNotificationName:NSLocalNetWorkChagnedNotoficationKey object:nil userInfo:@{
                                                                                                           @"netType": @"RealStatusViaWWAN"                                                            }];
            break;
        }
        default:
            break;
    }
}

@end

 

（2）公共基类XPQBaseViewController，接收kLocalNetWorkChagnedNotofication通知，并执行- (void)refreshLoadDataBase:(NSNotification *)notification方法；子类经过继承XPQBaseViewController结合业务需求在refreshLoadDataBase方法中，实现相应的业务逻辑。

#import <UIKit/UIKit.h>

@interface XPQBaseViewController : UIViewController

- (void)refreshLoadDataBase:(NSNotification *)notification;

@end


#import "XPQBaseViewController.h"
#import "GlobeConst.h"

@interface XPQBaseViewController ()

@end

@implementation XPQBaseViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(refreshLoadDataBase:) name:NSLocalNetWorkChagnedNotoficationKey object:nil];
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (void)refreshLoadDataBase:(NSNotification *)notification {
    
    NSLog(@"开始从新加载网络数据");
}

- (void)dealloc {
    
    [[NSNotificationCenter defaultCenter] removeObserver:self name:NSLocalNetWorkChagnedNotoficationKey object:nil];
}

@end

 

总结；

RealReachability检测网络状态框架除了自动检测，其实还能够手动检测，对于有在发起网络请求时须要实时检测网络链接状况的业务需求，RealReachability使用是比较方便的。