ios之好用的Reachability

#import <Foundation/Foundation.h>

@interface NetWorkTool : NSObject

+ (instancetype)shareInstance;

- (void)startListing;

@end

#import "NetWorkTool.h"

@import Reachability;

@interface NetWorkTool()

@property (nonatomic) Reachability *hostReachability;

@property (nonatomic) Reachability *internetReachability;

@end

@implementation NetWorkTool

static NetWorkTool *tool = nil;

+(instancetype)shareInstance

{

static dispatch_once_t onceToken;

dispatch_once(&onceToken, ^{

tool = [[NetWorkTool alloc]init];

});

return tool;

}

- (void)startListing

{

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(reachabilityChanged:) name:kReachabilityChangedNotification object:nil];

NSString *remoteHostName = @"www.apple.com";

self.hostReachability = [Reachability reachabilityWithHostName:remoteHostName];

[self.hostReachability startNotifier];

[self updateInterfaceWithReachability:self.hostReachability];

self.internetReachability = [Reachability reachabilityForInternetConnection];

[self.internetReachability startNotifier];

[self updateInterfaceWithReachability:self.internetReachability];

}

- (void) reachabilityChanged:(NSNotification *)note

{

Reachability* curReach = [note object];

NSParameterAssert([curReach isKindOfClass:[Reachability class]]);

[self updateInterfaceWithReachability:curReach];

}

- (void)updateInterfaceWithReachability:(Reachability *)reachability

{

if (reachability == self.internetReachability)

{

[self configureReachability:reachability];

}

}

- (void)configureReachability:(Reachability *)reachability

{

NetworkStatus netStatus = [reachability currentReachabilityStatus];

BOOL connectionRequired = [reachability connectionRequired];

switch (netStatus)

{

case NotReachable:        {

NSLog(@"没有网络");

connectionRequired = NO;

break;

}

case ReachableViaWWAN:        {

NSLog(@"手机自带网络");

break;

}

case ReachableViaWiFi:        {

NSLog(@"wifi网络");

break;

}

}

}

- (void)dealloc

{

[[NSNotificationCenter defaultCenter] removeObserver:self name:kReachabilityChangedNotification object:nil];

}

@end

#define NetWorkManager   [NetWorkTool shareInstance]

[NetWorkManager startListing];

didFinishLaunchingWithOptions中调用即可 全局可以监听