├── HLNetWorkReachability.xcodeproj
    ├── project.pbxproj
    ├── project.xcworkspace
    │   ├── contents.xcworkspacedata
    │   └── xcuserdata
    │   │   ├── haley.xcuserdatad
    │   │       └── UserInterfaceState.xcuserstate
    │   │   └── harvey.xcuserdatad
    │   │       └── UserInterfaceState.xcuserstate
    └── xcuserdata
    │   ├── haley.xcuserdatad
    │       └── xcschemes
    │       │   └── xcschememanagement.plist
    │   └── harvey.xcuserdatad
    │       └── xcschemes
    │           ├── HLNetWorkReachability.xcscheme
    │           └── xcschememanagement.plist
├── HLNetWorkReachability
    ├── AppDelegate.h
    ├── AppDelegate.m
    ├── Assets.xcassets
    │   └── AppIcon.appiconset
    │   │   └── Contents.json
    ├── Base.lproj
    │   ├── LaunchScreen.storyboard
    │   └── Main.storyboard
    ├── HLNetWorkReachability.h
    ├── HLNetWorkReachability.m
    ├── Info.plist
    ├── ViewController.h
    ├── ViewController.m
    └── main.m
└── README.md


/HLNetWorkReachability.xcodeproj/project.pbxproj:
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72 |       debugDocumentVersioning = "YES">
73 |       <BuildableProductRunnable
74 |          runnableDebuggingMode = "0">
75 |          <BuildableReference
76 |             BuildableIdentifier = "primary"
77 |             BlueprintIdentifier = "B9775BF21D35E89100407421"
78 |             BuildableName = "HLNetWorkReachability.app"
79 |             BlueprintName = "HLNetWorkReachability"
80 |             ReferencedContainer = "container:HLNetWorkReachability.xcodeproj">
81 |          </BuildableReference>
82 |       </BuildableProductRunnable>
83 |    </ProfileAction>
84 |    <AnalyzeAction
85 |       buildConfiguration = "Debug">
86 |    </AnalyzeAction>
87 |    <ArchiveAction
88 |       buildConfiguration = "Release"
89 |       revealArchiveInOrganizer = "YES">
90 |    </ArchiveAction>
91 | </Scheme>
92 | 


--------------------------------------------------------------------------------
/HLNetWorkReachability.xcodeproj/xcuserdata/harvey.xcuserdatad/xcschemes/xcschememanagement.plist:
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 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 3 | <plist version="1.0">
 4 | <dict>
 5 | 	<key>SchemeUserState</key>
 6 | 	<dict>
 7 | 		<key>HLNetWorkReachability.xcscheme</key>
 8 | 		<dict>
 9 | 			<key>orderHint</key>
10 | 			<integer>0</integer>
11 | 		</dict>
12 | 	</dict>
13 | 	<key>SuppressBuildableAutocreation</key>
14 | 	<dict>
15 | 		<key>B9775BF21D35E89100407421</key>
16 | 		<dict>
17 | 			<key>primary</key>
18 | 			<true/>
19 | 		</dict>
20 | 	</dict>
21 | </dict>
22 | </plist>
23 | 


--------------------------------------------------------------------------------
/HLNetWorkReachability/AppDelegate.h:
--------------------------------------------------------------------------------
 1 | //
 2 | //  AppDelegate.h
 3 | //  HLNetWorkReachability
 4 | //
 5 | //  Created by Harvey on 16/7/13.
 6 | //  Copyright © 2016年 Haley. All rights reserved.
 7 | //
 8 | 
 9 | #import <UIKit/UIKit.h>
10 | 
11 | @interface AppDelegate : UIResponder <UIApplicationDelegate>
12 | 
13 | @property (strong, nonatomic) UIWindow *window;
14 | 
15 | 
16 | @end
17 | 
18 | 


--------------------------------------------------------------------------------
/HLNetWorkReachability/AppDelegate.m:
--------------------------------------------------------------------------------
 1 | //
 2 | //  AppDelegate.m
 3 | //  HLNetWorkReachability
 4 | //
 5 | //  Created by Harvey on 16/7/13.
 6 | //  Copyright © 2016年 Haley. All rights reserved.
 7 | //
 8 | 
 9 | #import "AppDelegate.h"
10 | 
11 | #import "HLNetWorkReachability.h"
12 | 
13 | @interface AppDelegate ()
14 | 
15 | @property (nonatomic) HLNetWorkReachability *hostReachability;
16 | 
17 | @end
18 | 
19 | @implementation AppDelegate
20 | 
21 | 
22 | - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
23 |     // Override point for customization after application launch.
24 |     
25 |     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(reachabilityChanged:) name:kNetWorkReachabilityChangedNotification object:nil];
26 |     
27 |     HLNetWorkReachability *reachability = [HLNetWorkReachability reachabilityWithHostName:@"www.baidu.com"];
28 |     self.hostReachability = reachability;
29 |     [reachability startNotifier];
30 |     
31 |     return YES;
32 | }
33 | 
34 | - (void)reachabilityChanged:(NSNotification *)notification
35 | {
36 |     HLNetWorkReachability *curReach = [notification object];
37 |     HLNetWorkStatus netStatus = [curReach currentReachabilityStatus];
38 |     switch (netStatus) {
39 |         case HLNetWorkStatusNotReachable:
40 |             NSLog(@"网络不可用");
41 |             break;
42 |         case HLNetWorkStatusUnknown:
43 |             NSLog(@"未知网络");
44 |             break;
45 |         case HLNetWorkStatusWWAN2G:
46 |             NSLog(@"2G网络");
47 |             break;
48 |         case HLNetWorkStatusWWAN3G:
49 |             NSLog(@"3G网络");
50 |             break;
51 |         case HLNetWorkStatusWWAN4G:
52 |             NSLog(@"4G网络");
53 |             break;
54 |         case HLNetWorkStatusWiFi:
55 |             NSLog(@"WiFi");
56 |             break;
57 |             
58 |         default:
59 |             break;
60 |     }
61 | }
62 | 
63 | - (void)applicationWillResignActive:(UIApplication *)application {
64 |     // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
65 |     // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
66 | }
67 | 
68 | - (void)applicationDidEnterBackground:(UIApplication *)application {
69 |     // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
70 |     // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
71 | }
72 | 
73 | - (void)applicationWillEnterForeground:(UIApplication *)application {
74 |     // Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.
75 | }
76 | 
77 | - (void)applicationDidBecomeActive:(UIApplication *)application {
78 |     // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
79 | }
80 | 
81 | - (void)applicationWillTerminate:(UIApplication *)application {
82 |     // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
83 | }
84 | 
85 | @end
86 | 


--------------------------------------------------------------------------------
/HLNetWorkReachability/Assets.xcassets/AppIcon.appiconset/Contents.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "images" : [
 3 |     {
 4 |       "idiom" : "iphone",
 5 |       "size" : "29x29",
 6 |       "scale" : "2x"
 7 |     },
 8 |     {
 9 |       "idiom" : "iphone",
10 |       "size" : "29x29",
11 |       "scale" : "3x"
12 |     },
13 |     {
14 |       "idiom" : "iphone",
15 |       "size" : "40x40",
16 |       "scale" : "2x"
17 |     },
18 |     {
19 |       "idiom" : "iphone",
20 |       "size" : "40x40",
21 |       "scale" : "3x"
22 |     },
23 |     {
24 |       "idiom" : "iphone",
25 |       "size" : "60x60",
26 |       "scale" : "2x"
27 |     },
28 |     {
29 |       "idiom" : "iphone",
30 |       "size" : "60x60",
31 |       "scale" : "3x"
32 |     }
33 |   ],
34 |   "info" : {
35 |     "version" : 1,
36 |     "author" : "xcode"
37 |   }
38 | }


--------------------------------------------------------------------------------
/HLNetWorkReachability/Base.lproj/LaunchScreen.storyboard:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 2 | <document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="8150" systemVersion="15A204g" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" initialViewController="01J-lp-oVM">
 3 |     <dependencies>
 4 |         <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="8122"/>
 5 |     </dependencies>
 6 |     <scenes>
 7 |         <!--View Controller-->
 8 |         <scene sceneID="EHf-IW-A2E">
 9 |             <objects>
10 |                 <viewController id="01J-lp-oVM" sceneMemberID="viewController">
11 |                     <layoutGuides>
12 |                         <viewControllerLayoutGuide type="top" id="Llm-lL-Icb"/>
13 |                         <viewControllerLayoutGuide type="bottom" id="xb3-aO-Qok"/>
14 |                     </layoutGuides>
15 |                     <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
16 |                         <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
17 |                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
18 |                         <animations/>
19 |                         <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
20 |                     </view>
21 |                 </viewController>
22 |                 <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
23 |             </objects>
24 |             <point key="canvasLocation" x="53" y="375"/>
25 |         </scene>
26 |     </scenes>
27 | </document>
28 | 


--------------------------------------------------------------------------------
/HLNetWorkReachability/Base.lproj/Main.storyboard:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 2 | <document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="10116" systemVersion="15E65" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="BYZ-38-t0r">
 3 |     <dependencies>
 4 |         <deployment identifier="iOS"/>
 5 |         <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="10085"/>
 6 |     </dependencies>
 7 |     <scenes>
 8 |         <!--View Controller-->
 9 |         <scene sceneID="tne-QT-ifu">
10 |             <objects>
11 |                 <viewController id="BYZ-38-t0r" customClass="ViewController" sceneMemberID="viewController">
12 |                     <layoutGuides>
13 |                         <viewControllerLayoutGuide type="top" id="y3c-jy-aDJ"/>
14 |                         <viewControllerLayoutGuide type="bottom" id="wfy-db-euE"/>
15 |                     </layoutGuides>
16 |                     <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
17 |                         <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
18 |                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
19 |                         <subviews>
20 |                             <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Label" textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="k8Q-9o-iN8">
21 |                                 <rect key="frame" x="279" y="212" width="42" height="21"/>
22 |                                 <fontDescription key="fontDescription" type="system" pointSize="17"/>
23 |                                 <color key="textColor" cocoaTouchSystemColor="darkTextColor"/>
24 |                                 <nil key="highlightedColor"/>
25 |                             </label>
26 |                         </subviews>
27 |                         <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
28 |                         <constraints>
29 |                             <constraint firstItem="k8Q-9o-iN8" firstAttribute="top" secondItem="y3c-jy-aDJ" secondAttribute="bottom" constant="192" id="Fcl-tJ-DtB"/>
30 |                             <constraint firstItem="k8Q-9o-iN8" firstAttribute="centerX" secondItem="8bC-Xf-vdC" secondAttribute="centerX" id="ng6-yA-a9U"/>
31 |                         </constraints>
32 |                     </view>
33 |                     <connections>
34 |                         <outlet property="statusLabel" destination="k8Q-9o-iN8" id="PFL-hq-cF4"/>
35 |                     </connections>
36 |                 </viewController>
37 |                 <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
38 |             </objects>
39 |             <point key="canvasLocation" x="435" y="357"/>
40 |         </scene>
41 |     </scenes>
42 | </document>
43 | 


--------------------------------------------------------------------------------
/HLNetWorkReachability/HLNetWorkReachability.h:
--------------------------------------------------------------------------------
 1 | //
 2 | //  NetWorkReachability.h
 3 | //  SECC01
 4 | //
 5 | //  Created by Harvey on 16/6/29.
 6 | //  Copyright © 2016年 Haley. All rights reserved.
 7 | //
 8 | 
 9 | #import <Foundation/Foundation.h>
10 | 
11 | typedef NS_ENUM(NSUInteger, HLNetWorkStatus) {
12 |     HLNetWorkStatusNotReachable = 0,
13 |     HLNetWorkStatusUnknown = 1,
14 |     HLNetWorkStatusWWAN2G = 2,
15 |     HLNetWorkStatusWWAN3G = 3,
16 |     HLNetWorkStatusWWAN4G = 4,
17 |     HLNetWorkStatusWWAN5G = 5,
18 |     
19 |     HLNetWorkStatusWiFi = 9,
20 | };
21 | 
22 | extern NSString *kNetWorkReachabilityChangedNotification;
23 | 
24 | @interface HLNetWorkReachability : NSObject
25 | 
26 | /*!
27 |  * Use to check the reachability of a given host name.
28 |  */
29 | + (instancetype)reachabilityWithHostName:(NSString *)hostName;
30 | 
31 | /*!
32 |  * Use to check the reachability of a given IP address.
33 |  */
34 | + (instancetype)reachabilityWithAddress:(const struct sockaddr *)hostAddress;
35 | 
36 | /*!
37 |  * Checks whether the default route is available. Should be used by applications that do not connect to a particular host.
38 |  */
39 | + (instancetype)reachabilityForInternetConnection;
40 | 
41 | - (BOOL)startNotifier;
42 | 
43 | - (void)stopNotifier;
44 | 
45 | - (HLNetWorkStatus)currentReachabilityStatus;
46 | 
47 | @end
48 | 


--------------------------------------------------------------------------------
/HLNetWorkReachability/HLNetWorkReachability.m:
--------------------------------------------------------------------------------
  1 | //
  2 | //  NetWorkReachability.m
  3 | //  SECC01
  4 | //
  5 | //  Created by Harvey on 16/6/29.
  6 | //  Copyright © 2016年 Haley. All rights reserved.
  7 | //
  8 | #import <SystemConfiguration/SystemConfiguration.h>
  9 | #import <CoreTelephony/CTTelephonyNetworkInfo.h>
 10 | #import <UIKit/UIKit.h>
 11 | #import <netinet/in.h>
 12 | 
 13 | #import "HLNetWorkReachability.h"
 14 | 
 15 | NSString *kNetWorkReachabilityChangedNotification = @"kReachabilityChangedNotification";
 16 | 
 17 | static void ReachabilityCallback(SCNetworkReachabilityRef target, SCNetworkReachabilityFlags flags, void* info)
 18 | {
 19 |     HLNetWorkReachability *networkObject = (__bridge HLNetWorkReachability *)info;
 20 |     
 21 |     [[NSNotificationCenter defaultCenter] postNotificationName: kNetWorkReachabilityChangedNotification object:networkObject];
 22 | }
 23 | 
 24 | @implementation HLNetWorkReachability
 25 | {
 26 |     SCNetworkReachabilityRef _reachabilityRef;
 27 | }
 28 | 
 29 | + (instancetype)reachabilityWithHostName:(NSString *)hostName
 30 | {
 31 |     HLNetWorkReachability *returnValue = NULL;
 32 |     SCNetworkReachabilityRef reachability = SCNetworkReachabilityCreateWithName(NULL, [hostName UTF8String]);
 33 |     if (reachability != NULL) {
 34 |         returnValue = [[self alloc] init];
 35 |         if (returnValue != NULL) {
 36 |             returnValue->_reachabilityRef = reachability;
 37 |         } else {
 38 |             CFRelease(reachability);
 39 |         }
 40 |     }
 41 |     return returnValue;
 42 | }
 43 | 
 44 | + (instancetype)reachabilityWithAddress:(const struct sockaddr *)hostAddress
 45 | {
 46 |     SCNetworkReachabilityRef reachability = SCNetworkReachabilityCreateWithAddress(kCFAllocatorDefault, hostAddress);
 47 |     
 48 |     HLNetWorkReachability* returnValue = NULL;
 49 |     
 50 |     if (reachability != NULL)
 51 |     {
 52 |         returnValue = [[self alloc] init];
 53 |         if (returnValue != NULL)
 54 |         {
 55 |             returnValue->_reachabilityRef = reachability;
 56 |         }
 57 |         else {
 58 |             CFRelease(reachability);
 59 |         }
 60 |     }
 61 |     return returnValue;
 62 | }
 63 | 
 64 | + (instancetype)reachabilityForInternetConnection
 65 | {
 66 |     struct sockaddr_in zeroAddress;
 67 |     bzero(&zeroAddress, sizeof(zeroAddress));
 68 |     zeroAddress.sin_len = sizeof(zeroAddress);
 69 |     zeroAddress.sin_family = AF_INET;
 70 |     
 71 |     return [self reachabilityWithAddress: (const struct sockaddr *) &zeroAddress];
 72 | }
 73 | 
 74 | - (BOOL)startNotifier
 75 | {
 76 |     BOOL returnValue = NO;
 77 |     SCNetworkReachabilityContext context = {0, (__bridge void *)(self), NULL, NULL, NULL};
 78 |     
 79 |     if (SCNetworkReachabilitySetCallback(_reachabilityRef, ReachabilityCallback, &context)) {
 80 |         if (SCNetworkReachabilityScheduleWithRunLoop(_reachabilityRef, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode)) {
 81 |             returnValue = YES;
 82 |         }
 83 |     }
 84 |     return returnValue;
 85 | }
 86 | 
 87 | - (HLNetWorkStatus)currentReachabilityStatus
 88 | {
 89 |     HLNetWorkStatus returnValue = HLNetWorkStatusNotReachable;
 90 |     SCNetworkReachabilityFlags flags;
 91 |     if (SCNetworkReachabilityGetFlags(_reachabilityRef, &flags))
 92 |     {
 93 |         returnValue = [self networkStatusForFlags:flags];
 94 |     }
 95 |     
 96 |     return returnValue;
 97 | }
 98 | 
 99 | - (HLNetWorkStatus)networkStatusForFlags:(SCNetworkReachabilityFlags)flags
100 | {
101 |     if ((flags & kSCNetworkReachabilityFlagsReachable) == 0)
102 |     {
103 |         // The target host is not reachable.
104 |         return HLNetWorkStatusNotReachable;
105 |     }
106 |     
107 |     HLNetWorkStatus returnValue = HLNetWorkStatusNotReachable;
108 |     if ((flags & kSCNetworkReachabilityFlagsConnectionRequired) == 0)
109 |     {
110 |         /*
111 |          If the target host is reachable and no connection is required then we'll assume (for now) that you're on Wi-Fi...
112 |          */
113 |         returnValue = HLNetWorkStatusWiFi;
114 |     }
115 |     
116 |     if ((((flags & kSCNetworkReachabilityFlagsConnectionOnDemand ) != 0) ||
117 |          (flags & kSCNetworkReachabilityFlagsConnectionOnTraffic) != 0))
118 |     {
119 |         /*
120 |          ... and the connection is on-demand (or on-traffic) if the calling application is using the CFSocketStream or higher APIs...
121 |          */
122 |         
123 |         if ((flags & kSCNetworkReachabilityFlagsInterventionRequired) == 0)
124 |         {
125 |             /*
126 |              ... and no [user] intervention is needed...
127 |              */
128 |             returnValue = HLNetWorkStatusWiFi;
129 |         }
130 |     }
131 |     
132 |     if ((flags & kSCNetworkReachabilityFlagsIsWWAN) == kSCNetworkReachabilityFlagsIsWWAN)
133 |     {
134 |         /*
135 |          ... but WWAN connections are OK if the calling application is using the CFNetwork APIs.
136 |          */
137 |         NSArray *typeStrings2G = @[CTRadioAccessTechnologyEdge,
138 |                            CTRadioAccessTechnologyGPRS,
139 |                            CTRadioAccessTechnologyCDMA1x];
140 |         
141 |         NSArray *typeStrings3G = @[CTRadioAccessTechnologyHSDPA,
142 |                            CTRadioAccessTechnologyWCDMA,
143 |                            CTRadioAccessTechnologyHSUPA,
144 |                            CTRadioAccessTechnologyCDMAEVDORev0,
145 |                            CTRadioAccessTechnologyCDMAEVDORevA,
146 |                            CTRadioAccessTechnologyCDMAEVDORevB,
147 |                            CTRadioAccessTechnologyeHRPD];
148 |         
149 |         NSArray *typeStrings4G = @[CTRadioAccessTechnologyLTE];
150 |         
151 |         NSArray *typeStrings5G = @[];
152 |         if(@available(iOS 14.0, *)){
153 |             typeStrings5G = @[CTRadioAccessTechnologyNRNSA,CTRadioAccessTechnologyNR];
154 |         }
155 | 
156 |         if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7.0) {
157 |             CTTelephonyNetworkInfo *teleInfo= [[CTTelephonyNetworkInfo alloc] init];
158 |             NSString *accessString = teleInfo.currentRadioAccessTechnology;
159 |             if ([typeStrings5G containsObject:accessString]) {
160 |                 return HLNetWorkStatusWWAN5G;
161 |             } else if ([typeStrings4G containsObject:accessString]) {
162 |                 return HLNetWorkStatusWWAN4G;
163 |             } else if ([typeStrings3G containsObject:accessString]) {
164 |                 return HLNetWorkStatusWWAN3G;
165 |             } else if ([typeStrings2G containsObject:accessString]) {
166 |                 return HLNetWorkStatusWWAN2G;
167 |             } else {
168 |                 return HLNetWorkStatusUnknown;
169 |             }
170 |         } else {
171 |             return HLNetWorkStatusUnknown;
172 |         }
173 |     }
174 | 
175 |     return returnValue;
176 | }
177 | 
178 | - (void)stopNotifier
179 | {
180 |     if (_reachabilityRef != NULL)
181 |     {
182 |         SCNetworkReachabilityUnscheduleFromRunLoop(_reachabilityRef, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode);
183 |     }
184 | }
185 | 
186 | - (void)dealloc
187 | {
188 |     [self stopNotifier];
189 |     if (_reachabilityRef != NULL)
190 |     {
191 |         CFRelease(_reachabilityRef);
192 |     }
193 | }
194 | 
195 | 
196 | @end
197 | 


--------------------------------------------------------------------------------
/HLNetWorkReachability/Info.plist:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 3 | <plist version="1.0">
 4 | <dict>
 5 | 	<key>CFBundleDevelopmentRegion</key>
 6 | 	<string>en</string>
 7 | 	<key>CFBundleExecutable</key>
 8 | 	<string>$(EXECUTABLE_NAME)</string>
 9 | 	<key>CFBundleIdentifier</key>
10 | 	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
11 | 	<key>CFBundleInfoDictionaryVersion</key>
12 | 	<string>6.0</string>
13 | 	<key>CFBundleName</key>
14 | 	<string>$(PRODUCT_NAME)</string>
15 | 	<key>CFBundlePackageType</key>
16 | 	<string>APPL</string>
17 | 	<key>CFBundleShortVersionString</key>
18 | 	<string>1.0</string>
19 | 	<key>CFBundleSignature</key>
20 | 	<string>????</string>
21 | 	<key>CFBundleVersion</key>
22 | 	<string>1</string>
23 | 	<key>LSRequiresIPhoneOS</key>
24 | 	<true/>
25 | 	<key>UILaunchStoryboardName</key>
26 | 	<string>LaunchScreen</string>
27 | 	<key>UIMainStoryboardFile</key>
28 | 	<string>Main</string>
29 | 	<key>UIRequiredDeviceCapabilities</key>
30 | 	<array>
31 | 		<string>armv7</string>
32 | 	</array>
33 | 	<key>UISupportedInterfaceOrientations</key>
34 | 	<array>
35 | 		<string>UIInterfaceOrientationPortrait</string>
36 | 		<string>UIInterfaceOrientationLandscapeLeft</string>
37 | 		<string>UIInterfaceOrientationLandscapeRight</string>
38 | 	</array>
39 | </dict>
40 | </plist>
41 | 


--------------------------------------------------------------------------------
/HLNetWorkReachability/ViewController.h:
--------------------------------------------------------------------------------
 1 | //
 2 | //  ViewController.h
 3 | //  HLNetWorkReachability
 4 | //
 5 | //  Created by Harvey on 16/7/13.
 6 | //  Copyright © 2016年 Haley. All rights reserved.
 7 | //
 8 | 
 9 | #import <UIKit/UIKit.h>
10 | 
11 | @interface ViewController : UIViewController
12 | 
13 | 
14 | @end
15 | 
16 | 


--------------------------------------------------------------------------------
/HLNetWorkReachability/ViewController.m:
--------------------------------------------------------------------------------
 1 | //
 2 | //  ViewController.m
 3 | //  HLNetWorkReachability
 4 | //
 5 | //  Created by Harvey on 16/7/13.
 6 | //  Copyright © 2016年 Haley. All rights reserved.
 7 | //
 8 | 
 9 | #import "ViewController.h"
10 | #import "HLNetWorkReachability.h"
11 | 
12 | @interface ViewController ()
13 | 
14 | @property (weak, nonatomic) IBOutlet UILabel *statusLabel;
15 | 
16 | @end
17 | 
18 | @implementation ViewController
19 | 
20 | - (void)viewDidLoad {
21 |     [super viewDidLoad];
22 |     // Do any additional setup after loading the view, typically from a nib.
23 |     
24 |      [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(reachabilityChanged:) name:kNetWorkReachabilityChangedNotification object:nil];
25 | }
26 | 
27 | - (void)reachabilityChanged:(NSNotification *)notification
28 | {
29 |     HLNetWorkReachability *curReach = [notification object];
30 |     HLNetWorkStatus netStatus = [curReach currentReachabilityStatus];
31 |     switch (netStatus) {
32 |         case HLNetWorkStatusNotReachable:
33 |             self.statusLabel.text = @"网络不可用";
34 |             break;
35 |         case HLNetWorkStatusUnknown:
36 |             self.statusLabel.text = @"未知网络";
37 |             break;
38 |         case HLNetWorkStatusWWAN2G:
39 |             self.statusLabel.text = @"2G网络";
40 |             break;
41 |         case HLNetWorkStatusWWAN3G:
42 |             self.statusLabel.text = @"3G网络";
43 |             break;
44 |         case HLNetWorkStatusWWAN4G:
45 |             self.statusLabel.text = @"4G网络";
46 |             break;
47 |         case HLNetWorkStatusWWAN5G:
48 |             self.statusLabel.text = @"5G网络";
49 |             break;
50 |         case HLNetWorkStatusWiFi:
51 |             self.statusLabel.text = @"WiFi";
52 |             break;
53 |             
54 |         default:
55 |             break;
56 |     }
57 | }
58 | 
59 | 
60 | @end
61 | 


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/HLNetWorkReachability/main.m:
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 1 | //
 2 | //  main.m
 3 | //  HLNetWorkReachability
 4 | //
 5 | //  Created by Harvey on 16/7/13.
 6 | //  Copyright © 2016年 Haley. All rights reserved.
 7 | //
 8 | 
 9 | #import <UIKit/UIKit.h>
10 | #import "AppDelegate.h"
11 | 
12 | int main(int argc, char * argv[]) {
13 |     @autoreleasepool {
14 |         return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
15 |     }
16 | }
17 | 


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/README.md:
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  1 | # HLNetWorkReachability
  2 | Reachability 已经升级了，新版的Reachability已经支持IPv6了。<br>
  3 | 我是在新版的Reachability上做了改进，主要是判断网络环境2G/3G/4G/WiFi等。
  4 | 
  5 | # 使用到的系统库
  6 | ```
  7 | #import <SystemConfiguration/SystemConfiguration.h>
  8 | #import <CoreTelephony/CTTelephonyNetworkInfo.h>
  9 | #import <netinet/in.h>
 10 | ```
 11 | 
 12 | #  改进
 13 | 1、扩展了原来网络环境的枚举类型
 14 | ```
 15 | typedef NS_ENUM(NSUInteger, HLNetWorkStatus) {
 16 |     HLNetWorkStatusNotReachable = 0,
 17 |     HLNetWorkStatusUnknown = 1,
 18 |     HLNetWorkStatusWWAN2G = 2,
 19 |     HLNetWorkStatusWWAN3G = 3,
 20 |     HLNetWorkStatusWWAN4G = 4,
 21 | 
 22 |     HLNetWorkStatusWiFi = 9,
 23 | };
 24 | ```
 25 | 2、修改了原来的网络粗略判断
 26 | ```
 27 | - (HLNetWorkStatus)networkStatusForFlags:(SCNetworkReachabilityFlags)flags
 28 | {
 29 |     if ((flags & kSCNetworkReachabilityFlagsReachable) == 0)
 30 |     {
 31 |         // The target host is not reachable.
 32 |         return HLNetWorkStatusNotReachable;
 33 |     }
 34 | 
 35 |     HLNetWorkStatus returnValue = HLNetWorkStatusNotReachable;
 36 |     if ((flags & kSCNetworkReachabilityFlagsConnectionRequired) == 0)
 37 |     {
 38 |         /*
 39 |          If the target host is reachable and no connection is required then we'll assume (for now) that you're on Wi-Fi...
 40 |          */
 41 |         returnValue = HLNetWorkStatusWiFi;
 42 |     }
 43 | 
 44 |     if ((((flags & kSCNetworkReachabilityFlagsConnectionOnDemand ) != 0) ||
 45 |          (flags & kSCNetworkReachabilityFlagsConnectionOnTraffic) != 0))
 46 |     {
 47 |         /*
 48 |          ... and the connection is on-demand (or on-traffic) if the calling application is using the CFSocketStream or higher APIs...
 49 |          */
 50 | 
 51 |         if ((flags & kSCNetworkReachabilityFlagsInterventionRequired) == 0)
 52 |         {
 53 |             /*
 54 |              ... and no [user] intervention is needed...
 55 |              */
 56 |             returnValue = HLNetWorkStatusWiFi;
 57 |         }
 58 |     }
 59 | 
 60 |     if ((flags & kSCNetworkReachabilityFlagsIsWWAN) == kSCNetworkReachabilityFlagsIsWWAN)
 61 |     {
 62 |         /*
 63 |          ... but WWAN connections are OK if the calling application is using the CFNetwork APIs.
 64 |          */
 65 |         NSArray *typeStrings2G = @[CTRadioAccessTechnologyEdge,
 66 |                            CTRadioAccessTechnologyGPRS,
 67 |                            CTRadioAccessTechnologyCDMA1x];
 68 | 
 69 |         NSArray *typeStrings3G = @[CTRadioAccessTechnologyHSDPA,
 70 |                            CTRadioAccessTechnologyWCDMA,
 71 |                            CTRadioAccessTechnologyHSUPA,
 72 |                            CTRadioAccessTechnologyCDMAEVDORev0,
 73 |                            CTRadioAccessTechnologyCDMAEVDORevA,
 74 |                            CTRadioAccessTechnologyCDMAEVDORevB,
 75 |                            CTRadioAccessTechnologyeHRPD];
 76 | 
 77 |         NSArray *typeStrings4G = @[CTRadioAccessTechnologyLTE];
 78 | 
 79 |         if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7.0) {
 80 |             CTTelephonyNetworkInfo *teleInfo= [[CTTelephonyNetworkInfo alloc] init];
 81 |             NSString *accessString = teleInfo.currentRadioAccessTechnology;
 82 |             if ([typeStrings4G containsObject:accessString]) {
 83 |                 return HLNetWorkStatusWWAN4G;
 84 |             } else if ([typeStrings3G containsObject:accessString]) {
 85 |                 return HLNetWorkStatusWWAN3G;
 86 |             } else if ([typeStrings2G containsObject:accessString]) {
 87 |                 return HLNetWorkStatusWWAN2G;
 88 |             } else {
 89 |                 return HLNetWorkStatusUnknown;
 90 |             }
 91 |         } else {
 92 |             return HLNetWorkStatusUnknown;
 93 |         }
 94 |     }
 95 | 
 96 |     return returnValue;
 97 | }
 98 | ```
 99 | 
100 | # 用法
101 | 还是原来那个用法
102 | ```
103 | [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(reachabilityChanged:) name:kNetWorkReachabilityChangedNotification object:nil];
104 | 
105 | HLNetWorkReachability *reachability = [HLNetWorkReachability reachabilityWithHostName:@"www.baidu.com"];
106 | self.hostReachability = reachability;
107 | [reachability startNotifier];
108 | 
109 | ```
110 | 
111 | 有什么问题或者建议可以联系我。
112 | 
113 | 


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