Monitoring network status of iOS development

I. Description

In the network application, the network status of the user device needs to be monitored in real time for two purposes:

(1) Let users know their network status, to prevent some misunderstandings (such as the application of incompetence)

(2) According to the user's network status intelligent processing, save user traffic, improve the user experience

WIFI\3G network: Automatically download HD images

Low-speed network: Download thumbnails only

No network: Show only cached data that is offline

Apple officially provides a sample program called Reachability, which allows developers to detect network status

Https://developer.apple.com/library/ios/samplecode/Reachability/Reachability.zip

Second, monitoring network status

Reachability Steps to use

Add Frame Systemconfiguration.framework

Add source code

　

Include header file

#import "Reachability.h"

code example:

1#import"YYViewController.h"2#import"Reachability.h"34@interfaceYyviewcontroller ()5 @property (nonatomic, strong) reachability *Conn6@end78@implementationYyviewcontroller910-(void) Viewdidload11{12[Super Viewdidload];13[[Nsnotificationcenter Defaultcenter] addobserver:self selector: @selector (networkstatechange) Name: KreachabilitychangednotificationObject: nil];Self.conn =[Reachability reachabilityforinternetconnection];16[Self.conn Startnotifier];17}1819-(void) Dealloc20{21st[Self.conn Stopnotifier];22[[Nsnotificationcenter Defaultcenter] removeobserver:self];23}2425-(void) Networkstatechange26{27[Self checknetworkstate];28}2930-(void) Touchesbegan: (Nsset *) touches withevent: (Uievent *)Event31{3233}3435-(void) checknetworkstate36{37//1. Detect WiFi Statusreachability *wifi =[Reachability Reachabilityforlocalwifi];3940//2. Check whether the mobile phone can be on the network (wifi\3g\2.5g)reachability *conn =[Reachability reachabilityforinternetconnection];4243//3. Determine network status44if ([WiFi currentreachabilitystatus]! = notreachable) {//Have WiFiNSLog (@"Have WiFi");4647}Elseif ([conn currentreachabilitystatus]! = notreachable) {//No WiFi, Internet access using your phone's own networkNSLog (@"Use your phone to bring your own network to the Internet");4950}else {//No network51NSLog (@"No network");53}54}55@end5657//With WiFi58//[WiFi currentreachabilitystatus]! = notreachable59//[Conn Currentreachabilitystatus]! = notreachable60 61 // No wifi, only use the mobile network 62 //63 //< Span style= "color: #008000;" > [conn Currentreachabilitystatus]! = Notreachable64 65 // no network 66 // [WiFi currentreachabilitystatus] = = Notreachable67 // [conn Currentreachabilitystatus] = = notreachable  

Monitoring network status of iOS development