iOS下的WiFi开发-白红宇

iOS下的WiFi开发

阅读量：6154 次

发布时间：2019-06-21

本文共 2696 字，大约阅读时间需要 8 分钟。

　　iOS下Wi-Fi开发需要添加依赖库SystemConfiguration.framework，在需要使用Wi-Fi信息的控制器下引入头文件#import <SystemConfiguration/CaptiveNetwork.h>

　　1，Wi-Fi热点获取

+(NSString *) currentWifiSSID{#if TARGET_OS_SIMULATOR    return @"(simulator)";#else    NSArray *ifs = (__bridge id)CNCopySupportedInterfaces();    id info = nil;    for (NSString *ifnam in ifs) {        info = (__bridge id)CNCopyCurrentNetworkInfo((__bridge CFStringRef)ifnam);        if (info && [info count]) {            break;        }    }    NSDictionary *dctySSID = (NSDictionary *)info;    NSString *ssid = [dctySSID objectForKey:@"SSID"] ;    return ssid;#endif}

　　2，取得本机Wi-Fi的IP地址

#include 
     
      #include 
      
       #include 
       
        #include 
        
         #import 
         
          +(NSString *) localWiFiIPAddress{    BOOL success;    struct ifaddrs * addrs;    const struct ifaddrs * cursor;    success = getifaddrs(&addrs) == 0;    if (success) {        cursor = addrs;        while (cursor != NULL) {            // the second test keeps from picking up the loopback address            if (cursor->ifa_addr->sa_family == AF_INET && (cursor->ifa_flags & IFF_LOOPBACK) == 0)            {                NSString *name = [NSString stringWithUTF8String:cursor->ifa_name];                if ([name isEqualToString:@"en0"])  // Wi-Fi adapter                    return [NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *)cursor->ifa_addr)->sin_addr)];            }            cursor = cursor->ifa_next;        }        freeifaddrs(addrs);    }    return nil;}

　　3，获取当前Wi-Fi的名称

- (void)GetWifiName{NSString *wifiName = @"Not Found";CFArrayRef myArray = CNCopySupportedInterfaces();if (myArray != nil) {CFDictionaryRef myDict =CNCopyCurrentNetworkInfo(CFArrayGetValueAtIndex(myArray, 0));if (myDict != nil) {NSDictionary *dict = (NSDictionary*)CFBridgingRelease(myDict);wifiName = [dict valueForKey:@"SSID"];}NSLog(@"wifiName:%@", wifiName);}

　　注意：需要真机才能测试！模拟器下返回空。

　　4，打开系统设置

　　从应用跳到系统设置里的WiFi界面有这个需求存在吗？答案是肯定的。

　　在没有网的状态下，你可能想提醒用户去设置界面连接WiFi。如果不能跳到WiFi界面，只能在APP里面做出文字提示。这样很多小白用户可能不会看提示，只会觉得APP没有做好。

+(void)openSystemSetting:(NSString *)settingName{    //iOS8 才有效    float version = [[[UIDevice currentDevice] systemVersion] floatValue];#if __IPHONE_OS_VERSION_MAX_ALLOWED < __IPHONE_8_0#define SETTING_URL @"app-settings:"#else#define SETTING_URL   UIApplicationOpenSettingsURLString#endif    //  NSLog(UIApplicationOpenSettingsURLString);    if (version >= 8.0){        [[UIApplication sharedApplication] openURL:         [NSURL URLWithString:SETTING_URL]];    }}

UIApplication.sharedApplication().openURL(NSURL(string: "prefs:root=WIFI")!)

转载于:https://www.cnblogs.com/xjf125/p/5360550.html

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