iOS获取设备的网络状态(刘海屏可用)
前言
小编最近在项目中遇到了一个问题,除刘海屏以外的iOS设备可以正常的搜索到硬件设备,但是刘海屏就不行。因此,小编花了一点时间研究了一下iOS设备获取当前设备的网络状态。
实现
因为iOS的系统是封闭的,所以是没有直接的APi去获取当前的网络状态。但是道高一尺,魔高一尺。开发者总会有办法获取自己想要的东西。
1.一般设备下的网络状态获取
获取当前的网络类型
获取当前的网络类型是通过获取状态栏,然后遍历状态栏的视图完成的。
先导入头文件,如下:
#import "AppDelegate.h"
实现方法如下:
+ (NSString *)getNetworkType
{
UIApplication *app = [UIApplication sharedApplication];
NSArray *subviews = [[[app valueForKeyPath:@"statusBar"] valueForKeyPath:@"foregroundView"] subviews];
NSString *network = @"";
for (id subview in subviews) {
if ([subview isKindOfClass:NSClassFromString(@"UIStatusBarDataNetworkItemView")]) {
int networkType = [[subview valueForKeyPath:@"dataNetworkType"] intValue];
switch (networkType) {
case 0:
network = @"NONE";
break;
case 1:
network = @"2G";
break;
case 2:
network = @"3G";
break;
case 3:
network = @"4G";
break;
case 5:
network = @"WIFI";
break;
default:
break;
}
}
}
if ([network isEqualToString:@""]) {
network = @"NO DISPLAY";
}
return network;
}
获取当前的Wifi信息
获取当前的Wifi信息需要借助系统的SystemConfiguration这个库。
先导入头文件,如下:
#import <SystemConfiguration/CaptiveNetwork.h>
实现方法如下:
#pragma mark 获取Wifi信息
+ (id)fetchSSIDInfo
{
NSArray *ifs = (__bridge_transfer id)CNCopySupportedInterfaces();
id info = nil;
for (NSString *ifnam in ifs) {
info = (__bridge_transfer id)CNCopyCurrentNetworkInfo((__bridge CFStringRef)ifnam);
if (info && [info count]) {
break;
}
}
return info;
}
#pragma mark 获取WIFI名字
+ (NSString *)getWifiSSID
{
return (NSString *)[self fetchSSIDInfo][@"SSID"];
}
#pragma mark 获取WIFI的MAC地址
+ (NSString *)getWifiBSSID
{
return (NSString *)[self fetchSSIDInfo][@"BSSID"];
}
获取当前的Wifi信号强度
获取信号强度与获取网络状态有点类似,通过遍历状态栏,从而获取WIFI图标的信号强度。在获取前需注意当前状态是否为WIFI。如下:
+ (int)getWifiSignalStrength{
int signalStrength = 0;
// 判断类型是否为WIFI
if ([[self getNetworkType]isEqualToString:@"WIFI"]) {
UIApplication *app = [UIApplication sharedApplication];
id statusBar = [app valueForKey:@"statusBar"];
UIView *foregroundView = [statusBar valueForKey:@"foregroundView"];
NSArray *subviews = [foregroundView subviews];
NSString *dataNetworkItemView = nil;
for (id subview in subviews) {
if([subview isKindOfClass:[NSClassFromString(@"UIStatusBarDataNetworkItemView") class]]) {
dataNetworkItemView = subview;
break;
}
}
int signalStrength = [[dataNetworkItemView valueForKey:@"_wifiStrengthBars"] intValue];
}
return signalStrength;
}
2.刘海屏下的网络状态获取
在刘海屏下,小编寻找资料,找了一圈都没有发现可以使小编满意的答案,只找到了一个开源类Reachability,这个类可以获取刘海屏下的网络状态,当然普通设备也可以用。但是在之后,小编根据结构,一步步寻找,终于找到自己想要的东西。
Reachability的使用
下载开源类Reachability,然后根据文档使用即可(该类把移动网络统称为WWAN):
+ (NSString *)getNetworkTypeByReachability
{
NSString *network = @"";
switch ([[Reachability reachabilityForInternetConnection]currentReachabilityStatus]) {
case NotReachable:
network = @"NONE";
break;
case ReachableViaWiFi:
network = @"WIFI";
break;
case ReachableViaWWAN:
network = @"WWAN";
break;
default:
break;
}
if ([network isEqualToString:@""]) {
network = @"NO DISPLAY";
}
return network;
}
通过结构获取网络类型
在研究这部分之前,小编在想,为什么在其他设备可以通过遍历状态栏发现网络状态,但是在刘海屏不行。通过打断点一步步摸索发现,刘海屏的状态栏的结果和其他设备不太一样。在分级上复杂了许多,而且移动网络和WIFI竟然是调用了两个完全不同的类(iOS 11的截图,iOS 11以上版本如有需要,请自己查看)。如下:这让小编感觉到了。。。(自行脑补),在不断的探索下,终于完成了在上面的基础适配刘海屏的网络类型获取。
首先,通过添加方法判断是否是刘海屏的iPhone,如下:
//刘海屏safeAreaInset的高度(所有的刘海屏都一致)
static const CGFloat liuHaiHeight = 44;
#pragma mark 判断是否是刘海屏
- (BOOL)isLiuHaiScreen
{
if (@available(iOS 11.0, *)) {
UIEdgeInsets safeAreaInsets = [UIApplication sharedApplication].windows[0].safeAreaInsets;
return safeAreaInsets.top == liuHaiHeight || safeAreaInsets.bottom == liuHaiHeight || safeAreaInsets.left == liuHaiHeight || safeAreaInsets.right == liuHaiHeight;
}else {
return NO;
}
}
然后通过层级结构判断类型,如下:
+ (NSString *)getNetworkType
{
UIApplication *app = [UIApplication sharedApplication];
id statusBar = [app valueForKeyPath:@"statusBar"];
NSString *network = @"";
if ([[[self alloc]init]isLiuHaiScreen]) {
// 刘海屏
id statusBarView = [statusBar valueForKeyPath:@"statusBar"];
UIView *foregroundView = [statusBarView valueForKeyPath:@"foregroundView"];
NSArray *subviews = [[foregroundView subviews][2] subviews];
if (subviews.count == 0) {
// iOS 12
id currentData = [statusBarView valueForKeyPath:@"currentData"];
id wifiEntry = [currentData valueForKey:@"wifiEntry"];
if ([[wifiEntry valueForKey:@"_enabled"] boolValue]) {
network = @"WIFI";
}else {
// 卡1:
id cellularEntry = [currentData valueForKey:@"cellularEntry"];
// 卡2:
id secondaryCellularEntry = [currentData valueForKey:@"secondaryCellularEntry"];
if (([[cellularEntry valueForKey:@"_enabled"] boolValue]|[[secondaryCellularEntry valueForKey:@"_enabled"] boolValue]) == NO) {
// 无卡情况
network = @"NONE";
}else {
// 判断卡1还是卡2
BOOL isCardOne = [[cellularEntry valueForKey:@"_enabled"] boolValue];
int networkType = isCardOne ? [[cellularEntry valueForKey:@"type"] intValue] : [[secondaryCellularEntry valueForKey:@"type"] intValue];
switch (networkType) {
case 0://无服务
network = [NSString stringWithFormat:@"%@-%@", isCardOne ? @"Card 1" : @"Card 2", @"NONE"];
break;
case 3:
network = [NSString stringWithFormat:@"%@-%@", isCardOne ? @"Card 1" : @"Card 2", @"2G/E"];
break;
case 4:
network = [NSString stringWithFormat:@"%@-%@", isCardOne ? @"Card 1" : @"Card 2", @"3G"];
break;
case 5:
network = [NSString stringWithFormat:@"%@-%@", isCardOne ? @"Card 1" : @"Card 2", @"4G"];
break;
default:
break;
}
}
}
}else {
for (id subview in subviews) {
if ([subview isKindOfClass:NSClassFromString(@"_UIStatusBarWifiSignalView")]) {
network = @"WIFI";
}else if ([subview isKindOfClass:NSClassFromString(@"_UIStatusBarStringView")]) {
network = [subview valueForKeyPath:@"originalText"];
}
}
}
}else {
// 非刘海屏
UIView *foregroundView = [statusBar valueForKeyPath:@"foregroundView"];
NSArray *subviews = [foregroundView subviews];
for (id subview in subviews) {
if ([subview isKindOfClass:NSClassFromString(@"UIStatusBarDataNetworkItemView")]) {
int networkType = [[subview valueForKeyPath:@"dataNetworkType"] intValue];
switch (networkType) {
case 0:
network = @"NONE";
break;
case 1:
network = @"2G";
break;
case 2:
network = @"3G";
break;
case 3:
network = @"4G";
break;
case 5:
network = @"WIFI";
break;
default:
break;
}
}
}
}
if ([network isEqualToString:@""]) {
network = @"NO DISPLAY";
}
return network;
}
通过结构获取WIFI信号强度
因为上面获取SSID和BSSID的方法在iPhone X依然可用,因此就不多加说明了,获取刘海屏信号强度的方法也类似于上方获取类型。首先判断是否属于WIFI网络,然后根据刘海屏特有的结构找到特定的地方获取值就行,如下:
#pragma mark 获取Wifi信号强度
+ (int)getWifiSignalStrength
{
int signalStrength = 0;
// 判断类型是否为WIFI
if ([[self getNetworkType]isEqualToString:@"WIFI"]) {
UIApplication *app = [UIApplication sharedApplication];
id statusBar = [app valueForKey:@"statusBar"];
if ([[[self alloc]init]isLiuHaiScreen]) {
// 刘海屏
id statusBarView = [statusBar valueForKeyPath:@"statusBar"];
UIView *foregroundView = [statusBarView valueForKeyPath:@"foregroundView"];
NSArray *subviews = [[foregroundView subviews][2] subviews];
if (subviews.count == 0) {
// iOS 12
id currentData = [statusBarView valueForKeyPath:@"currentData"];
id wifiEntry = [currentData valueForKey:@"wifiEntry"];
signalStrength = [[wifiEntry valueForKey:@"displayValue"] intValue];
// dBm
// int rawValue = [[wifiEntry valueForKey:@"rawValue"] intValue];
}else {
for (id subview in subviews) {
if ([subview isKindOfClass:NSClassFromString(@"_UIStatusBarWifiSignalView")]) {
signalStrength = [[subview valueForKey:@"_numberOfActiveBars"] intValue];
}
}
}
}else {
// 非刘海屏
UIView *foregroundView = [statusBar valueForKey:@"foregroundView"];
NSArray *subviews = [foregroundView subviews];
NSString *dataNetworkItemView = nil;
for (id subview in subviews) {
if([subview isKindOfClass:[NSClassFromString(@"UIStatusBarDataNetworkItemView") class]]) {
dataNetworkItemView = subview;
break;
}
}
signalStrength = [[dataNetworkItemView valueForKey:@"_wifiStrengthBars"] intValue];
return signalStrength;
}
}
return signalStrength;
}
上次发布了这篇文章之后,有人问我,怎么才能获取设备的IP地址呢?在这里,小编附上获取iP地址的方法。
先导入头文件,如下:
#import <ifaddrs.h>
#import <arpa/inet.h>
实现方法,如下:
#pragma mark 获取设备IP地址
+ (NSString *)getIPAddress
{
NSString *address = @"error";
struct ifaddrs *interfaces = NULL;
struct ifaddrs *temp_addr = NULL;
int success = 0;
// 检索当前接口,在成功时,返回0
success = getifaddrs(&interfaces);
if (success == 0) {
// 循环链表的接口
temp_addr = interfaces;
while(temp_addr != NULL) {
// 开热点时本机的IP地址
if ([[NSString stringWithUTF8String:temp_addr->ifa_name] isEqualToString:@"bridge100"]
) {
address = [NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *)temp_addr->ifa_addr)->sin_addr)];
}
if(temp_addr->ifa_addr->sa_family == AF_INET) {
// 检查接口是否en0 wifi连接在iPhone上
if([[NSString stringWithUTF8String:temp_addr->ifa_name] isEqualToString:@"en0"]) {
// 得到NSString从C字符串
address = [NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *)temp_addr->ifa_addr)->sin_addr)];
}
}
temp_addr = temp_addr->ifa_next;
}
}
// 释放内存
freeifaddrs(interfaces);
return address;
}
3.iOS 12下的补充
在iOS 12下xcode需要打开权限才可以正常操作,如下:
到这里为止,这篇文章就结束了。在这里提醒一下各位看官,横屏时请注意不要把状态栏去掉。有说明不足的地方欢迎评论,这里附上Demo下载地址:Demo。最后,希望这篇文章对各位看官们有所帮助。