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== Scanning for nearby networks == | |||
<source lang="c"> | |||
#include <MobileWiFi.h> | |||
WiFiManagerRef _manager; | |||
WiFiDeviceClientRef _client; | |||
int main() | |||
{ | |||
_manager = WiFiManagerClientCreate(kCFAllocatorDefault, 0); | |||
CFArrayRef devices = WiFiManagerClientCopyDevices(_manager); | |||
_client = (WiFiDeviceClientRef)CFArrayGetValueAtIndex(devices, 0); | |||
WiFiManagerClientScheduleWithRunLoop(_manager, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode); | |||
WiFiDeviceClientScanAsync(_client, (CFDictionaryRef)[NSDictionary dictionary], scanCallback, 0); | |||
CFRelease(devices); | |||
} | |||
void scanCallback(WiFiDeviceClientRef device, CFArrayRef results, WiFiErrorRef error, void *token) | |||
{ | |||
NSLog(@"Networks: %@", results); | |||
WiFiManagerClientUnscheduleFromRunLoop(_manager); | |||
CFRelease(_manager); | |||
} | |||
</source> | |||
{{Navbox Frameworks}} | {{Navbox Frameworks}} |
Revision as of 16:39, 4 March 2013
MobileWiFi.framework | |
Private Framework | |
---|---|
Availabile | 3.0 – present |
Headers | [headers.cynder.me] |
MobileWiFi is the framework that manages WiFi functionality on iOS. It replaces the obsolete Apple80211 framework. MobileWiFi.framework has a C API, and a unfinished reverse-engineered header is available here.
Note: Your program needs the com.apple.wifi.manager-access entitlement to use any of the WiFiManager functions.
Retrieving a list of known networks
#include <MobileWiFi.h>
WiFiManagerRef manager = WiFiManagerClientCreate();
CFArrayRef networks = WiFiManagerClientCopyNetworks(manager);
NSLog(@"networks: %@", networks);
CFRelease(manager);
CFRelease(networks);
Getting the WiFi signal strength
#include <math.h>
#include <MobileWiFi.h>
// We're not using the manager here but you need to create one for this code to work.
WiFiManagerRef manager = WiFiManagerClientCreate();
CFArrayRef devices = WiFiManagerClientCopyDevices();
WiFiDeviceClientRef client = (WiFiDeviceClientRef)CFArrayGetValueAtIndex(devices, 0);
CFNumberRef RSSI = (CFNumberRef)WiFiDeviceClientCopyProperty(client, kWiFiScaledRSSIKey);
float strength;
CFNumberGetValue(RSSI, kCFNumberFloatType, &strength);
strength = strength * 100;
// Round to the nearest integer.
strength = ceilf(strength);
// Convert to a negative number.
strength = strength * -1;
NSLog(@"WiFi signal strength: %f dBm", strength);
CFRelease(RSSI);
CFRelease(devices);
CFRelease(manager);
Scanning for nearby networks
#include <MobileWiFi.h>
WiFiManagerRef _manager;
WiFiDeviceClientRef _client;
int main()
{
_manager = WiFiManagerClientCreate(kCFAllocatorDefault, 0);
CFArrayRef devices = WiFiManagerClientCopyDevices(_manager);
_client = (WiFiDeviceClientRef)CFArrayGetValueAtIndex(devices, 0);
WiFiManagerClientScheduleWithRunLoop(_manager, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode);
WiFiDeviceClientScanAsync(_client, (CFDictionaryRef)[NSDictionary dictionary], scanCallback, 0);
CFRelease(devices);
}
void scanCallback(WiFiDeviceClientRef device, CFArrayRef results, WiFiErrorRef error, void *token)
{
NSLog(@"Networks: %@", results);
WiFiManagerClientUnscheduleFromRunLoop(_manager);
CFRelease(_manager);
}