我需要在Objective C中运行一个程序。我找到了获取WiFi信号强度的代码。
但是我没有得到mobilewifi.h文件？这个文件在哪里可以获得？我已经在谷歌上搜索过了。
此外，我不知道应该把这个文件放在项目的哪个位置？放在哪个.m文件中？AppDelegate中吗？
代码如下：
#include <math.h>
#include <MobileWiFi.h>
WiFiManagerRef manager = WiFiManagerClientCreate(kCFAllocatorDefault, 0);
CFArrayRef devices = WiFiManagerClientCopyDevices(_manager);
WiFiDeviceClientRef client = (WiFiDeviceClientRef)CFArrayGetValueAtIndex(devices, 0);
CFDictionaryRef data = (CFDictionaryRef)WiFiDeviceClientCopyProperty(_device, CFSTR("RSSI"));
CFNumberRef scaled = (CFNumberRef)WiFiDeviceClientCopyProperty(_device, kWiFiScaledRSSIKey);
CFNumberRef RSSI = (CFNumberRef)CFDictionaryGetValue(data, CFSTR("RSSI_CTL_AGR"));
int raw;
CFNumberGetValue(RSSI, kCFNumberIntType, &raw);
float strength;
CFNumberGetValue(scaled, kCFNumberFloatType, &strength);
CFRelease(scaled);
strength *= -1;
// Apple uses -3.0.
int bars = (int)ceilf(strength * -3.0f);
bars = MAX(1, MIN(bars, 3));
printf("WiFi signal strength: %d dBm\n\t Bars: %d\n", raw, bars);
CFRelease(data);
CFRelease(scaled);
CFRelease(devices);
CFRelease(manager);