有没有办法从Iphone获得信号强度？

Question

Is there a way to get Signal strength from Iphone using wifi ? I know that Public API's do not allow. Istumbler allows it. But it is closed.

With the Private API's is it possible ? I do not want to keep on app store, so I do not mind that.

Would the code for that be available ?

Thanks for that.

I found one code for that :

int getSignalStrength()
{
    void *libHandle = dlopen("/System/Library/Frameworks/CoreTelephony.framework/CoreTelephony", RTLD_LAZY);
    int (*CTGetSignalStrength)();
    CTGetSignalStrength = dlsym(libHandle, "CTGetSignalStrength");
    if( CTGetSignalStrength == NULL) NSLog(@"Could not find CTGetSignalStrength");  
    int result = CTGetSignalStrength();
    dlclose(libHandle); 
    return result;
}

But I dont know what I should pass in "/System/Library/Frameworks/CoreTelephony.framework/CoreTelephony".

I have never used IOS development. But I want to run this and test. Can anyone help me what I should do ?

How I should keep the code ?

Answer 1

You can only achieve this with private API calls. There is a list on google code with all the functions related to 802.11 devices. Apple80211GetInfoCopy should be the one you're looking for.

But remember that you will not get this into the AppStore...