How to disable Google Tag Manager console logging

After I added Google Tag Manager to the project I see lots its log entries in the console. Is there a way to disable it? Console log is full of noise:

GoogleTagManager info: Processing logged event: _vs with parameters: {
    "_o" = auto;
    "_pc" = UIViewController;
    "_pi" = "-3988739357756819671";
    "_sc" = "Bubbie.MamboBamboViewController";
    "_si" = "-3988739357756819670";
}
2017-07-27 12:01:09.744 BubbieHuff[77205:6894827] GoogleTagManager info: Processing logged event: show_view with parameters: {
    "_sc" = "Bubbie.MamboBamboViewController";
    "_si" = "-3988739357756819670";
    name = Mambo;
}

Solution

I just had this problem in a project that combines Google Tag Manager and Firebase. Since no header about logging is exposed I couldn't find a way to turn it off.

This is a monkey patch I came up with that lets you control the info logs from GTM.

+ (void)patchGoogleTagManagerLogging {

    Class class = NSClassFromString(@"TAGLogger");

    SEL originalSelector = NSSelectorFromString(@"info:");
    SEL detourSelector = @selector(detour_info:);

    Method originalMethod = class_getClassMethod(class, originalSelector);
    Method detourMethod = class_getClassMethod([self class], detourSelector);

    class_addMethod(class,
                    detourSelector,
                    method_getImplementation(detourMethod),
                    method_getTypeEncoding(detourMethod));

    method_exchangeImplementations(originalMethod, detourMethod);
}


+ (void)detour_info:(NSString*)message {
    return; // Disable logging
}