Question

I’m receiving three warnings for the code below. The warnings are:

1: “Receiver type ‘const char *’ is not ‘id’ or interface pointer, consider casting it to ‘id'”
2: “Instance method ‘-alloc’ not found (return type defaults to ‘id’)”
3: “Instance method ‘-hideBanner:’ not found (return type defaults to ‘id’)”

Here is my code:

- (void)applicationWillEnterForeground:(UIApplication *)application
{

    MoPubManager *obj = [["MoPubManager.h" alloc] init];

    if( obj.adView ) {
        [self hideBanner:YES];
    }
    [obj.adView refreshAd];

}

What do these mean?

Answer 1

You are passing a cstring instead of the class. Try this:

MoPubManager *obj = [[MoPubManager alloc] init];