ios - 在Google Analytics API跟踪器代码中找不到错误

我添加了所有框架，并实现了其他GA API代码并返回了分析数据。不确定错误是什么？我收到“选择器sendEventWithCategory的未知实例:

(IBAction)didTouchOnInviteButton
{
    ContactListViewController *contactsViewController = [self.storyboard instantiateViewControllerWithIdentifier:@"ContactListViewControllerId"];
    contactsViewController.mode = modeInviteToEvent;
    contactsViewController.event = self.event;
    [self.navigationController pushViewController:contactsViewController animated:YES];

    id <GAITracker> tracker = [[GAI sharedInstance] defaultTracker];
    [tracker sendEventWithCategory:@"Contacts" withAction:@"Invite Button Pressed" withValue:1];
}

最佳答案

尝试这个:

[[GAI sharedInstance].defaultTracker sendEventWithCategory:@"Contacts" withAction:@"Invite Button Pressed" withLabel:nil withValue:@1];