Open Hsukun opened 5 years ago
//- (void)setTitle:(NSString *)title //{ // if (self.topViewController.navigationView) { // [self.navigationView setTitle:title]; // } //}
或将 ‘ self.topViewController.navigationView’ 的判断条件改为:self.topViewController.navigationController, 因为self.topViewController 拿回来的可能是 UINavigationController,且当 navigationController 为空时,获取navigationView时就会被NSAssert拦截,此判断根本无效:
if (!self.navigationController) { NSAssert(NO, @"attention: this controller's navigationcontroller is null: %@",self); }
//- (void)setTitle:(NSString *)title //{ // if (self.topViewController.navigationView) { // [self.navigationView setTitle:title]; // } //}
或将 ‘ self.topViewController.navigationView’ 的判断条件改为:self.topViewController.navigationController, 因为self.topViewController 拿回来的可能是 UINavigationController,且当 navigationController 为空时,获取navigationView时就会被NSAssert拦截,此判断根本无效:
if (!self.navigationController) { NSAssert(NO, @"attention: this controller's navigationcontroller is null: %@",self); }