当编写代码时，不论是在TabbarController还是在Viewcontroller或者是NavagationController中任何一个页面写方法时，我们都可以使用以下方法获取程序正在展示的当前页
方法的声明：
-(UIViewController*) currentViewController; 方法的调用：
-(UIViewController*) findBestViewController:(UIViewController*)vc {
if (vc.presentedViewController) {
// Return presented view controller
return [self findBestViewController:vc.presentedViewController];
} else if ([vc isKindOfClass:[UISplitViewController class]]) {
// Return right hand side
UISplitViewController* svc = (UISplitViewController*) vc;
if (svc.viewControllers.count > 0)
return [self findBestViewController:svc.viewControllers.lastObject];
else
return vc;
} else if ([vc isKindOfClass:[UINavigationController class]]) {
// Return top view
UINavigationController* svc = (UINavigationController*) vc;
if (svc.viewControllers.count > 0)
return [self findBestViewController:svc.topViewController];
else
return vc;
} else if ([vc isKindOfClass:[UITabBarController class]]) {
// Return visible view
UITabBarController* svc = (UITabBarController*) vc;
if (svc.viewControllers.count > 0)
return [self findBestViewController:svc.selectedViewController];
else
return vc;
} else {
// Unknown view controller type, return last child view controller
return vc;
}
}
-(UIViewController*) currentViewController {
// Find best view controller
UIViewController* viewController = [UIApplication sharedApplication].keyWindow.rootViewController;
return [self findBestViewController:viewController];
} UIViewController * viewControllerNow = [self currentViewController];
if ([viewControllerNow isKindOfClass:[XXXViewController class]]) { //如果是页面XXX，则执行下面语句
XXXXXX
} 君凯商联网-iOS-字唐名僧
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