ios - 从非ECSlidingViewController打开ECSlidingViewController

我尝试在IBAction上达到ECSlidingViewController。但是，当我尝试以下代码时:

-(IBAction)openNewPage:(id)sender{ //IV

UIStoryboard *storyboard;
ECSlidingViewController *slidingViewController = (ECSlidingViewController *)[storyboard instantiateViewControllerWithIdentifier:@"IV"];
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone) {
    storyboard = [UIStoryboard storyboardWithName:@"iPhone" bundle:nil];
} else if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
    storyboard = [UIStoryboard storyboardWithName:@"iPad" bundle:nil];
}

slidingViewController.topViewController = [storyboard instantiateViewControllerWithIdentifier:@"FirstTop"];

}

我收到以下错误:

 'NSInvalidArgumentException', reason: '*** -[__NSArrayM insertObject:atIndex:]: object cannot be nil'

我在按钮上尝试了模式操作，“touchupinside”将落在InitialViewController上。有什么建议吗？

最佳答案

您需要将定义slideViewViewController的行移动到if-else-if子句的下方，因为故事板当前执行的位置为nil。

UIStoryboard *storyboard;
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone) {
    storyboard = [UIStoryboard storyboardWithName:@"iPhone" bundle:nil];
} else if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
    storyboard = [UIStoryboard storyboardWithName:@"iPad" bundle:nil];
}
ECSlidingViewController *slidingViewController = (ECSlidingViewController *)[storyboard instantiateViewControllerWithIdentifier:@"IV"];
slidingViewController.topViewController = [storyboard instantiateViewControllerWithIdentifier:@"FirstTop"];

关于ios - 从非ECSlidingViewController打开ECSlidingViewController，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/15748068/