[英]How to present UIViewController from content ViewController?
[英]How to present UIViewController from viewController's view
我正在UIViewController
中使用UITableViewController
的視圖,如下所示:
UITableViewController *tvc = [[UITableViewController alloc] init];
[self.view addSubview:tvc.view];
現在,在此UITableViewController
我希望能夠在必要時顯示SFSafariViewController
。 我寫了下面的代碼:
if (showLink) {
SFSafariViewController *sfsvc = [[SFSafariViewController alloc] initWithURL:[NSURL URLWithString:@"https://www.google.com"]];
[self.presentingViewController.navigationController pushViewController:sfsvc animated:YES];
}
每當我運行此命令時,在控制台中都會出現以下錯誤,但不會發生任何事情:
[Warning] Attempting to load the view of a view controller while it is deallocating is not allowed and may result in undefined behavior (<SFSafariViewController: 0x7f8aef82a600>)
有什么想法可以解決這個問題嗎?
在這種情況下,使用rootViewController
推送SFSafariViewController
是您的解決方案。 在下面嘗試我的代碼
if (showLink) {
SFSafariViewController *sfsvc = [[SFSafariViewController alloc] initWithURL:[NSURL URLWithString:@"https://www.google.com"]];
UIViewController *rootViewController = UIApplication.sharedApplication.delegate.window;
[rootViewController.navigationController pushViewController:sfsvc animated:YES];
}
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