嗨，我设法通过使用以下代码从TopVC转到BottomVC。但是之后，我的bottomVC将无法使用。单击链接后，BottomVC将不会继续前进。
编辑答案
顶级VC我使用以下代码转到bottomVC，实际上我是转到BottomVC还是BottomClass？
UIStoryboard *sb = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
UIViewController *vc = [sb instantiateViewControllerWithIdentifier:@"BuyCredit"];
vc.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[[self navigationController] pushViewController:vc animated:YES];
UINavigationController* classesNav = (UINavigationController*)self.tabBarController.viewControllers[4];
BuyCredit *classesViewController = [classesNav.viewControllers firstObject];
[classesViewController fromClassBook:sURL];
底部VC假定在单击链接时加载另一个VC，但是一切都挂起了
- (void)viewDidLoad {
[super viewDidLoad];
sURL = self.urlString;
NSLog(@"Receiving From and the sURL : %@", sURL);
NSURL *url = [NSURL URLWithString:sURL];
NSURLRequest *urlRequest = [NSURLRequest requestWithURL:url];
[webView setDelegate:(id<UIWebViewDelegate>)self];
[webView loadRequest:urlRequest];
}
- (void)fromClassBook:(NSString*)string {
sURL = string;
NSLog(@"Please pass over **** %@", sURL);
NSURL *url = [NSURL URLWithString:sURL];
NSURLRequest *urlRequest = [NSURLRequest requestWithURL:url];
[webView setDelegate:(id<UIWebViewDelegate>)self];
[webView loadRequest:urlRequest];
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
PurchaseDet *target = segue.destinationViewController;
if ([segue.identifier isEqualToString:@"PurchaseDet"]) {
target.urlString = sURL;
}
}
- (BOOL)webView:(UIWebView*)webView shouldStartLoadWithRequest:(NSURLRequest*)request navigationType:(UIWebViewNavigationType)navigationType {
NSURL *URL = [request URL];
NSString *theString = [URL absoluteString];
NSRange match;
NSLog(@"Detect the URL theString : %@", theString);
match = [theString rangeOfString: @"PHPSMI"];
//--- If the URL string does not contain purchase_det.asp meaning it will load the webview
if (match.location == NSNotFound) {
sURL = theString;
return YES; //--- Load webview
} else { //--- Because currently the purchase confirm page is just another page, hence will reload the current webview.
NSLog(@"Will pass to SEQUE and called the URL :%@",theString);
//--- Calling this method will tell the segue hey I want to redirect to another viewController.
//--- Update the sURL with the latest String
sURL = theString;
[self performSegueWithIdentifier:@"PurchaseDet" sender:self];
return NO; // Don't load the webview, capture the sURL and trigger NewsDet segue, and then pass sURL as urlstring to destination VC
}
}
@end
最佳答案
更换[self presentViewController:vc animated:YES completion:NULL];
用
[[self navigationController] pushViewController:vc animated:YES];
注意:-
您仅在TopVC上显示bottomVC。因此rootViewController仍为TopVC。因此，当您调用
performSegueWithIdentifier时，它将为bottomVC获取nil对象。尝试这个..
关于ios - 从一个VC到另一个VC，但是之后一切都挂起了，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/49939270/