我有一个名为 vc0 的视图控制器，其显示如下：
[self presentViewController: vc1 animated: YES completion: nil];
在 vc1 中，我有一个按钮来展示另一个视图控制器：
[self presentViewController: vc2 animated: YES completion: nil];
然后在 vc2 中，我有一个关闭视图控制器的按钮：
[self dismissViewControllerAnimated:YES completion: ^{
// over here I call one method in vc1
}
正如预期的那样，它返回到 vc1.. 但是 vc1 中有一个按钮可以通过像这样关闭视图控制器来返回到 vc0：
[self dismissViewControllerAnimated:YES completion:nil];
但由于某种原因它不起作用，视图控制器不会被解散回 vc0。当我第一次展示 vc1 时，我可以按下按钮来关闭视图控制器并且它可以工作。但是当我按下按钮打开 vc2，当我关闭 vc2 回到 vc1，然后我按下按钮关闭视图控制器时，它就不起作用了。
抱歉，如果问题有点不清楚，我想说的话有点难以表达。
还有一件事：
我尝试dismissViewControllerAnimated:在 vc1 中替换以手动呈现 vc0，但随后我在控制台中收到一条日志，说我正在尝试呈现 vc0 但 vc1 的视图不在窗口层次结构中。这是什么意思？
感谢帮助！
更新：
在这种情况下 VC0 是MenuMileIndexViewController- VC1 是FlightViewController- VC2 是BookmarksTableViewController
这是涉及的代码：
MenuMileIndexViewController：
- (IBAction)goToOriginPage {
FlightRecorder *origin = [[FlightRecorder alloc] init];
[self presentViewController:origin animated:YES completion:nil];
}
飞行记录仪：
- (void)searchBarBookmarkButtonClicked:(UISearchBar *)searchBar {
[self bringUpBookmarkkTable];
}
- (void) bringUpBookmarkkTable {
BookmarkTableViewController *bookmarkTVC = [[BookmarkTableViewController alloc] init];
[bookmarkTVC setModalTransitionStyle: UIModalTransitionStyleFlipHorizontal];
[self presentViewController:bookmarkTVC animated:YES completion:nil];
}
- (IBAction)cancel {
[self dismissViewControllerAnimated:YES completion:nil];
}
- (void)endBookmarkProcessWithBookmarkCollection: (NSDictionary *)dict {
presetBookmarkContext = [dict mutableCopy];
bookmarkMode = YES;
NSString *compiledText = nil;
NSNumber *number1 = [NSNumber numberWithInt: 1];
if ([dict objectForKey: @"bookmarkTag"] == number1) {
compiledText = [NSString stringWithFormat: @"%@ to %@", [dict objectForKey: @"origin"], [dict objectForKey: @"destination"]];
}
else {
compiledText = [NSString stringWithFormat: @"%@ to %@", [dict objectForKey: @"destination"], [dict objectForKey: @"origin"]];
}
compiledText = [compiledText stringByReplacingOccurrencesOfString:@"Origin: " withString:@""];
compiledText = [compiledText stringByReplacingOccurrencesOfString:@"Destination: " withString:@""];
flightContext = [NSDictionary dictionaryWithObjectsAndKeys: [dict objectForKey: @"miles"], @"miles", compiledText, @"location", [[NSUserDefaults standardUserDefaults] objectForKey: @"tempD"], @"date", nil];
NSString *string = [NSString stringWithFormat: @"\nMiles: %.2f\nFlight: %@\nDate: %@", [[dict objectForKey: @"miles"] floatValue], compiledText, [[NSUserDefaults standardUserDefaults] objectForKey:@"tempD"]];
UIAlertView *bvkBookmarkAlertView = [[UIAlertView alloc] initWithTitle:@"Confirmation" message:string delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:@"Add", nil];
[bvkBookmarkAlertView show];
}
- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex {
if (buttonIndex == 1) {
[self cancel]; // Even though cancel is an IBAction, IBAction is the same thing as void so it is callable
}
}
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
if (buttonIndex == 1) {
[TheMileIndexViewController addDesiredMilesToIndex: [[flightContext objectForKey: @"miles"] doubleValue]];
[TravelLogViewController addFlight: flightContext];
if (!bookmarkMode) {
if ([checkbox isSelected]) {
[BookmarkHandler uploadBookmark: bookmarkFlightContext];
}
}
}
if (buttonIndex == 0) {
if ([alertView.title isEqualToString: @"Confirmation"]) {
bookmarkMode = NO;
}
}
}
书签表视图控制器：
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
[tableView deselectRowAtIndexPath:indexPath animated: YES];
NSDictionary *dict = [[BookmarkHandler bookmarkCollection] objectAtIndex: indexPath.row];
fl = [[FlightRecorder alloc] init];
[self dismissViewControllerAnimated:YES completion:^{
[fl endBookmarkProcessWithBookmarkCollection: dict];
}];
}
现在，我在模拟器中创建了应用程序的屏幕录像，显示了问题所在。我可以通过电子邮件将其发送给您以供参考。所以我可以通过电子邮件将其发送给您。