使用 UINavigationItem 而不是 UINavigationController 的 PushViewController
我已经实现了一个方法 didSelectRowAtIndexPath 应该推送另一个视图。我有一个使用 navigationController 正确运行的代码，但在本例中我在视图上使用 navigationItem 。我怎样才能触发视图？感谢
错误日志：
2010-03-25 00:09:52.459 TableArchive[1062:207] trigger
2010-03-25 00:09:52.461 TableArchive[1062:207] *** -[UINavigationItem pushViewController:animated:]: unrecognized selector sent to instance 0x3921ca0
2010-03-25 00:09:52.462 TableArchive[1062:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[UINavigationItem pushViewController:animated:]: unrecognized selector sent to instance 0x3921ca0'
2010-03-25 00:09:52.463 TableArchive[1062:207] Stack: (
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
NSLog(@"trigger");
if(dvController == nil) {
DetailView *aController =[[DetailView alloc]initWithNibName:@"DetailView" bundle:nil];
self.dvController = aController;
[aController release];
}
[[self navItem]pushViewController:dvController animated:YES];
[dvController release];
}
I have implemented a method didSelectRowAtIndexPath that should push another view. I have a code running properly using a navigationController but in this case I am using a navigationItem on a view. How could I trigger a view? Thanx
Error log:
2010-03-25 00:09:52.459 TableArchive[1062:207] trigger
2010-03-25 00:09:52.461 TableArchive[1062:207] *** -[UINavigationItem pushViewController:animated:]: unrecognized selector sent to instance 0x3921ca0
2010-03-25 00:09:52.462 TableArchive[1062:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[UINavigationItem pushViewController:animated:]: unrecognized selector sent to instance 0x3921ca0'
2010-03-25 00:09:52.463 TableArchive[1062:207] Stack: (
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
NSLog(@"trigger");
if(dvController == nil) {
DetailView *aController =[[DetailView alloc]initWithNibName:@"DetailView" bundle:nil];
self.dvController = aController;
[aController release];
}
[[self navItem]pushViewController:dvController animated:YES];
[dvController release];
}
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显然你不能这样做
[[self navItem]pushViewController:dvControllerAnimated:YES];因为UINavigationItem不是UINavigationController。您必须使用
[[self navigationController] PushViewController:dvControllerAnimated:YES];代替。除此之外，我不明白你在问什么。Obviously you can't do
[[self navItem]pushViewController:dvController animated:YES];because aUINavigationItemisn't aUINavigationController.You have to use
[[self navigationController] pushViewController:dvController animated:YES];instead. Beyond that, I don't get what you're asking.您需要将视图（XIB？）中的 UINavigationItem 设置为 UINavigationController 导航项。您可以通过将 IBOutlet 设置为 navItem 来完成此操作，并且在您的代码中只需执行 self.navControllet.navItem = navItem （类似的操作）。
You need to set the UINavigationItem from the view (XIB ?) as your UINavigationController navigation item. You can do this by setting an IBOutlet to the navItem and at your code you just do self.navControllet.navItem = navItem (something like that).