[英]How to navigate from app delegate class in window based iPhone application. How to write pushViewcontroller method in app delegate class
但是我需要為此使用另一種觀點
[self.navigationController pushViewController:info動畫:是];
但它不會推動。 只是nslog僅打印
- (void)applicationDidBecomeActive:(UIApplication *)application
{
//To count the number of launches
NSInteger i = [[NSUserDefaults standardUserDefaults] integerForKey:@"numOfCalls"];
[[NSUserDefaults standardUserDefaults] setInteger:i+1 forKey:@"numOfCalls"];
NSLog(@"the number of active calls are %d",i%3);
if(i%3==0 && i!=0)
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"you might prefer MedChart+" message:@"Get it now for more options" delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:@"Ok",nil];
[alert show];
[alert release];
}
}
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
if (buttonIndex == 0)
{
NSLog(@"canceled");
}
else if (buttonIndex == 1)
{
NSLog(@"Pushed to the information view ");
InformationViewCotroller *info = [[InformationViewCotroller alloc]initWithNibName:@"InformationViewCotroller" bundle:nil];
[self.navigationController pushViewController:info animated:YES];
}
}
(不要考慮“ i”值,這是我邏輯的一部分)。 提前致謝
導航到任何viewController之前,請為appDelegate的navigationController設置RootController。 添加navigationController.View
作為window的子視圖,然后您的根控制器將是第一個ViewController。從那里您可以推送到任何viewController。
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