objective-c - UIApplication sharedApplication 帮助？

Question

我正在尝试访问一个创建导航 Controller 的变量，该导航 Controller 是我在 View Controller 中的 App Delegate 中定义的(我正在为每个选项卡构建一个带有 .plist 的选项卡栏应用程序，例如向下钻取应用程序).我正在尝试消除在非结构或联合的情况下显示“请求成员“indNavControl”的错误。有人可以帮我吗？

代码:

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

A37dgAppDelegate *AppDelegate = (A37dgAppDelegate *)[[UIApplication sharedApplication] delegate];
self.indNavControl = [AppDelegate.indNavControl];

//Get the dictionary of the selected data source.
NSDictionary *dictionary = [self.tableDataSource objectAtIndex:indexPath.row];

//Get the children of the present item.
NSArray *Children = [dictionary objectForKey:@"Children"];


if([Children count] == 0) {

    DetailViewController *dvController = [[DetailViewController alloc] initWithNibName:@"DetailView" bundle:[NSBundle mainBundle]];

    A37dgAppDelegate *AppDelegate = (A37dgAppDelegate *)[[UIApplication sharedApplication] delegate]; 
    [AppDelegate.indNavControll push indNavControl];
    [self.indNavControl pushViewController:dvController animated:YES];
    [dvController release];
}
else {

    //Prepare to tableview.
    IndustriesViewController *indViewControl = [[IndustriesViewController alloc] initWithNibName:@"IndustryView" bundle:[NSBundle mainBundle]];

    //Increment the Current View
    indViewControl.CurrentLevel += 1;

    //Set the title;
    indViewControl.CurrentTitle = [dictionary objectForKey:@"Title"];

    //Push the new table view on the stack
    A37dgAppDelegate *AppDelegate = (A37dgAppDelegate *)[[UIApplication sharedApplication] delegate];
    [self.indNavControl pushViewController:indViewControl animated:YES];

    indViewControl.tableDataSource = Children;

    [indViewControl release];
}

真的，我想做的就是使用 UIApplication sharedApplication 方法引用我的 View Controller ，但我不知道该怎么做。

Answer 1

您是否在此处导入“A37dgAppDelegate.h”和“IndustriesViewController.h”？