Question

app delegate.h文件如下

#import <UIKit/UIKit.h>

@class AFAViewController;
@class OpenInChromeController;
@class AFABarcodeScanner;


@interface AFAAppDelegate : NSObject <UIApplicationDelegate,UIAlertViewDelegate>
{

    OpenInChromeController *openInChromeController_;
    AFABarcodeScanner *bs;

}



@property (strong, nonatomic) UIWindow *window;

@property (strong, nonatomic)AFAViewController *viewController;

@property(strong,nonatomic)AFABarcodeScanner *bs;



@end

app delegate.m文件如下

#import "AFAAppDelegate.h"
#import "AFAViewController.h"
#import "OpenInChromeController.h"
#import "AFABarcodeScanner.h"


@implementation AFAAppDelegate

@synthesize bs;


@synthesize window;


- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{

    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone)
    {
        self.viewController = [[AFAViewController alloc] initWithNibName:@"AFAViewController_iPhone" bundle:nil];
    }

    else
    {
        self.viewController = [[AFAViewController alloc] initWithNibName:@"AFAViewController_iPad" bundle:nil];

    }

    self.window.rootViewController = self.viewController;
    [self.window makeKeyAndVisible];
    return YES;
}




- (void)applicationWillResignActive:(UIApplication *)application
{
    // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
    // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
}

- (void)applicationDidEnterBackground:(UIApplication *)application
{
    // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later. 
    // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
}


- (void)applicationWillEnterForeground:(UIApplication *)application
{
    // Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.

}


- (void)applicationDidBecomeActive:(UIApplication *)application
{
    // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
}

- (void)applicationWillTerminate:(UIApplication *)application
{
    // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
}

-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{

    if (buttonIndex == 0)
    {
        [[UIApplication sharedApplication] openURL:[NSURL URLWithString:
                                                    @"itms-apps://itunes.apple.com/us/app/chrome/id535886823"]];

    }
}



- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation
{

    UIAlertView *alertView;
    alertView = [[UIAlertView alloc] initWithTitle:@"Error" message:@"inside open url" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
    [alertView show];

    AFABarcodeScanner *vc = [[AFABarcodeScanner alloc] initWithNibName:@"AFABarcodeScanner" bundle:nil];
    [self.view addSubview:vc.view];



    return YES;
}




@end

我想在自定义网址功能中打开新视图。从外部网页获取请求时，必须打开应用程序委托内的视图。

Answer 1

有几种方法可以实现它：

首先：AppDelegate有一个属性窗口。窗口是一个视图，所以你可以做

[self.window addSubview:newView];

第二：视图控制器可以在不处理应用程序委托的情况下到达窗口。

[controller.view addSubview:overlayView];

Answer 2

获取AFAViewController（self.viewController）的实例并将子视图添加到此视图中，或者如果可能，将AFABarcodeScanner作为模型显示

在app delegate中打开一个新视图

2 个答案: