打開應用程序委託中的新觀點

Question

應用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 

應用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 

我想打開裏面的新視角自定義url函數。當從外部網頁獲取請求時，必須打開應用程序委託中的視圖。

Answer 1

有幾種方法來實現它：

第一：AppDelegate中有一個屬性窗口。窗口是一個視圖，所以你可以做

[self.window addSubview:newView]; 

二：一個視圖控制器可以無需處理程序委託到達窗口。

[controller.view addSubview:overlayView]; 

Answer 2

獲取AFAViewController（self.viewController）的實例和子視圖添加到該視圖，否則目前AFABarcodeScanner爲模型如果可能的話