我想更改从推送通知打开应用程序时打开的选项卡。

目前，我让应用程序在应用程序委托(delegate)中注册通知并在第一个 View Controller 中运行一个方法:

AppDelegate.m

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo {

NSLog(@"didReceiveRemoteNotification");self.apstype = [[NSMutableString alloc] init];self.apstype = [NSMutableString stringWithFormat:@"%@", [[userInfo objectForKey:@"aps"] objectForKey:@"apstype"]];

    // Add the tab bar controller's current view as a subview of the window
    [[UIApplication sharedApplication] setIdleTimerDisabled:YES];

    HomeTab_Main *controller = [HomeTab_Main alloc];
    [controller receivedNotification];

    if (application.applicationState == UIApplicationStateActive){
        NSLog(@"UIApplicationStateActive");
    } else if (application.applicationState == UIApplicationStateBackground){
        NSLog(@"UIApplicationStateBackground");
    } else if (application.applicationState == UIApplicationStateInactive){
        NSLog(@"UIApplicationStateInactive");
    } else {
        NSLog(@"else");
    }
}
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    UINavigationBar *navigationBarProxy = [UINavigationBar appearance];
    if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone){
        UIImage *backgroundImage = [UIImage imageNamed:@"ge_navigationBar.png"];
        [navigationBarProxy setBackgroundImage:backgroundImage forBarMetrics:UIBarMetricsDefault];

    } else if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad){
        UIImage *backgroundImage = [UIImage imageNamed:@"ge_navigationBar~ipad.png"];
        [navigationBarProxy setBackgroundImage:backgroundImage forBarMetrics:UIBarMetricsDefault];
    }

    [[UIApplication sharedApplication] registerForRemoteNotificationTypes: (UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound | UIRemoteNotificationTypeAlert)];

    UIColor *tintColour = [UIColor colorWithRed:0.000 green:0.600 blue:0.765 alpha:1];
    [[UIBarButtonItem appearance] setTintColor:tintColour];

    [[UINavigationBar appearance] setTitleTextAttributes:
     [NSDictionary dictionaryWithObjectsAndKeys:[UIColor colorWithRed:255.0/255.0 green:255.0/255.0 blue:255.0/255.0 alpha:1.0],
      UITextAttributeTextColor, [UIColor colorWithRed:0.0 green:0.0 blue:0.0 alpha:0.8], UITextAttributeTextShadowColor, [NSValue valueWithUIOffset:UIOffsetMake(0, -1)], UITextAttributeTextShadowOffset, [UIFont fontWithName:@"Arial-Bold" size:0.0], UITextAttributeFont, nil]];

    return YES;
}

HomeTab_Main.m

- (void)receivedNotification
{
    AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];
    NSLog(@"%@", appDelegate.apstype);
    if([appDelegate.apstype isEqualToString:@"inbox"]){
        NSLog(@"goToTab");
        [self performSelector:@selector(goToTab) withObject:nil afterDelay:0.1];
    }
}

- (void)goToTab
{    
    NSLog(@"Go to tab");
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"1 new message" message:@"click to read" delegate:self cancelButtonTitle:@"cancel" otherButtonTitles:nil, nil];
    [alert show];

    self.tabBarController.selectedIndex = 2;
}

我遇到的主要问题是警报 View 正在显示，但选项卡没有改变。 从通知访问应用程序时，我想自动切换到相应的选项卡。有谁知道这如何通过任何示例实现？

添加了 didFinishLaunchingWithOptions

最佳答案

Luc 是对的，尽管它是 self.view.window.rootViewController 而不是 self.rootviewcontroller。 但是我不认为这是完美的解决方案，因为 TabBarController 并不总是必须是 rootViewController...

您的 TabBarController 是否在应用委托(delegate)/主窗口或另一个 viewController 中？

尝试在应用委托(delegate)或持有 TabBarController 的 viewController 中设置 selectedIndex。

我使用它在我的一个应用程序中使用它:

AppDelegate.m

-(void)showReportTab{
    [self.tabBarController setSelectedIndex:1];
}

AppDelegate.h

@property (nonatomic, strong) IBOutlet UITabBarController *tabBarController;

关于iphone - 收到推送通知后更改选定的选项卡，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/11154289/