应用程序首次启动时调用 didReceiveRemoteNotification

我已经实现了 didReceiveRemoteNotification 方法。它工作并显示一个视图控制器以及传递的通知数据。仅当应用程序已在前台或在后台运行时，此功能才有效。但是，当应用程序未运行并且用户单击通知时，应用程序会启动，但看起来好像没有收到通知。通知不会写入文本文件，并且视图控制器不会被推送。

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
{
    if ( application.applicationState == UIApplicationStateActive)
    {
        NSDictionary *apsInfo = [userInfo objectForKey:@"aps"];

        NSString *alertMsg = @"";
        NSString *badge = @"";
        NSString *sound = @"";
        NSString *custom = @"";

        if( [apsInfo objectForKey:@"alert"] != NULL)
        {
            alertMsg = [apsInfo objectForKey:@"alert"];
        }


        if( [apsInfo objectForKey:@"badge"] != NULL)
        {
            badge = [apsInfo objectForKey:@"badge"];
        }


        if( [apsInfo objectForKey:@"sound"] != NULL)
        {
            sound = [apsInfo objectForKey:@"sound"];
        }

        if( [userInfo objectForKey:@"Type"] != NULL)
        {
            custom = [userInfo objectForKey:@"Type"];
        }

        // Set your appending text.
        NSString *textToAdd = [NSString stringWithFormat:@":%@", alertMsg];

        NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
        NSString *documentsDirectory = [paths objectAtIndex:0];
        NSString *fileName = [NSString stringWithFormat:@"%@/AccountNotifications.txt", documentsDirectory];
        NSString *fileContents = [[NSString alloc]  initWithContentsOfFile:fileName usedEncoding:nil error:nil];

        NSString *textToFile;

        if (fileContents == NULL)
        {
            textToFile = alertMsg;
        }

        // Here you append new text to the existing one
        if (fileContents != NULL)
        {
            textToFile = [fileContents stringByAppendingString:textToAdd];
        }

        // Here you save the updated text to that file
        paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
        documentsDirectory = [paths objectAtIndex:0];
        fileName = [NSString stringWithFormat:@"%@/AccountNotifications.txt", documentsDirectory];
        NSString *content = textToFile;
        [content writeToFile:fileName atomically:NO encoding:NSStringEncodingConversionAllowLossy error:nil];

        NSArray *fileData = [textToFile componentsSeparatedByString:@":"];

        NSMutableArray *tableDataFromFile;
        tableDataFromFile = [[NSMutableArray alloc] init];

        int i = 0;

        for (i = 1; i < [fileData count]; i++)
        {
            [tableDataFromFile addObject:fileData[i]];
        }

        NotificationViewController *vc = [[NotificationViewController alloc] initWithNibName:@"NotificationViewController" bundle:nil];
        vc.tableData = tableDataFromFile;

        UIViewController *root = self.mainNavController.topViewController;
        NSArray *vcs = [NSArray arrayWithObjects:root, vc, nil];
        [self.mainNavController setViewControllers:vcs animated:YES];
    }
        // app was already in the foreground
    else
    {
        while (done == FALSE)
        {

        }

        NSDictionary *apsInfo = [userInfo objectForKey:@"aps"];

        NSString *alertMsg = @"";
        NSString *badge = @"";
        NSString *sound = @"";
        NSString *custom = @"";

        if( [apsInfo objectForKey:@"alert"] != NULL)
        {
            alertMsg = [apsInfo objectForKey:@"alert"];
        }


        if( [apsInfo objectForKey:@"badge"] != NULL)
        {
            badge = [apsInfo objectForKey:@"badge"];
        }


        if( [apsInfo objectForKey:@"sound"] != NULL)
        {
            sound = [apsInfo objectForKey:@"sound"];
        }

        if( [userInfo objectForKey:@"Type"] != NULL)
        {
            custom = [userInfo objectForKey:@"Type"];
        }

        // Set your appending text.
        NSString *textToAdd = [NSString stringWithFormat:@":%@", alertMsg];

        NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
        NSString *documentsDirectory = [paths objectAtIndex:0];
        NSString *fileName = [NSString stringWithFormat:@"%@/AccountNotifications.txt", documentsDirectory];
        NSString *fileContents = [[NSString alloc]  initWithContentsOfFile:fileName usedEncoding:nil error:nil];

        NSString *textToFile;

        if (fileContents == NULL)
        {
            textToFile = alertMsg;
        }

        // Here you append new text to the existing one
        if (fileContents != NULL)
        {
            textToFile = [fileContents stringByAppendingString:textToAdd];
        }

        // Here you save the updated text to that file
        paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
        documentsDirectory = [paths objectAtIndex:0];
        fileName = [NSString stringWithFormat:@"%@/AccountNotifications.txt", documentsDirectory];
        NSString *content = textToFile;
        [content writeToFile:fileName atomically:NO encoding:NSStringEncodingConversionAllowLossy error:nil];

        NSArray *fileData = [textToFile componentsSeparatedByString:@":"];

        NSMutableArray *tableDataFromFile;
        tableDataFromFile = [[NSMutableArray alloc] init];

        int i = 0;

        for (i = 1; i < [fileData count]; i++)
        {
            [tableDataFromFile addObject:fileData[i]];
        }

        NotificationViewController *vc = [[NotificationViewController alloc] initWithNibName:@"NotificationViewController" bundle:nil];
        vc.tableData = tableDataFromFile;

        UIViewController *root = self.mainNavController.topViewController;
        NSArray *vcs = [NSArray arrayWithObjects:root, vc, nil];
        [self.mainNavController setViewControllers:vcs animated:YES];

    }
            // app was just brought from background to foreground


}

有人可以帮我解决这个问题吗？一旦 didFinishLaunchingWithOptions 完成，布尔值 did 就会设置为 true。我只希望如果在应用程序根本没有运行时按下通知，则 notificationviewcontroller 打开并显示通知。

您应该在代码中添加这样的内容：

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

        NSDictionary *remoteNotif = [launchOptions objectForKey: UIApplicationLaunchOptionsRemoteNotificationKey];

        //Accept push notification when app is not open
        if (remoteNotif) {      
            [self handleRemoteNotification:application userInfo:remoteNotif];
            return YES;
        }

        return YES;
    }

您可以将逻辑从didReceiveRemoteNotification到一些通用函数并从两个地方调用该函数。仅当用户通过点击通知打开应用程序时，此功能才有效。如果用户通过点击应用程序图标打开应用程序，通知数据将不会到达应用程序。