在前台iOS中的App时获取推送通知-Java 学习之路

140

我在我的应用程序中使用推送通知服务 . 当应用程序在后台时，我能够在通知屏幕上看到通知（当我们从iOS设备的顶部向下滑动时显示的屏幕） . 但是如果应用程序在前台是委托方法

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

正在调用，但通知屏幕中不显示通知 .

我想在通知屏幕上显示通知，无论应用程序是在后台还是前台 . 我厌倦了寻找解决方案 . 任何帮助是极大的赞赏 .

14 回答

115

将completionHandler行添加到委托方法为我解决了同样的问题：

//Called when a notification is delivered to a foreground app.
@available(iOS 10.0, *)
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {

completionHandler([.alert, .badge, .sound])
}

回复于 2024-04-29T05:41:16+08:00

如果应用程序在前台运行，则iOS在设计中赢得了't show a notification banner/alert. That' . 但是我们可以通过如下使用_456116来实现它

在接收遥控器时检查应用程序是否处于活动状态
通知 . 如果处于活动状态，则触发UILocalNotification .

if (application.applicationState == UIApplicationStateActive ) {

    UILocalNotification *localNotification = [[UILocalNotification alloc] init];
    localNotification.userInfo = userInfo;
    localNotification.soundName = UILocalNotificationDefaultSoundName;
    localNotification.alertBody = message;
    localNotification.fireDate = [NSDate date];
    [[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
}

迅速：

if application.applicationState == .active {
    var localNotification = UILocalNotification()
    localNotification.userInfo = userInfo
    localNotification.soundName = UILocalNotificationDefaultSoundName
    localNotification.alertBody = message
    localNotification.fireDate = Date()
    UIApplication.shared.scheduleLocalNotification(localNotification)
}

回复于 2024-04-29T05:41:16+08:00

-2

根据apple documentation，是的，您可以在应用运行时显示通知

回复于 2024-04-29T05:41:16+08:00
51
正如@Danial Martine所说，iOS不会显示通知 Banner /警报 . 这是设计的 . 但如果真的必须这样做，那么有一种方法 . 我也是这样做的 .

1.从Parse FrameWork下载解析框架工作

2.进口 #import <Parse/Parse.h>

3.将以下代码添加到didReceiveRemoteNotification方法中
```
- (void)application:(UIApplication *)application
didReceiveRemoteNotification:(NSDictionary *)userInfo
{
    [PFPush handlePush:userInfo];
}
```
PFPush将注意如何处理远程通知 . 如果App位于前台，则会显示警报，否则会在顶部显示通知 .
回复于 2024-04-29T05:41:16+08:00

以下是app处于活动状态（前台或打开）时接收推送通知的代码 . UNUserNotificationCenter documentation

@available(iOS 10.0, *)
func userNotificationCenter(center: UNUserNotificationCenter, willPresentNotification notification: UNNotification, withCompletionHandler completionHandler: (UNNotificationPresentationOptions) -> Void)
{
     completionHandler([UNNotificationPresentationOptions.Alert,UNNotificationPresentationOptions.Sound,UNNotificationPresentationOptions.Badge])
}

如果您需要访问userInfo的通知使用代码： notification.request.content.userInfo

回复于 2024-04-29T05:41:16+08:00

Objective C

enter image description here

对于 iOS 10 ，我们需要在 foreground 中集成 willPresentNotification 方法用于显示通知 Banner .

如果app处于前台模式（活动）

- (void)userNotificationCenter:(UNUserNotificationCenter* )center willPresentNotification:(UNNotification* )notification withCompletionHandler:(void (^)(UNNotificationPresentationOptions options))completionHandler {
    NSLog( @“Here handle push notification in foreground" ); 
    //For notification Banner - when app in foreground

    completionHandler(UNNotificationPresentationOptionAlert);

    // Print Notification info
    NSLog(@"Userinfo %@",notification.request.content.userInfo);
}

回复于 2024-04-29T05:41:16+08:00

-2

如果应用程序在前台运行，则iOS在设计上赢得了't show a notification banner/alert. That' . 您必须编写一些代码来处理应用程序在前台接收通知时的情况 . 您应该以最合适的方式显示通知（例如，将徽章编号添加到 UITabBar 图标，模拟通知中心 Banner 等） .

回复于 2024-04-29T05:41:16+08:00
2

如上所述，您应该使用 UserNotification.framework 来实现此目的 . 但是出于我的目的，无论如何我必须在应用程序中显示它并希望有 iOS 11 样式，所以我创建了一个小帮助器视图，可能对某人有用 .

GitHub iOS 11 Push Notification View .

回复于 2024-04-29T05:41:16+08:00
0
对于任何可能感兴趣的人，我最终创建了一个自定义视图，看起来像顶部的系统推送 Banner ，但添加了一个关闭按钮（小蓝色X）和一个选项来点击消息进行自定义操作 . 它还支持在用户有时间读取/解除旧通知之前到达多个通知的情况（没有限制可以堆积多少...）

链接到GitHub：AGPushNote

The usage is basically on-liner:
```
[AGPushNoteView showWithNotificationMessage:@"John Doe sent you a message!"];
```
在iOS7上它看起来像这样（iOS6具有iOS6的外观和感觉...）
回复于 2024-04-29T05:41:16+08:00

要在应用程序位于前台时显示 Banner 消息，请使用以下方法 .

iOS 10, Swift 3/4 ：

// This method will be called when app received push notifications in foreground
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) 
{
    completionHandler([.alert, .badge, .sound])
}

iOS 10, Swift 2.3 ：

@available(iOS 10.0, *)
func userNotificationCenter(center: UNUserNotificationCenter, willPresentNotification notification: UNNotification, withCompletionHandler completionHandler: (UNNotificationPresentationOptions) -> Void)
{
    //Handle the notification
    completionHandler(
       [UNNotificationPresentationOptions.Alert,
        UNNotificationPresentationOptions.Sound,
        UNNotificationPresentationOptions.Badge])
}

您还必须将您的应用代表注册为通知中心的代表：

import UserNotifications

// snip!

class AppDelegate : UIResponder, UIApplicationDelegate, UNUserNotificationCenterDelegate

// snip!

// set the delegate in didFinishLaunchingWithOptions
UNUserNotificationCenter.current().delegate = self

回复于 2024-04-29T05:41:16+08:00

6

如果您的应用程序处于前台状态，则表示您当前正在使用相同的应用程序 . 所以一般不需要在顶部显示通知 .

但是，如果你想在这种情况下显示通知，你必须创建自定义警报视图或自定义视图，如Toast或其他东西，以向用户显示您已收到通知 .

如果您的应用中有此类功能，您还可以在顶部显示徽章 .

回复于 2024-04-29T05:41:16+08:00

下面的代码将适合您：

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo  {
    application.applicationIconBadgeNumber = 0;             
    //self.textView.text = [userInfo description];
    // We can determine whether an application is launched as a result of the user tapping the action
    // button or whether the notification was delivered to the already-running application by examining
    // the application state.

    if (application.applicationState == UIApplicationStateActive) {                
        // Nothing to do if applicationState is Inactive, the iOS already displayed an alert view.                
        UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Did receive a Remote Notification" message:[NSString stringWithFormat:@"Your App name received this notification while it was running:\n%@",[[userInfo objectForKey:@"aps"] objectForKey:@"alert"]]delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
        [alertView show];          
    }    
}

回复于 2024-04-29T05:41:16+08:00

25

您可以创建自己的模仿 Banner 提醒的通知 .

一种方法是创建一个看起来像 Banner 的自定义uiview，可以设置动画并响应触摸 . 考虑到这一点，您可以使用更多功能创建更好的 Banner .

或者你可以找一个为你做的api，并将它们作为podfiles添加到你的项目中 .

这是我用过的一对夫妇：

https://github.com/terryworona/TWMessageBarManager

https://github.com/toursprung/TSMessages

回复于 2024-04-29T05:41:16+08:00

在你的app委托中使用下面的代码

import UIKit
import UserNotifications
@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterDelegate {
 var currentToken: String?
 var window: UIWindow?
 func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
        // Override point for customization after application launch.
        application.registerForRemoteNotifications()
        let center = UNUserNotificationCenter.current()
        center.requestAuthorization(options: [.alert, .sound, .badge]) { (granted, error) in

            // Enable or disable features based on authorization.
            if granted == true
            {
                print("Allow")
                UIApplication.shared.registerForRemoteNotifications()
            }
            else
            {
                print("Don't Allow")
            }
        }
        UNUserNotificationCenter.current().delegate = self

        return true
    }
func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data){
        let tokenParts = deviceToken.map { data -> String in
            return String(format: "%02.2hhx", data)
        }
        let token = tokenParts.joined()
        currentToken = token  //get device token to delegate variable

    }
 public class var shared: AppDelegate {
        return UIApplication.shared.delegate as! AppDelegate
    }
 func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
         completionHandler([.alert, .badge, .sound])
    }
}

回复于 2024-04-29T05:41:16+08:00

在前台iOS中的App时获取推送通知

14 回答

链接到GitHub：AGPushNote

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