问题描述

我实现了 Firebase 并测试了 Firebase 通知.当应用程序在前台时我没有问题，我实现了一个扩展 FirebaseMessagingService 的服务并处理 onMessageReceived

I implemented Firebase and testing the Firebase notifications. When the app is in the foreground I don't have problems, I implemented a service that extends FirebaseMessagingService and handle the message and data in onMessageReceived

当应用程序处于后台时我遇到问题，我想发送一个通知以打开特定活动并执行我计划执行的操作，而不仅仅是打开应用程序.

I have problems when the app is in background, I would like to send a notification that opens a specific activity and does what I schedule to do, not just opening the App.

我按照 Firebase 指南中的说明进行操作，但无法启动特定活动.

I did as described on the Firebase guide, but I'm not able to start the specific activity.

这里是清单:

<activity android:name=".BasicNotificationActivity">
            <intent-filter>
                <action android:name="OPEN_ACTIVITY_1" />
                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>

这里是 Firebase 控制台.我必须在这些字段中写什么才能打开我的BasicNotificationActivity"?

And here the Firebase Console. What do I have to write in those fields to open my "BasicNotificationActivity"?

推荐答案

这是这个问题的重复:Firebase FCM 通知 click_action 有效负载

但是这个问题的作者接受的答案只是表明 Firebase 控制台是不可能的，但它是 - 有一个简单的解决方法.这个 diidu 的回答对同一问题的解释解释了我将使用的解决方法.

But the answer that was accepted by the author of this question just states that it is not possible with Firebase Console, but it is - with an easy workaround. This answer by diidu to the same question explains the workaround I would use.

更新:
详细说明他的答案:

UPDATE:
To elaborate on his answer:

添加一个辅助类(或以某种方式实现 startActivity() 方法):

Add a helper class (or implement startActivity() method somehow):

public class ClickActionHelper {
    public static void startActivity(String className, Bundle extras, Context context){
        Class cls;
        try {
            cls = Class.forName(className);
        }catch(ClassNotFoundException e){
            //means you made a wrong input in firebase console
        }
        Intent i = new Intent(context, cls);
        i.putExtras(extras);
        context.startActivity(i);
    }
}

在应用的启动器活动中，调用一个方法来检查 onCreate() 和 onNewIntent() 中的任何新意图 (onNewIntent() 仅在使用单顶标志启动 Activity 时才调用而不是 onCreate()):

In the launcher-activity of your app, call a mehtod to check any new intents in onCreate() and onNewIntent() (onNewIntent() is only called instead of onCreate() if Activity is launched with single-top flag):

@Override
protected void onCreate(Bundle bundle) {
    [...]
    checkIntent(getIntent());
 }

@Override
protected void onNewIntent(Intent intent) {
    super.onNewIntent(intent);
    [...]
    checkIntent(intent);
}

public void checkIntent(Intent intent) {
       if (intent.hasExtra("click_action")) {
        ClickActionHelper.startActivity(intent.getStringExtra("click_action"), intent.getExtras(), this);
       }
}

而在onMessageReceived()中:

 public void onMessageReceived(RemoteMessage remoteMessage) {
     Map<String, String> data = remoteMessage.getData();        
     if (data.containsKey("click_action")) {
         ClickActionHelper.startActivity(data.get("click_action"), null, this);
     }
 }

要使用 firebase 控制台发送通知，请将键值对作为自定义数据，如下所示:

To send a notification with firebase console, put a key-value-pair as custom data like this:

Key: click_action
Value: <fully qualified classname of your activity>

现在，当收到并点击通知时，它将打开您的活动.如果您的应用程序在前台，它也会立即更改为活动 - 询问用户是否想进入此活动可能会很好(通过在 onMessageReceived() 中显示一个对话框).

Now when a notification is received and clicked on, it will open your activity. If your app is in foreground, it will also immediately change to the activity - it would probably be good to ask the user if he wants to go to this activity or not (by showing a dialog in onMessageReceived()).

这篇关于Firebase 控制台:如何为通知指定 click_action的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持跟版网！