从 Firebase 通知中打开特定活动 [英] open a specific activity from firebase notification

问题描述

我将 firebase 通知集成到我的应用程序中，但我想发送一个通知来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.就像一个通知，它会促使用户点击它访问 Google Play 商店.

I integrated firebase notification to my application but I would like to send a notification that opens a specific activity and does what I schedule to do, not just opening the App. like a notification that will push the user to visit Google play store on clicking it.

我看到了一个代码 Firebase 控制台:如何指定 click_action对于我使用过的通知，但在初始化变量 cls 时出错.我试图通过定义 cls=null 来解决，以清除错误.使用 click_action 无法打开我指定的活动

I saw a code Firebase console: How to specify click_action for notifications which I used but am getting an error to initialize variable cls. I tried to resolve by defining cls=null, to clear error. It fails to open my specified activity using the click_action

public class ClickActionHelper { 
    public static void startActivity(String className, Bundle extras, Context context){ 
        Class cls=null; 
        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); 
    }     
}

请问我有什么问题吗?我如何让它发挥作用?

please am I getting anything wrong? How do I get this to work?

推荐答案

如果你想打开你的应用程序并执行一个特定的操作 [while backgrounded]，在通知负载中设置 click_action 并将其映射到一个意图过滤器在您要启动的活动中.例如，将 click_action 设置为 OPEN_ACTIVITY_1 以触发如下所示的意图过滤器:

按照 FCM 文档中的建议，要求后端以这样的形式发送 JSON 数据，

As suggested in FCM docs, ask backend to send JSON data in the form like this,

{
    "to": "some_device_token",

    "content_available": true,
    "notification": {
        "title": "hello",
        "body": "yo",
        "click_action": "OPEN_ACTIVITY_1" // for intent filter in your activity
    },

    "data": {
        "extra": "juice"
    }
}

并在您的 mainfest 文件中为您的活动添加意图过滤器，如下所示

and in your mainfest file add intent-filter for your activity as below

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

当您点击通知时，它会打开应用并直接进入您在 click_action 中定义的活动，在本例中为OPEN_ACTIVTY_1".在该活动中，您可以通过以下方式获取数据:

When you click the notification, it will open the app and go straight to activity that you define in click_action, in this case "OPEN_ACTIVTY_1". And inside that activity you can get the data by :

Bundle b = getIntent().getExtras();// add these lines of code to get data from notification
String someData = b.getString("someData");

查看以下链接以获得更多帮助:

Check out below links for more help:

Firebase FCM 通知 click_action 负载

​​当应用在后台时未调用 Firebase onMessageReceived

Firebase 控制台:如何为通知指定 click_action

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