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

问题描述

我将Firebase通知集成到了我的应用程序中，但是我想发送一个通知来打开一个特定的活动，并按照我的计划去做，而不仅仅是打开应用程序。就像通知会推动用户访问Google Play商店一样。

我看到一个代码 Firebase控制台：如何为通知指定click_action ，但是我正在获取初始化变量cls的错误。我试图通过定义cls = null来解决，以清除错误。它无法打开我指定的活动，使用click_action

  public class ClickActionHelper {
 public static void startActivity（String className， Bundle extras，Context context）{
 Class cls = null; 
尝试{cls = Class.forName（className）; 
 
 catch（ClassNotFoundException e）{
 //表示您在Firebase控制台中输入了错误信息
} 
 Intent i = new Intent（context，cls）; 
 i.putExtras（extras）; context.startActivity（ⅰ）; 
} 
} 
  

请问我有什么问题吗？如何获得此功能？

解决方案

如果要打开应用程序并执行特定操作在通知负载中设置click_action，并将其映射到您要启动的Activity中的intent过滤器。例如，将click_action设置为OPEN_ACTIVITY_1以触发意向过滤器，如下所示：

正如react-native-fcm文档中所述，请求后端发送json数据在这样的形式，

  {
 
to：some_device_token，
 $ bcontent_available：true，
notification：{
title：hello，
body：yo，
 click_action：OPEN_ACTIVITY_1//用于您的活动中的意图过滤
}，
 
data：{
extra：juice
} 
 
 
 
 
 
 
在你的mainfest文件中为你的活动添加intent-filter如下
 < intent-filter> 
 < category android：name =android.intent.category.DEFAULT/> 
< / intent-filter> 
  
当您点击通知时，它会打开应用程序并直接转到您在click_action中定义的活动，在这种情况下是OPEN_ACTIVTY_1。在这个活动中，你可以通过以下方式获得数据：
 $ b $ pre $ b $ getIntent getExtras（）; // add these从通知中获取数据的代码行
 String someData = b.getString（someData）; 
  

查看下面的链接获取更多帮助：

Firebase FCM通知click_action有效内容

​​ Firebase onMessageReceived不会在后台应用程序中调用 a>

Firebase控制台：如何为通知指定click_action

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.

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); 
}     
}

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

解决方案

If you want to open your app and perform a specific action [while backgrounded], set click_action in the notification payload and map it to an intent filter in the Activity you want to launch. For example, set click_action to OPEN_ACTIVITY_1 to trigger an intent filter like the following:

As suggested in react-native-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"
}
}

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>

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");

check out below links for more helps:

Firebase FCM notifications click_action payload

Firebase onMessageReceived not called when app in background

Firebase console: How to specify click_action for notifications

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