2020年8月4日 01:07:48go评论94阅读模式

英文:

Android FCM working partly while app is killed

问题

以下是您要翻译的内容：

我在我的 MyFirebaseMessagingService.java 中有两种通知构建器，一种传递名为 'lecture_date' 的字符串，并在单击时打开 Lectures_graph.class，而另一种传递名为 'web_url' 的字符串，并在单击时打开 webview_base.class。

我想要实现的目标是：即使应用程序被关闭，也要完全工作的 FCM 通知，通知在单击后必须打开活动（带有额外信息）。

我目前的进展：我可以接收通知以打开 Lectures_graph.class，并带有意图附加项，一切都加载并正常工作。即使我接收到打开 webview_base.class 活动的通知，单击通知时什么都不会发生。

可能有一件事情指向问题 - Logcat 经常告诉我：

E/FirebaseMessaging: 通知挂起意图已取消

我使用 PHP 发送通知（该代码是 100% 正确和工作的），下面的代码代表了发送给 webview_base.class 活动的 JSON 的想法。要发送通知以打开 Lectures_graph.class 活动，我只需将 click_action 从 "OPEN_ACTIVITY_WEBVIEW" 更改为 "OPEN_ACTIVITY_LECTURES" 并更改数据有效载荷。用于 webview_base.class 活动的 PHP 发送这样的数据：

$msg = array
    (
        'body'  => 'test body',
        'title'     => "test title",
        'click_action' => 'OPEN_ACTIVITY_WEBVIEW',
        'channelId' => "newsfeed",
        'vibrate'   => 1,
        'sound'     => 1
        
    );


//通过主题发送通知
$fields = array
    (
        "data" => [
            'web_url' => $_POST['notification_url']
        ],
        'notification'          => $msg,
        'to'  => '/topics/test'
    );

这是我的整个 Android Studio 清单文件：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    package="secret">

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="com.android.launcher.permission.INSTALL_SHORTCUT"/>
    <uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
    <uses-permission android:name="android.permission.WAKE_LOCK" />

    <supports-screens
        android:smallScreens="true"
        android:normalScreens="true"
        android:largeScreens="true"
        android:anyDensity="true" />

    <application
        android:allowBackup="false"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:theme="@style/AppTheme.CustomTheme"
        android:usesCleartextTraffic="true"
        tools:targetApi="m">

        <activity
            android:name=".systems.webview_activity.webview_base"
            android:configChanges="orientation|screenSize">
            <intent-filter>
                <category android:name="android.intent.category.BROWSABLE" />
                <action android:name="android.intent.action.VIEW" />
                <data android:scheme="file" />
                <data android:mimeType="*/*" />
                <data android:pathPattern=".*\.kdb" />
                <data android:host="*" />

                <!-- 即使此方法适用于 Lectures_graph 活动，但对于此方法无效 -->
                <action android:name="OPEN_ACTIVITY_WEBVIEW" />
                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
        <activity
            android:name=".systems.lectures.Lectures_graph"
            android:configChanges="keyboardHidden|screenSize"
            android:label="@string/title_lectures_graph"
            >
            <intent-filter>

                <!-- 此意图过滤器对于提供在我的 PHP 文件中的 click_action 的正确响应 -->
                <action android:name="OPEN_ACTIVITY_LECTURES" />
                <action android:name="android.intent.action.CREATE_SHORTCUT" />
                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
        <activity
            android:name=".SplashScreen"
            android:configChanges="keyboardHidden|orientation|screenSize" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name=".NoInternetConnection"
            android:configChanges="keyboardHidden|orientation|screenSize" />
        <activity
            android:name="secret.systems.about.about_app"
            android:configChanges="orientation|keyboardHidden|screenSize"
            android:theme="@style/FullscreenTheme" />
        <activity
            android:name=".MainActivity"
            android:launchMode="singleTask"
            android:configChanges="orientation|keyboardHidden|screenSize">
        </activity>

        <service
            android:name="secret.services.MyFirebaseMessagingService"
            android:enabled="true"
            android:exported="false">
            <intent-filter>
                <action android:name="com.google.firebase.MESSAGING_EVENT" />
            </intent-filter>
        </service>
    </application>

</manifest>

MyFirebaseMessagingService.java：

public class MyFirebaseMessagingService extends FirebaseMessagingService {

    private static final String TAG = "MyFirebaseMsgService";

    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {

        // 检查消息是否包含通知负载。
        if (remoteMessage.getNotification() != null) {
            Log.d(TAG, "Message Notification Body: " + remoteMessage.getNotification().getBody());

            // 从通知中获取键/值
            String lectureDate = remoteMessage.getData().get("lecture_date");
            String web_url = remoteMessage.getData().get("web_url");

            if(lectureDate != null)sendLecturesNotification(remoteMessage.getNotification().getTitle(), remoteMessage.getNotification().getBody(), lectureDate);
            else if(web_url != null) sendNotificationWithURL(remoteMessage.getNotification().getTitle(), remoteMessage.getNotification().getBody(), web_url);
            else Log.e(TAG, "Message.notification is empty!");
        }
    }

    @Override
    public void onNewToken(@NonNull String token) {
        Log.d

<details>
<summary>英文:</summary>

I have 2 kinds of notification builders in my MyFirebaseMessagingService.java, one passes string called &#39;lecture_date&#39; and opens Lectures_graph.class while the other one passes string called &#39;web_url&#39; and opens webview_base.class when clicked.

What i want to achieve : fully working FCM notifications even when app is killed, notifications must open activity (with extras) once they are clicked.

How far i am : I can receive notifications to open Lectures_graph.class with intent extras, everything loads and works just fine. Even if i receive notifications for webview_base.class activity, nothing happens when i click on notification. 

There might be one thing that points to problem - Logcat often tells me this :

    E/FirebaseMessaging: Notification pending intent canceled

Im using PHP to send out notifications (that code is 100% correct and working), code below shows represents the idea of JSON sent out for webview_base.class activity. To send out notifications for Lectures_graph.class activity, i just have to swap click_action from &quot;OPEN_ACTIVITY_WEBVIEW&quot; to &quot;OPEN_ACTIVITY_LECTURES&quot; and change the data payload. PHP for webview_base.class activity sends away such data :

    $msg = array
    	(
    		&#39;body&#39;  =&gt; &#39;test body&#39;,
    	    &#39;title&#39;     =&gt; &quot;test title&quot;,
    	    &#39;click_action&#39; =&gt; &#39;OPEN_ACTIVITY_WEBVIEW&#39;,
    	    &#39;channelId&#39; =&gt; &quot;newsfeed&quot;,
    	    &#39;vibrate&#39;   =&gt; 1,
    	    &#39;sound&#39;		=&gt; 1
    	    
    	);
    
    
    //sends notifications via topics
    $fields = array
    	(
    	    &quot;data&quot; =&gt; [
    	        &#39;web_url&#39; =&gt; $_POST[&#39;notification_url&#39;]
    	    ],
    	    &#39;notification&#39;          =&gt; $msg,
    	    &#39;to&#39;  =&gt; &#39;/topics/test&#39;
    	);

This is my whole manifest file from Android studio :


    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;&lt;manifest xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
        xmlns:tools=&quot;http://schemas.android.com/tools&quot;
        package=&quot;secret&quot;&gt;
        
        
        &lt;uses-permission android:name=&quot;android.permission.INTERNET&quot; /&gt;
        &lt;uses-permission android:name=&quot;android.permission.WRITE_EXTERNAL_STORAGE&quot; /&gt;
        &lt;uses-permission android:name=&quot;android.permission.READ_EXTERNAL_STORAGE&quot; /&gt;
        &lt;uses-permission android:name=&quot;android.permission.ACCESS_NETWORK_STATE&quot; /&gt;
        &lt;uses-permission android:name=&quot;com.android.launcher.permission.INSTALL_SHORTCUT&quot;/&gt;
        &lt;uses-permission android:name=&quot;com.google.android.c2dm.permission.RECEIVE&quot; /&gt;
        &lt;uses-permission android:name=&quot;android.permission.WAKE_LOCK&quot; /&gt;
        
        &lt;supports-screens
            android:smallScreens=&quot;true&quot;
            android:normalScreens=&quot;true&quot;
            android:largeScreens=&quot;true&quot;
            android:anyDensity=&quot;true&quot; /&gt;
        
        &lt;application
            android:allowBackup=&quot;false&quot;
            android:icon=&quot;@mipmap/ic_launcher&quot;
            android:label=&quot;@string/app_name&quot;
            android:roundIcon=&quot;@mipmap/ic_launcher_round&quot;
            android:theme=&quot;@style/AppTheme.CustomTheme&quot;
            android:usesCleartextTraffic=&quot;true&quot;
            tools:targetApi=&quot;m&quot;&gt;
            &lt;activity
                android:name=&quot;.systems.webview_activity.webview_base&quot;
                android:configChanges=&quot;orientation|screenSize&quot;&gt;
                &lt;intent-filter&gt;
                    &lt;category android:name=&quot;android.intent.category.BROWSABLE&quot; /&gt;
                    &lt;action android:name=&quot;android.intent.action.VIEW&quot; /&gt;
                    &lt;data android:scheme=&quot;file&quot; /&gt;
                    &lt;data android:mimeType=&quot;\*/\*&quot; /&gt;
                    &lt;data android:pathPattern=&quot;.*\\.kdb&quot; /&gt;
                    &lt;data android:host=&quot;*&quot; /&gt;
        
    
    //even if this method worked with Lectures_graph activity
    //it doesnt work with this one
    
                    &lt;action android:name=&quot;OPEN_ACTIVITY_WEBVIEW&quot; /&gt;
                    &lt;category android:name=&quot;android.intent.category.DEFAULT&quot; /&gt;
                &lt;/intent-filter&gt;
            &lt;/activity&gt;
            &lt;activity
                android:name=&quot;.systems.lectures.Lectures_graph&quot;
                android:configChanges=&quot;keyboardHidden|screenSize&quot;
                android:label=&quot;@string/title_lectures_graph&quot;
                &gt;
                &lt;intent-filter&gt;
    
    //this intent filter provides correct response
    //to click_action which is provided in my PHP file
    
    
                    &lt;action android:name=&quot;OPEN_ACTIVITY_LECTURES&quot; /&gt;
                    &lt;action android:name = &quot;android.intent.action.CREATE_SHORTCUT&quot; /&gt;
                    &lt;category android:name=&quot;android.intent.category.DEFAULT&quot; /&gt;
                &lt;/intent-filter&gt;
            &lt;/activity&gt;
            &lt;activity
                android:name=&quot;.SplashScreen&quot;
                android:configChanges=&quot;keyboardHidden|orientation|screenSize&quot; &gt;
            &lt;intent-filter&gt;
                &lt;action android:name=&quot;android.intent.action.MAIN&quot; /&gt;
                &lt;category android:name=&quot;android.intent.category.LAUNCHER&quot; /&gt;
            &lt;/intent-filter&gt;
            &lt;/activity&gt;
            &lt;activity
                android:name=&quot;.NoInternetConnection&quot;
                android:configChanges=&quot;keyboardHidden|orientation|screenSize&quot; /&gt;
            &lt;activity
                android:name=&quot;secret.systems.about.about_app&quot;
                android:configChanges=&quot;orientation|keyboardHidden|screenSize&quot;
                android:theme=&quot;@style/FullscreenTheme&quot; /&gt;
            &lt;activity
                android:name=&quot;.MainActivity&quot;
                android:launchMode=&quot;singleTask&quot;
                android:configChanges=&quot;orientation|keyboardHidden|screenSize&quot;&gt;
        
            &lt;/activity&gt;
        
            &lt;service
                android:name=&quot;secret.services.MyFirebaseMessagingService&quot;
                android:enabled=&quot;true&quot;
                android:exported=&quot;false&quot;&gt;
                &lt;intent-filter&gt;
                    &lt;action android:name=&quot;com.google.firebase.MESSAGING_EVENT&quot; /&gt;
                &lt;/intent-filter&gt;
            &lt;/service&gt;
        &lt;/application&gt;
        
        &lt;/manifest&gt;

MyFirebaseMessagingService.java:

    public class MyFirebaseMessagingService extends FirebaseMessagingService {
    
        private static final String TAG = &quot;MyFirebaseMsgService&quot;;
    
        @Override
        public void onMessageReceived(RemoteMessage remoteMessage) {
    
            // Check if message contains a notification payload.
            if (remoteMessage.getNotification() != null) {
                Log.d(TAG, &quot;Message Notification Body: &quot; + remoteMessage.getNotification().getBody());
    
                //get key/value from notification
                String lectureDate = remoteMessage.getData().get(&quot;lecture_date&quot;);
                String web_url = remoteMessage.getData().get(&quot;web_url&quot;);
    
                if(lectureDate != null)sendLecturesNotification(remoteMessage.getNotification().getTitle(), remoteMessage.getNotification().getBody(), lectureDate);
                else if(web_url != null) sendNotificationWithURL(remoteMessage.getNotification().getTitle(), remoteMessage.getNotification().getBody(), web_url);
                else Log.e(TAG, &quot;Message.notification is empty!&quot;);
            }
        }
    
        @Override
        public void onNewToken(@NonNull String token) {
            Log.d(TAG, &quot;Refreshed token: &quot; + token);
        }
    
        private void sendLecturesNotification(String title,String messageBody, String date) {
    
            Intent intent;
            intent = new Intent(this, Lectures_graph.class).putExtra(&quot;lecture_date&quot;, date).setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
    
            PendingIntent pendingIntent = PendingIntent.getActivity(this, ((int) System.currentTimeMillis()) /* Request code */, intent,
                    0);
    
            String channelId = getString(R.string.lectures_channel_id);
            Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
            NotificationCompat.Builder notificationBuilder =
                    new NotificationCompat.Builder(this, channelId)
                            .setSmallIcon(R.drawable.secret)
                            .setContentTitle(title)
                            .setContentText(messageBody)
                            .setAutoCancel(true)
                            .setSound(defaultSoundUri)
                            .setContentIntent(pendingIntent);
    
            NotificationManager notificationManager =
                    (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    
            if (notificationManager != null) {
                notificationManager.notify(((int) System.currentTimeMillis()), notificationBuilder.build());
            }
    
            Log.d(TAG, &quot;Lectures notification built with date:&quot;+date);
        }
    
        private void sendNotificationWithURL(String title, String messageBody, String web_url) {
    
            Intent intent;
            intent = new Intent(this, webview_base.class).putExtra(&quot;web_url&quot;, web_url).setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
    
            PendingIntent pendingIntent = PendingIntent.getActivity(this, ((int) System.currentTimeMillis()) /* Request code */, intent,
                    0);
    
            String channelId = getString(R.string.newsfeed_channel_id);
            Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
            NotificationCompat.Builder notificationBuilder =
                    new NotificationCompat.Builder(this, channelId)
                            .setSmallIcon(R.drawable.secret)
                            .setContentTitle(title)
                            .setContentText(messageBody)
                            .setAutoCancel(true)
                            .setSound(defaultSoundUri)
                            .setContentIntent(pendingIntent);
    
            NotificationManager notificationManager =
                    (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    
            if (notificationManager != null) {
                notificationManager.notify(((int) System.currentTimeMillis()), notificationBuilder.build());
            }
    
            Log.d(TAG, &quot;Webview notification built with URL:&quot;+web_url);
        }
    }


a while ago i was getting an error in logcat that said something like &quot;default FCM channel is not defined&quot;, but im not quite sure thats the problem.

Even if i searched across the whole web, i would like to see better solutions/suggestions for notification (with its payload) handling when app is killed.

</details>


# 答案1
**得分**: 0

这是我修复了噩梦的方法：

由于我无法从通知中打开多个特定活动，为什么不直接打开我的应用程序主类并从那里处理额外的变量呢？

不再为每个想要的活动添加以下内容：

```xml
<intent-filter>
    <action android:name="OPEN_ACTIVITY_???????" />
    <category android:name="android.intent.category.DEFAULT" />
</intent-filter>

我做了这个：

<activity
    android:name=".MainActivity"
    android:launchMode="singleTask"
    android:configChanges="orientation|keyboardHidden|screenSize">
    <intent-filter>
        <action android:name="OPEN_APP" />
        <category android:name="android.intent.category.DEFAULT" />
    </intent-filter>
</activity>

我在通知负载中添加了额外的变量（例如：'activity' => 'webview'），并在我的PHP代码中重命名了click_action。我在MainActivity.class中处理了所有负载，并从那里调用了所需的Android活动。MainActivity 代码：

Bundle extras = getIntent().getExtras();
if(extras == null) {
    Log.e("MainActivity", "No Activities passed in notification extras");
} else {
    //从通知负载中获取要打开的活动
    String activity = extras.getString("activity");
    if( activity != null){
        switch (activity){
            //webview 活动
            case "webview":
                //获取 webview 的 URL
                String web_url = extras.getString("web_url");
                if(web_url != null){
                    finish();
                    startActivity(new Intent(this, webview_base.class).putExtra("web_url", web_url));
                }
                break;
            //lectures 活动
            case "lectures":
                //获取讲座日期
                String lecture_date = extras.getString("lecture_date");
                if(lecture_date != null){
                    finish();
                    startActivity(new Intent(this, Lectures_graph.class).putExtra("lecture_date", lecture_date));
                }
                break;
        }
    }
}

希望这对某天的某人有所帮助。

干杯！

英文:

So i fixed my nightmare and here is how :

Since i cant open more than one specific activity from notifications, why could i just open my apps main class and handle extra variable from there ?

Instead of having for each wanted activity

   &lt;intent-filter&gt;
&lt;action android:name=&quot;OPEN_ACTIVITY_???????&quot; /&gt;
&lt;category android:name=&quot;android.intent.category.DEFAULT&quot; /&gt;
&lt;/intent-filter&gt;

i made this :

&lt;activity
android:name=&quot;.MainActivity&quot;
android:launchMode=&quot;singleTask&quot;
android:configChanges=&quot;orientation|keyboardHidden|screenSize&quot;&gt;
&lt;intent-filter&gt;
&lt;action android:name=&quot;OPEN_APP&quot; /&gt;
&lt;category android:name=&quot;android.intent.category.DEFAULT&quot; /&gt;
&lt;/intent-filter&gt;
&lt;/activity&gt;

I added extra variable to notifications payload (examle : 'activity' => 'webview') and renamed click_action in my PHP code. I handled all payloads in MainActivity.class and called wanted android activity from there. MainActivity code :

Bundle extras = getIntent().getExtras();
if(extras == null) {
Log.e(&quot;MainActivity&quot;, &quot;No Activities passed in notification extras&quot;);
} else {
//get opening activity from notification payload
String activity = extras.getString(&quot;activity&quot;);
if( activity != null){
switch (activity){
//webview activity
case &quot;webview&quot;:
//gets url for webview
String web_url = extras.getString(&quot;web_url&quot;);
if(web_url != null){
finish();
startActivity(new Intent(this, webview_base.class).putExtra(&quot;web_url&quot;, web_url));
}
break;
//lectures activity
case &quot;lectures&quot;:
//gets lecture date
String lecture_date = extras.getString(&quot;lecture_date&quot;);
if(lecture_date != null){
finish();
startActivity(new Intent(this, Lectures_graph.class).putExtra(&quot;lecture_date&quot;, lecture_date));
}
break;
}
}
}

Hope this helps someone, someday..

Cheers.

通过集体智慧和协作来改善编程学习和解决问题的方式。致力于成为全球开发者共同参与的知识库，让每个人都能够通过互相帮助和分享经验来进步。

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