Android

Android Push Notifications

How to create a project in Firebase and integrate Firebase Services into your application

Push Notifications on Android are sent with the help of the FCM service.

Register and open the project creation window in Firebase.

Click Add project.

Write the name of your project. At this stage, you can also set your own unique project identifier or use the one that Firebase will generate for you automatically.

After creating the project card, create an Android application by clicking on the Android icon.

Register your android package name.

Download the google-services.json file and use it according to the instructions of firebase.

Add firebase dependencies according to the firebase documentation.

Complete the application registration, you will see the project overview section.

Select your application by clicking on it, you will see a gear on the right side, click on it to go to project settings.

Go to the cloud messages section, make sure that the Firebase Cloud Messaging API (V1) is active (if not, activate it).

Go to the general section and copy the value of the Project ID field and paste it into the devtodev web interface.

The Project ID is also available from the Firebase main screen in the project cards. After setting up the application, the card should look like this:

It should have a Project ID and an android icon.

Next, open the push notifications integration settings panel in the application settings section in devtodev service (App → Settings → Push notifications → Push notifications panel). Push edit button (pencil symbol).

You will need to specify the Firebase Project ID and authorize devtodev to send messages and manage messaging subscriptions for your Firebase application. To authorise the application, you must use Google login and password of a user with sufficient access rights to the project on Firebase. After that click Save button.

Messaging Module Integration

The Messaging module is available as an AAR (recommended) and JAR library. The library is available in the MavenCentral and GitHub repository.

1. If you use Gradle for the applications build, add mavenCentral() into gradle.build file of your application and specify the following relationship in dependencies block:

Kotlin

defaultConfig {
    //other existing fields 
    versionName = "1.0" //your app version (required)
}

dependencies {
    // Requirement
    implementation("androidx.appcompat:appcompat:*.*.*")
    implementation("com.google.code.gson:gson:*.*.*")
    implementation("com.google.firebase:firebase-messaging:*.*.*")
    implementation("com.google.android.gms:play-services-ads-identifier:*.*.*")
    
    // if you use AAR (recommended) or JAR downloaded from GitHub, please add:
    implementation(fileTree(mapOf("dir" to "libs", "include" to listOf("*.aar"))))
    
    // or just add the dependency, get the latest version from
    // https://mvnrepository.com/artifact/com.devtodev/android-analytics
    implementation("com.devtodev:android-analytics:*.*.*")
    // https://mvnrepository.com/artifact/com.devtodev/android-messaging
    implementation("com.devtodev:android-messaging:*.*.*")
    
    // Optional (recommended)
    implementation("com.android.installreferrer:installreferrer:*.*")
}

Groovy

defaultConfig {
    //other existing fields 
    versionName "1.0" //your app version (required)
}

dependencies {
    // Requirement
    implementation 'androidx.appcompat:appcompat:*.*.*'
    implementation 'com.google.code.gson:gson:*.*.*'
    implementation 'com.google.android.gms:play-services-ads-identifier:*.*.*'
    implementation 'com.google.firebase:firebase-messaging:*.*.*'
    
    // if you use AAR (recommended) or JAR downloaded from GitHub, please add:
    implementation fileTree(dir: "libs", include: ["*.aar"]) 
    
    // or just add the dependency, get the latest version from
    // https://mvnrepository.com/artifact/com.devtodev/android-analytics
    implementation 'com.devtodev:android-analytics:*.*.*'
    // https://mvnrepository.com/artifact/com.devtodev/android-messaging
    implementation 'com.devtodev:android-messaging:*.*.*'
    
    // Optional (recommended)
    implementation 'com.android.installreferrer:installreferrer:*.*'
}

2. To the app manifest add the following:

<!-- permission.POST_NOTIFICATIONS for API level 33 or higher -->
<uses-permission android:name=“android.permission.POST_NOTIFICATIONS”/>

<application>
        <service
            android:name="com.devtodev.push.internal.logic.DTDFcmMessagingService"
            android:exported="true">
            <intent-filter>
                <action android:name="com.google.firebase.MESSAGING_EVENT"/>
            </intent-filter>
        </service>

        <receiver
            android:name="com.devtodev.push.internal.logic.PushClickReceiver"
            android:enabled="true"
            android:exported="true">
            <intent-filter>
                <action android:name="com.devtodev.android.push.CLICKED" />
            </intent-filter>
        </receiver>
</application>

3. To add a user icon to your push notification and change its color, add the following strings to the manifest file code:

<meta-data
 android:name="com.devtodev.push.default_small_icon"
 android:resource="@drawable/ic_icon_name" />

<meta-data
 android:name="com.devtodev.push.default_small_icon_color"
 android:resource="@color/icon_color" />

To add a large user icon to your push notifications, add:

<meta-data
android:name="com.devtodev.push.default_large_icon"
android:resource="@mipmap/ic_large_icon_name"/>

Example:

<application
    <!-- Your tags -->
    <service
        android:name="com.devtodev.push.internal.logic.DTDFcmMessagingService">
        <intent-filter>
            <action android:name="com.google.firebase.MESSAGING_EVENT" />
        </intent-filter>
    </service>

    <receiver
        android:name="com.devtodev.push.internal.logic.PushClickReceiver"
        android:enabled="true"
        android:exported="true">
        <intent-filter>
            <action android:name="com.devtodev.android.push.CLICKED" />
        </intent-filter>
    </receiver>

    <meta-data
        android:name="com.devtodev.push.default_small_icon"
        android:resource="@drawable/ic_baseline" />

    <meta-data
        android:name="com.devtodev.push.default_small_icon_color"
        android:resource="@color/colorPrimary" />

    <meta-data
        android:name="com.devtodev.push.default_large_icon"
        android:resource="@mipmap/baseline_accessibility_black_18"/>
</application>

4. After the DTDAnalytics initializer, add the DTDMessaging initializer.

Example:

Kotlin

val analyticsConfiguration = DTDAnalyticsConfiguration()
analyticsConfiguration.logLevel = DTDLogLevel.Error

DTDAnalytics.initialize(
    appKey = "projectKey",
    analyticsConfiguration = analyticsConfiguration,
    context = this
)
DTDMessaging.initialize(context = this)

Java

DTDAnalyticsConfiguration analyticsConfiguration = new DTDAnalyticsConfiguration();
analyticsConfiguration.setLogLevel(DTDLogLevel.Error);
DTDAnalytics.INSTANCE.initialize("projectKey",analyticsConfiguration,context);
DTDMessaging.INSTANCE.initialize(context);

5. Subscribe a DTDPushListener to receive information about the DTDMessaging functioning.

Example:

Kotlin

DTDMessaging.setPushListener(object : DTDPushListener {
      override fun onPushServiceRegistrationSuccessful(deviceId: String) {
          //do something
      }
      override fun onPushServiceRegistrationFailed(error: String) {
          //do something
      }
      override fun onPushNotificationReceived(message: Map<String, String?>?) {
          //do something
      }
      override fun onPushNotificationOpened(pushMessage: DTDPushMessage, actionButton: DTDActionButton?) {
          //do something
      }
})

Java

DTDMessaging.INSTANCE.setPushListener(new DTDPushListener() {
    @Override
    public void onPushServiceRegistrationSuccessful(@NonNull String deviceId) {
        //do something            
    }

    @Override
    public void onPushServiceRegistrationFailed(@NonNull String error) {
        //do something
    }

    @Override
    public void onPushNotificationReceived(@Nullable Map<String, String> message) {
        //do something
    }

    @Override
    public void onPushNotificationOpened(@NonNull DTDPushMessage dtdPushMessage, @Nullable DTDActionButton dtdActionButton) {
        //do something
    }
});

6. Call the DTDMessaging.startPushService() method to activate the Messaging module.

Android 13 or higher

When using Android 13 or higher, notifications are disabled by default. The app won’t receive notifications until you request a new permission (POST_NOTIFICATIONS) and the user grants this permission to your app.

For notifications to work properly, add the following line to the manifest file:

<uses-permission android:name=“android.permission.POST_NOTIFICATIONS”/>

You can check the operation of the POST_NOTIFICATIONS permission in your app by inserting this example in the code:

Kotlin

@RequiresApi(33)
private fun notificationPermissionIsGranted(): Boolean {
    val res = context.checkCallingOrSelfPermission(POST_NOTIFICATIONS)
    return res == PackageManager.PERMISSION_GRANTED
}

Java

@RequiresApi(33)
private Boolean notificationPermissionIsGranted() {
    int res = context.checkCallingOrSelfPermission(POST_NOTIFICATIONS);
    return res == PackageManager.PERMISSION_GRANTED;
}

If the check results in a negative answer (access is not granted), call this method:

Kotlin

requestPermissions(arrayOf(Manifest.permission.POST_NOTIFICATIONS), yourCode)

Java

String[] permissionsArr = {Manifest.permission.POST_NOTIFICATIONS};
requestPermissions(permissionsArr, yourCode);

Its execution will call a dialog that in turn will ask the user to opt in:

This code is going to help you get the user’s decision:

Kotlin

override fun onRequestPermissionsResult(
    requestCode: Int,
    permissions: Array<String?>,
    grantResults: IntArray
) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults)
    if (requestCode == yourCode) {
        if (grantResults.isNotEmpty() && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
            //permission is granted
        } else {
            //permission is not granted, notifications are not available
        }
    }
}

Java

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    if (requestCode == yourCode) {
        if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
            //permission is granted
        } else {
            //permission is not granted, notifications are not available
        }
    }
}

Note. In SDK ver. 2.1.5 or higher, if the permission is not granted, you will see this message in the log from DTDMessaging: “Notifications don’t work. Permission android.permission.POST_NOTIFICATIONS is not granted”.

External interface of the DTDMessaging module

Object	Description
DTDMessaging	The main object for push notification initialization.
DTDMessaging.initialize(Context context)	The push notification initialization method.
DTDMessaging.startPushService()	The push notification activation method. It passes the isAllowed current state.
DTDMessaging.pushNotificationsAllowed = true or false	A property responsible for the activation/deactivation of push notifications. Functions as a getter (describes the current state) and a setter (sets the current state). When the state transitions, it sends a pt with isAllowed (true or false) status to the server. The isAllowed flag status is stored in the SDK.
DTDMessaging.setIntent(Intent intent)	A method of passing a user intent to the SDK using PushMessage.
Written in the manifest file <meta-data android:name="com.devtodev.push.default_small_icon" android:resource="@drawable/smallIcon" />	Sets a small custom user icon.
Written in the manifest file <meta-data android:name="com.devtodev.default_small_icon_color" android:resource="@color/colorPrimary" />	Sets a color of the small custom user icon.
Written in the manifest file <meta-data android:name="com.devtodev.push.default_large_icon" android:resource="@mipmap/largeIcon" />	Sets a large custom user icon.
DTDMessaging.getToken()	Returns a push notification registration token (firebaseToken).
DTDMessaging.processPushNotification(Context context, RemoteMessage remoteMessage)	Used to pass the push notification to the FirebaseMessagingService if it was implemented by the client but not by the SDK.
DTDMessaging.setPushListener(DTDPushListener pushListener)	(DTDPushListener pushListener) - sets a listener for push notification event trapping.

DTDPushListener Interface Methods

DTDPushListener Interface Methods	Description
onPushServiceRegistrationSuccessful(String deviceId)	Returns a push notification registration token (firebaseToken).
onPushServiceRegistrationFailed(String error)	Returns errors during push notification registration.
onPushNotificationReceived(Map<String, String> message)	Returns a directory with data for improving your push notifications.
onPushNotificationOpened(DTDPushMessage pushMessage, @Nullable DTDActionButton actionButton)	Returns pushMessage and actionButton if they were tapped.

A Class for Receiving Notification Data (DTDPushMessage).

Basic Class Properties

Property	Type	Description
getData()	Map<String, String>	Complete information sent with the use of a remote push notification.
systemId	Int	The notification ID used in the devtodev system.
getTitle(context:Context)	String?	Returns the selected message title or app name if the former is unavailable.
body	String?	The text body.
group	String?	A group of messages.
getSound(context: Context)	Uri?	Returns the storage path of an audio file.
getSoundName()	String?	The notification sound name.
tag	String?	The notification tag.
color	String?	The notification color.
bigPicture	String?	The notification banner if specified.
actionType	DTDActionType	The property that returns an enum’s DTDActionType value. Possible values: Url - an external link opening Share - content sharing Deeplink - an in-app link opening
actionString	String?	The property that returns an optional action ID.
getIcon(context: Context, userIcon: Int)	Int	The icon resource identifier specified by the user (if specified).
largeIcon	String?	The large notification icon name.
actions	List<DTDActionButton>	The list of action buttons used in the push notification.
isApiSource	Boolean	Specifies whether the push notification was sent using the devtodev API.

A Class for Handling the Notification Button Taps (DTDActionButton)

Property	Type	Description
Id	String?	The property that returns the tapped button ID.
actionString	String?	The property that returns the optional action ID.
actionType	DTDActionType	The property that returns an enum’s DTDActionType value. Possible values: App - a default value Url - an external link opening Share - content sharing Deeplink - an in-app link opening
icon	String?	The property that returns the button’s icon name.
isBackground	Boolean	The button-click app open mode.
text	String?	The property that returns the text of the tapped button.