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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.

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.

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:

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:*.*")
}

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:

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

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

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:

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
      }
})

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:

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

@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:

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

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:

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
        }
    }
}

@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

`DTDPushListener` Interface Methods

A Class for Receiving Notification Data (`DTDPushMessage`).

Basic Class Properties

A Class for Handling the Notification Button Taps (`DTDActionButton`)