# Push Message Integration

{% stepper %}
{% step %}

#### Integrate Firebase Project

To use Push Messages in an Android app, you need to configure the integration between the Hackle Workspace and a Firebase project.

{% content-ref url="/pages/EnrApWvzWfZ7innLv6Le" %}
[Android FCM Integration](/en/external-link/crm-channels/fcm-integration.md)
{% endcontent-ref %}
{% endstep %}

{% step %}

#### Integrate Firebase Cloud Messaging SDK

Complete the Android app setup by following the [Firebase Cloud Messaging Installation Guide](https://firebase.google.com/docs/cloud-messaging/android/client).
{% endstep %}

{% step %}

#### Integrate with Hackle SDK

Follow [SDK Integration](/en/development-guide/android.md) to add the Hackle SDK dependency and initialize the SDK.

The push token is automatically registered when the app is built and launched.

{% hint style="info" %}
Once the SDK integration is complete, push token collection, push reception, and push click handling are automatically enabled.
{% endhint %}
{% endstep %}

{% step %}

#### Test Push Messages

**Check Token**

* Use the [User Identifier guide](/en/development-guide/android/android-user-explorer.md) to check the token configured on the Android device.
* Use the [User Profile guide](/en/user-view/user-profile.md) to check the Android push token assigned to a specific user.

**Test Send**

* Follow the [Push Message test send guide](/en/crm-marketing/push-message-guide/create-campaign.md#id-3-1) to verify Push Messages on an Android device.
  {% endstep %}

{% step %}

#### Push Message Reception

When a push is received, an icon is displayed in the status bar and notification center.

* On Samsung Galaxy Android smartphones, the app icon is displayed.
* On standard Android smartphones or simulators, a white circle icon is displayed.
* If you have customized the push icon, the changed icon is displayed.
  {% endstep %}
  {% endstepper %}

## Deep Link Navigation

Hackle Push Messages support deep link navigation on click. When the activity is opened via a Push Message, you can retrieve the opened deep link information as follows.

{% hint style="info" %}
For more details on Android deep links, see the [Android Deep Link Guide](https://developer.android.com/training/app-links/deep-linking).
{% endhint %}

{% tabs %}
{% tab title="Kotlin" %}

```kotlin
import android.app.Activity
import android.content.Intent
import android.os.Bundle

class ExampleActivity : Activity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstance)
        if (intent != null && !intent.dataString.isNullOrEmpty()) {
            //  Do something ...
            println("link : ${intent?.dataString}")
        }
    }

    override fun onNewIntent(intent: Intent?) {
        super.onNewIntent(intent)
        setIntent(intent)
        if (intent != null && !intent.dataString.isNullOrEmpty()) {
            //  Do something ...
            println("link : ${intent?.dataString}")
        }
    }
}
```

{% endtab %}

{% tab title="Java" %}

```java
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import androidx.annotation.Nullable;

public class ExampleActivity extends Activity {

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Intent intent = getIntent();
        if (intent != null && intent.getDataString() != null) {
            String text = String.format("link : %s", intent.getDataString());
            System.out.println(text);
        }
    }

    @Override
    protected void onNewIntent(Intent intent) {
        super.onNewIntent(intent);
        setIntent(intent);
        if (intent != null && intent.getDataString() != null) {
            String text = String.format("link : %s", intent.getDataString());
            System.out.println(text);
        }
    }
}
```

{% endtab %}
{% endtabs %}

## Change Push Message Icon

{% hint style="info" %}
This feature is supported in Android SDK 2.57.0 and above.
{% endhint %}

Hackle Push Messages support changing the push icon. By assigning a resource to the pre-defined keys in `AndroidManifest.xml`, you can change the push icon using local app resources.

{% hint style="warning" %}
Due to Google policy, icons with color cannot be set as push icons on standard Android smartphones.
{% endhint %}

{% hint style="info" %}
For more details on small\_icon, large\_icon, and color, see the [Android Push Design Guide](https://developer.android.com/design/ui/mobile/guides/home-screen/notifications?hl=ko#notification-header).
{% endhint %}

<table><thead><tr><th width="451.35546875">key</th><th>Description</th></tr></thead><tbody><tr><td><code>io_hackle_android_default_notification_small_icon</code></td><td>Sets the small icon.</td></tr><tr><td><code>io_hackle_android_default_notification_large_icon</code></td><td>Sets the large icon.</td></tr><tr><td><code>io_hackle_android_default_notification_color</code></td><td>Sets the small icon background color.</td></tr></tbody></table>

#### Example

```xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">
    <uses-permission android:name="android.permission.POST_NOTIFICATIONS"/>
    <application
        android:name=".MainApplication"
        >
       ...
       <meta-data
            android:name="io_hackle_android_default_notification_small_icon"
            android:resource="@drawable/ic_push_small"/>

       <meta-data
            android:name="io_hackle_android_default_notification_large_icon"
            android:resource="@drawable/ic_push_large"/>

       <meta-data
            android:name="io_hackle_android_default_notification_color"
            android:resource="@color/pie" />
       ...
    </application>
</manifest>
```

#### Modify Push Message Icon from the Dashboard

When a push icon is configured in the Dashboard, the large icon of the push is modified.

* If a push icon is configured both as a local resource and in the Dashboard, the icon set in the Dashboard takes precedence.

## Push Channel Support

{% hint style="info" %}
This feature is supported in Android SDK 2.58.0 and above.
{% endhint %}

With Hackle Push Messages, you can receive pushes on a pre-declared channel in the app. If a push is received with a channel ID that does not exist in the app, it is received on the default channel provided by Hackle.

{% hint style="info" %}
For how to add a push channel to your app, see the [Android Developer Documentation](https://developer.android.com/develop/ui/views/notifications/channels?hl=ko).

If you want to display a notification popup when a push is received (as on iOS), set the push channel importance to `IMPORTANCE_HIGH`.
{% endhint %}


---

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```
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