Push Notifications in Android Using OneSignal

Push Notifications in Android Using OneSignal

Push notifications are an essential feature for many mobile apps, allowing for real-time communication with users even when the app isn't running. OneSignal is a popular platform for sending push notifications, and it supports various platforms including Android.

Here's a step-by-step guide to setting up push notifications in Android using OneSignal:

1. Sign up and Create a New App on OneSignal:

  • Sign up for a free account on OneSignal.
  • After signing in, click on "Add a new app" to create a new application.
  • Give your app a name and then select the platform as "Google Android".

2. Set up your Android Project:

a. Add the OneSignal Gradle Plugin:

In your project-level build.gradle:

buildscript { repositories { maven { url 'https://plugins.gradle.org/m2/' } } dependencies { // ... other dependencies classpath 'gradle.plugin.com.onesignal:onesignal-gradle-plugin:[0.12.6, 0.99.99]' } }

In your app-level build.gradle at the top:

apply plugin: 'com.onesignal.androidsdk.onesignal-gradle-plugin'

b. Add OneSignal Dependencies:

Still in the app-level build.gradle:

implementation 'com.onesignal:OneSignal:[4.0.0, 4.99.99]'

c. Manifest Changes:

Add the following permissions above the <application> tag:

<uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.WAKE_LOCK" /> <uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />

Inside the <application> tag:

<meta-data android:name="com.onesignal.NotificationOpened.DEFAULT" android:value="DISABLE" />

3. Initialize OneSignal:

In your Application class or main Activity, initialize OneSignal:

OneSignal.initWithContext(this) OneSignal.setAppId(YOUR_ONESIGNAL_APP_ID)

Replace YOUR_ONESIGNAL_APP_ID with the App ID from the OneSignal dashboard.

4. Handling Notifications:

You can customize how notifications are displayed, handled, or interacted with. For instance, to handle a notification when it's tapped:

OneSignal.setNotificationOpenedHandler(object : OneSignal.OSNotificationOpenedHandler { override fun notificationOpened(result: OSNotificationOpenedResult) { // Handle the result (like opening an activity or showing a dialog) } })

5. Sending Notifications:

You can send notifications directly from the OneSignal dashboard or use their API for server-side integration. The dashboard is more user-friendly for non-developers, whereas the API provides more flexibility for dynamic content or automated systems.

6. Test:

Finally, run your application on a real device (not an emulator) to test push notifications. OneSignal provides test buttons in the dashboard to quickly send a test notification to your app.

Note: OneSignal has detailed documentation and often updates its SDK, so always refer to their official documentation for the most accurate and up-to-date information.

Examples

  1. Implementing OneSignal push notifications in Android:

    Dependencies: Add the OneSignal SDK dependency in your app-level build.gradle file:

    implementation 'com.onesignal:OneSignal:[latest_version]'

    Initialization: Initialize OneSignal in your Application class or the MainActivity:

    class MyApplication : Application() { override fun onCreate() { super.onCreate() // OneSignal initialization OneSignal.startInit(this) .inFocusDisplaying(OneSignal.OSInFocusDisplayOption.Notification) .unsubscribeWhenNotificationsAreDisabled(true) .init() } }

  2. Customizing push notifications with OneSignal:

    Customize the appearance and behavior of push notifications using the OneSignal dashboard or programmatically:

    OneSignal.postNotification( JSONObject( """ { "contents": {"en": "Customized Notification Content"}, "headings": {"en": "Custom Title"}, "android_channel_id": "custom_channel_id", "data": {"key1": "value1", "key2": "value2"} } """ ), null )

  3. Handling deep links in OneSignal notifications in Android:

    To handle deep links, include them in the data payload of the notification:

    OneSignal.postNotification( JSONObject( """ { "contents": {"en": "Deep Link Notification"}, "data": {"click_url": "https://example.com/deep-link"} } """ ), null )

    Handle deep links in your NotificationOpenedHandler:

    OneSignal.setNotificationOpenedHandler { result -> val clickUrl = result.notification.additionalData?.optString("click_url") // Handle deep link }

  4. OneSignal notification grouping in Android:

    Group notifications by setting a unique android_group key in the notification payload:

    OneSignal.postNotification( JSONObject( """ { "contents": {"en": "Grouped Notification Content"}, "android_group": "group_key" } """ ), null )

  5. Silent push notifications with OneSignal in Android:

    Use silent notifications to trigger background tasks without displaying a visible notification:

    OneSignal.postNotification( JSONObject( """ { "contents": {"en": ""}, "data": {"key": "value"}, "android_channel_id": "silent_channel_id" } """ ), null )

More Tags

xcode8 webassembly shoutcast exact-match viewpropertyanimator git-filter-branch for-loop sails.js r-markdown angular-ngselect

More Programming Guides

Other Guides

More Programming Examples