How To Integrate onesignal push notification in Android

October 01, 20201 minute

How To Integrate onesignal push notification in Android

Step: 1 Create a new Project in Android Studio

First, create a new Android Studio project and add the dependencies and plugin. First set up OneSignal in your project.
Add OneSignal dependency and plugin to your build.Gradle app-level.

apply plugin: 'com.onesignal.androidsdk.onesignal-gradle-plugin'
dependencies {
    implementation 'com.onesignal:OneSignal:3.12.6'
}

end add OneSignal dependency to your build.Gradle project-level.

buildscript {
    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:4.1.0'
        classpath 'gradle.plugin.com.onesignal:onesignal-gradle-plugin:[0.12.4, 0.99.99]'
    }
}

Step: 2 Create a new OneSignal Project

login your OneSignal Account than create an app
Enter Your Android Application Name & Select platform Google Android(FCM)
Generate a Firebase Server Key Read the documentation.
Enter your Firebase Server Key & Firebase Sender ID.

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Step: 3 Add Your Created Onesignal App ID

Add OneSignl default config to your build.Gradle app-level.

android {
    compileSdkVersion 30
    buildToolsVersion "30.0.2"

    defaultConfig {
        applicationId "com.myapplication.app"
        minSdkVersion 17
        targetSdkVersion 30
        versionCode 1
        versionName "1.0.0"
        multiDexEnabled true
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
        manifestPlaceholders = [onesignal_app_id: "Enter Your App ID",]
    }

    buildTypes {
        release {
            minifyEnabled true
            shrinkResources true
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
}

The next step is to create the class MyApplication & Declare the class MyApplication in AndroidManifest.xml.

import android.app.Application;
import android.content.Context;
import androidx.multidex.MultiDex;
import com.onesignal.OneSignal;

public class MyApplication extends Application {
    public static Context context;
    @Override

    public void onCreate() {
        super.onCreate();
        context = getApplicationContext();
        context = this;         
        OneSignal.startInit(this) .inFocusDisplaying(OneSignal.OSInFocusDisplayOption.Notification)
                .unsubscribeWhenNotificationsAreDisabled(true)
                .init();
    }

    public static Context getContext() {
        return context;
    }
}

Declare the class MyApplication in AndroidManifest.xml.

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.myapplication.app">
<uses-permission android:name="android.permission.INTERNET"/
<uses-permission
android:name="android.permission.ACCESS_NETWORK_STATE" />

    <application
        android:name="com.myapplication.app.MyApplication"
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:requestLegacyExternalStorage="true"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">

        <activity
    android:name="com.myapplication.app.activity.SplashActivity"
            android:screenOrientation="portrait">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
</manifest>

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