Automatically Launch Your Android App on Device Boot Using Java

Creating an Android app that automatically starts after the device reboots can be essential for many applications, such as reminders, alarms, or persistent background services. This article will guide you through the process of implementing this functionality using Java, and integrating it seamlessly with your app.

Automatically Launch Your Android App on Device Boot – Flutter


To achieve this, you need to:

  1. Create a BroadcastReceiver that listens for the BOOT_COMPLETED action.
  2. Update the MainActivity to handle necessary permissions.
  3. Configure the AndroidManifest.xml to declare permissions and register the receiver.
  4. Handle battery optimization to ensure consistent behavior.

Step-by-Step Guide

Step 1: Create the BroadcastReceiver

The BroadcastReceiver listens for the BOOT_COMPLETED action and starts the main activity of your app when the device boots up.

package com.example.boot;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;

public class autostart extends BroadcastReceiver {
    public void onReceive(Context context, Intent intent) {
        Log.d("Autostart", "Received BOOT_COMPLETED broadcast");

        if (Intent.ACTION_BOOT_COMPLETED.equals(intent.getAction())) {
            Log.d("Autostart", "Starting MainActivity");
            Intent mIntent = new Intent(context, MainActivity.class);

Step 2: Update MainActivity

In MainActivity, request permission to draw overlays, which might be necessary for certain functionalities in modern Android versions.

package com.example.boot;

import android.content.Intent;
import android.os.Build;
import android.os.Bundle; // Add this import statement
import android.provider.Settings;

public class MainActivity extends FlutterActivity {
    protected void onCreate(Bundle savedInstanceState) {

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && !Settings.canDrawOverlays(getApplicationContext())) {
            Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION);
            Uri uri = Uri.fromParts("package", getPackageName(), null);
            startActivityForResult(intent, 7);

Step 3: Configure AndroidManifest.xml

Declare the necessary permissions and register the BroadcastReceiver in your AndroidManifest.xml.

<manifest xmlns:android="">
    <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>

                <action android:name="android.intent.action.MAIN"/>
                <category android:name="android.intent.category.LAUNCHER"/>
        <!-- Don't delete the meta-data below.
             This is used by the Flutter tool to generate -->
            android:value="2" />


                <action android:name="android.intent.action.BOOT_COMPLETED" />
                <action android:name="android.intent.action.QUICKBOOT_POWERON" />
                <category android:name="android.intent.category.DEFAULT"/>


Step 4: Handle Battery Optimization

Modern Android versions come with aggressive battery optimization techniques that might prevent your app from receiving the BOOT_COMPLETED broadcast. Ensure users disable battery optimization for your app to maintain consistent behavior.

Here’s how to prompt users to disable battery optimization:

import android.content.Context;
import android.content.Intent;
import android.os.Build;
import android.provider.Settings;

public class BatteryOptimizationHelper {

    public static void requestDisableBatteryOptimization(Context context) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            Intent intent = new Intent();
            String packageName = context.getPackageName();
            if (!Settings.canDrawOverlays(context)) {
                intent.setData(Uri.parse("package:" + packageName));


With these steps, your Android app will automatically launch when the device is restarted. It’s essential to handle user consent appropriately and consider the impact of battery optimization settings on your app’s behavior.

By following this guide, you can enhance the functionality of your Android application to provide a better user experience through persistent operations.

Additional Resources

Hey folks, I'm Vivek Kumar Pandey, a software engineer with a passion for crafting elegant solutions to complex problems. From the bustling streets of Mumbai to the heart of Bangalore's tech scene, I've journeyed through the world of programming, leaving my mark one line of code at a time. Join me as I continue to explore, innovate, and push the boundaries of what's possible in the digital realm.

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