Floating Bubble Overlay

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💡 Overview

Floating Bubble Overlay is a Flutter plugin that allows you to create a floating bubble similar to Facebook Messenger chat heads.
It is fully customizable and built on top of Floating-Bubble-View, optimized for modern Android versions (15).

This version includes enhancements:

• ✔ Tap the bubble → Opens your app
• ✔ Drag the bubble → Shows a closing “X” zone
• ✔ Custom icon support
• ✔ Uses your app icon if no bubbleIcon is provided
• ✔ Smooth drag physics & animations
• ✔ Clean separation of Bubble Options & Notification Options

Note: Only Android is supported. iOS does not allow overlays over other apps.

This animation represents how the plugin behaves

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🔧 Setup

Set Min SDK in your android/app/build.gradle:

android {
    defaultConfig {
        minSdkVersion 21
    }
}

Permissions are automatically injected:

<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
<uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
<uses-permission android:name="android.permission.POST_NOTIFICATIONS" />

Register the Service

<service
    android:name="com.example.floating_bubble_overlay.src.BubbleService"
    android:exported="false"
    android:foregroundServiceType="mediaProjection" />

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💻 Usage

Import:

import 'package:floating_bubble_overlay/floating_bubble_overlay.dart';

Start the bubble:

await FloatingBubbleOverlay.startBubble(
  bubbleIcon: 'bubble_icon',   
  bubbleSize: 64,
  opacity: 1.0,
  enableClose: true,
  enableBottomShadow: true,
  closeBehavior: 1,
);

Stop:

await FloatingBubbleOverlay.stopBubble();

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🎨 Bubble Customization Options

Option	Description	Default	Notes
bubbleIcon	Icon of the bubble	null	Must be inside /android/src/main/res/drawable/ without extension
closeIcon	Icon of close bubble	Default Android icon	Same path rule
bubbleSize	Size of the bubble	60	px
opacity	Transparency	1.0	0.0 → 1.0
distanceToClose	Distance to show X	100	px
closeBehavior	Close behavior enum	1	Drag = X, Tap = open app
enableAnimateToEdge	Auto-align to edges	true	—
keepAliveWhenAppExit	Persistent after exiting	false	—

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📌 Click → Open App

Implemented in:

BubbleCallbackListener.kt

A tap now opens your app without triggering the close zone.

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🧱 Internal Structure

android/
  src/main/kotlin/com/example/floating_bubble_overlay/
    FloatingBubbleOverlayPlugin.kt
    src/
      BubbleService.kt
      BubbleManager.kt
      BubbleOptions.kt
      NotificationOptions.kt
      BubbleCallbackListener.kt

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⚙ Service Notification

Uses NotificationCompat with complete customization:

• Channel ID
• Icon
• Title / Body
• Foreground service compliance (Android 13+)

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📱 Compatibility

Platform	Support
Android	✔
iOS	❌ Overlay not allowed

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🛣 Roadmap

• Add full example UI
• Add foreground-app auto-hide logic
• Support widget-based bubble icons
• x Tap bubble → open app
• x Drag bubble → show close zone

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🧑‍💻 Author

Developed and maintained by Michael Anthony Valdiviezo Maza
Enhanced for production overlay performance and modern Android behavior.