How to handle BLE reconnection automatically with FastBle?

FastBle includes built-in reconnection logic; configure it using setReConnectCount() during initialization, and the framework will automatically retry connections on failure with specified intervals, as shown in the connect method callbacks.

FastBle vs RxAndroidBle: which is better for Android BLE?

FastBle is simpler and more straightforward for basic to intermediate BLE tasks with a callback-based API, while RxAndroidBle offers reactive programming patterns and might be better for complex data streams. FastBle's strength lies in its ease of use and built-in features like reconnection.

How to scan for specific BLE devices by UUID or name using FastBle?

Use BleScanRuleConfig to set custom scan rules with service UUIDs, device names, or MAC addresses before scanning, as demonstrated in the initialization configuration example with setServiceUuids() and setDeviceName().

Does FastBle support BLE 5.0 features like longer range or higher speed?

FastBle builds on native Android BLE APIs, so it depends on the underlying OS support; the library doesn't explicitly add BLE 5.0 features, meaning you're limited to what Android provides for your device's hardware and version.

How to manage multiple BLE connections and avoid conflicts with FastBle?

FastBle supports multi-device connections out of the box; use methods like getAllConnectedDevice() to track devices and disconnect() to manage individual connections, but ensure proper callback handling to avoid state issues in complex scenarios.

What are common errors in FastBle and how to fix timeout issues?

Common errors include connection timeouts or operation failures; configure timeouts using setConnectOverTime() and setOperateTimeout() during initialization, and check the BleException callbacks for specific failure reasons in the README examples.

Open-Awesome

FastBle

Apache-2.0Java2.4.0

A fast development framework for Android Bluetooth Low Energy (BLE) with simplified APIs for scanning, connecting, reading, writing, and multi-device management.

GitHub

5.5k stars1.2k forks0 contributors

What is FastBle?

FastBle is an open-source Android library that simplifies Bluetooth Low Energy (BLE) development. It wraps the complex native Android BLE APIs into a clean, high-level framework for scanning devices, establishing connections, reading/writing data, and managing multiple BLE peripherals. It solves the problem of verbose and error-prone BLE code by providing a consistent, callback-based interface.

Target Audience

Android developers building applications that communicate with BLE devices, such as IoT sensors, wearables, health monitors, or smart home gadgets. It's especially useful for those who want to avoid the boilerplate and threading complexities of the native Android BLE stack.

Value Proposition

Developers choose FastBle because it dramatically reduces development time for BLE features, handles edge cases like reconnections and timeouts automatically, and supports multi-device scenarios out of the box. Its simple API design and comprehensive documentation make BLE integration more accessible compared to raw Android APIs.

Overview

Android Bluetooth Low Energy (BLE) Fast Development Framework. It uses simple ways to filter, scan, connect, read ,write, notify, readRssi, setMTU, and multiConnection.

Use Cases

Best For

Building Android apps that connect to fitness trackers or heart rate monitors
Developing IoT mobile controllers for smart home BLE devices
Creating data logging applications for BLE sensors in industrial settings
Prototyping BLE-enabled mobile applications quickly
Managing connections to multiple BLE peripherals simultaneously
Handling BLE communication with custom scan and reconnect logic

Not Ideal For

Projects requiring cross-platform BLE support (e.g., iOS or web)
Applications needing direct, low-level control over BluetoothGatt for custom or undocumented BLE features
Environments with strict policies against external repository dependencies like jitpack.io
Use cases where minimal latency is critical and abstraction overhead is unacceptable

Pros & Cons

Pros

Simplified BLE API

Offers easy-to-use methods for scanning, connecting, reading, writing, and notifications, abstracting the verbose native Android BLE APIs as shown in the concise usage examples like BleManager.getInstance().connect().

Multi-Device Management

Supports managing connections with multiple BLE devices simultaneously, demonstrated by methods like getAllConnectedDevice() and features highlighted in the README.

Built-in Reconnection Logic

Includes configurable automatic reconnection with retry counts and intervals, as seen in the setReConnectCount() initialization method and connect callback handling.

Advanced BLE Features

Provides support for RSSI reading, MTU setting, and operation timeouts, detailed in usage sections for readRssi(), setMtu(), and timeout configurations.

Data Handling Utilities

Includes tools like HexUtil for data format conversion and packet splitting for large writes, easing common BLE data manipulation tasks as mentioned in the features.

Cons

Limited Language Support

The primary documentation and wiki are in Chinese, which may hinder non-Chinese speaking developers from accessing comprehensive guides and troubleshooting resources.

Abstraction Overhead

By wrapping native APIs, it can obscure access to low-level BLE features and introduce slight performance latency, potentially limiting fine-grained control for advanced use cases.

Dependency on External Repository

Requires adding jitpack.io to the build.gradle, which might not align with enterprise environments that enforce strict internal repository policies or offline builds.

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