获取Android上可用蓝牙设备的列表

The Bluetooth guide in the Android documentation 解释如下:

为了接收有关发现的每个设备的信息,应用程序必须为ACTION\u FOUND intent注册一个BroadcastReceiver。系统为每个设备广播此意图。intent包含额外字段extra\u DEVICE和extra\u CLASS,这两个字段分别包含一个BluetoothDevice和一个BluetoothClass。

还包括以下示例代码:

@Override
protected void onCreate(Bundle savedInstanceState) {
    ...

    // Register for broadcasts when a device is discovered.
    IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
    registerReceiver(mReceiver, filter);
}

// Create a BroadcastReceiver for ACTION_FOUND.
private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
    public void onReceive(Context context, Intent intent) {
        String action = intent.getAction();
        if (BluetoothDevice.ACTION_FOUND.equals(action)) {
            // Discovery has found a device. Get the BluetoothDevice
            // object and its info from the Intent.
            BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
            String deviceName = device.getName();
            String deviceHardwareAddress = device.getAddress(); // MAC address
        }
    }
};

如果您正在Android上使用蓝牙,我建议您仔细阅读该指南。然后再读一遍;-)

从 ACTION_FOUND documentation :

始终包含额外字段 EXTRA_DEVICE 和 EXTRA_CLASS . 可以包含额外字段 EXTRA_NAME 和/或 EXTRA_RSSI 如果可用。

EXTRA_DEVICE can be used to obtain the BluetoothDevice that was found 通过以下代码:

BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);