如何检查蓝牙是否以编程方式启用？

import android.bluetooth.BluetoothAdapter;

public boolean isBluetoothEnabled() {
    BluetoothAdapter bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
    if (bluetoothAdapter == null) {
        // 设备不支持蓝牙
        return false;
    }
    return bluetoothAdapter.isEnabled();
}

import CoreBluetooth

func isBluetoothEnabled() -> Bool {
    let centralManager = CBCentralManager()
    switch centralManager.state {
    case .poweredOn:
        return true
    default:
        return false
    }
}

import { BleManager } from 'react-native-ble-plx';

async function isBluetoothEnabled() {
    const manager = new BleManager();
    const state = await manager.checkState();
    return state === 'PoweredOn';
}