Android BLE：如何检查绑定的 BLE 设备是否可用于连接

Question

我目前正在测试 BLE 的葡萄糖概况。为了获得血糖记录，必须首先绑定 BLE 血糖仪。绑定设备后，在执行 startLeScan.

时，我在 onLeScan 回调中不再获得此设备

不过，我可以使用 BluetoothAdapter.getDefaultAdapter().getBondedDevices();

获取所有绑定 BLE 设备的列表

现在我想过滤当前在 range/available 中的绑定设备。

Answer 1

要检查 range/available 中是否有设备，您需要扫描，因此这不是适合您的解决方案，因为您说由于某种原因未检测到它们。

因此，您可以尝试通过知道地址或名称直接连接到绑定设备。

    Set<BluetoothDevice> myBondedDevices = mBluetoothAdapter.getBondedDevices();
    String MAC = "your device Adress"
    for(BluetoothDevice mydevice:myBondedDevices ){
        Log.i("BondedInfo", MAC + "   " + mydevice.getAddress());
        if(mydevice.getAddress().equals(MAC)){
            mydevice.connectGatt(mycontext,true,mygattcallback);
            break;
        }

    }

或者最合适的近似值（根据我自己）：

实现检测绑定并在设备绑定完成时连接的广播接收器：

    BroadcastReceiver myServiceBroadcast = new BroadcastReceiver() {

    @Override
    public void onReceive(Context context, Intent intent) {
final int state=intent.getIntExtra(BluetoothDevice.EXTRA_BOND_STATE,BluetoothDevice.ERROR);

    switch(state){
        case BluetoothDevice.BOND_BONDING:
            Log.i("Bondind Status:"," Bonding...");
            break;

        case BluetoothDevice.BOND_BONDED:
            Log.i("Bondind Status:","Bonded!!");
            myBluetoothDevice.connectGatt(mycontext, true, myBluetoothGattCallBack);
            break;

        case BluetoothDevice.BOND_NONE:
            Log.i("Bondind Status:","Fail");

            break;
    }     
};

正确注册：

registerReceiver(myServiceBroadcast,new IntenFilter(BluetoothDevice.ACTION_BOND_STATE_CHANGED));

Android BLE：如何检查绑定的 BLE 设备是否可用于连接

Android BLE: How to check if bonded BLE Device is available to connect

android

bluetooth-lowenergy