Question

我找到了一个用于管理服务连接的示例代码。但我不知道如何使用它。

我只在这里写下我不理解的代码，以查看所有代码：

CODE

public int onStartCommand(Intent intent, int flags, int startId) {
    Log.d("popopo", "Onstart Command");
    mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
    if (mBluetoothAdapter != null) {
        device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
        deviceName = device.getName();
        String macAddress = device.getAddress();
        if (macAddress != null && macAddress.length() > 0) {
            connectToDevice(macAddress);
        } else {
            stopSelf();
            return 0;
        }
    }
    String stopservice = intent.getStringExtra("stopservice");
    if (stopservice != null && stopservice.length() > 0) {
        stop();
    }
    return START_STICKY;
}

我在没有服务的情况下正确连接到蓝牙，使用此代码获取设备：

if (BluetoothDevice.ACTION_FOUND.equals(action)) {
    // Get the BluetoothDevice object from the Intent
    BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
    // Add the name and address to an array adapter to show in a ListView
    mArrayAdapter.add(device.getName() + "\n" + device.getAddress());
}

我的问题是：onStartCommand()执行时如何传递我找到的蓝牙设备ID？

当我没有执行ACTION_FOUND时，它尝试连接哪个蓝牙设备？

Answer 1

可能有点晚了，但为了以防万一。如果我没记错的话，有多种方法可以连接到设备，因为它的mac地址。

将设备的地址作为创建意图中的额外地址传递。

在UI活动中

Intent intent=new Intent(this,BluetoothService.class));
intent.putExtra("DEVICE_ADDRESS",device.getAddress());

startService(intent);

在蓝牙服务中

public int onStartCommand(Intent intent, int flags, int startId) {
    String address = intent.getExtras("DEVICE_ADDRESS");

    ###DO SOMETHING WITH ADDRESS HERE###
}

创建一个＆＃39; connectToDevice（字符串地址）＆＃39;您服务中的方法，并从您拥有BroadcastReceiver的任何地方进行调用。

在蓝牙服务中

protected synchronized void connectToDevice(BluetoothDevice device){//Cancells any threads attempting to connect and starts a new connectThread (new connection)

    if (mConnectThread != null) {
        mConnectThread.cancel();
        mConnectThread = null;
        Log.d(TAG,"Cancelled connectThread");
    }


    if (mConnectedThread != null) {
        mConnectedThread.cancel();
        mConnectedThread = null;
        Log.d(TAG,"Cancelled connectedThread");

    }

    mConnectThread = new ConnectThread(device);
    mConnectThread.start();
    Log.d(TAG,"Starting connectThread");
}

在广播接收器中

if (BluetoothDevice.ACTION_FOUND.equals(action)) {
    // Get the BluetoothDevice object from the Intent
    BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
    // Add the name and address to an array adapter to show in a ListView
    mArrayAdapter.add(device.getName() + "\n" + device.getAddress());
    BluetoothService mBluetoothService = new BluetoothService();
    mBluetoothService.connectToDevice(device.getAddress());

}

你应该查看android提供的BluetoothChat example。我认为它显示了你需要的很多东西。

在Android服务上连接蓝牙

1 个答案: