Question

我正在尝试开发一个连接android和RedBear BLE盾的应用程序。

第一次一切正常。但是，当我第二次尝试连接到设备时，它没有工作。 OnServiceConnected（）第一次调用，但第二次调用它。

如果我杀了应用程序并再次启动它，第一次一切正常，但连接第二次失败。

public TransreceiverInterface registerIntent(Intent intent) {
    Log.d(TAG, "[registerIntent] Trying BluetoothTransreceiver");
    String action = intent.getAction();
    if ("BLUETOOTHLE".equals(action)) {
        Log.d(TAG,
                "[registerIntent] Discovered BLUETOOTHLE ... registering intent");
        device = intent.getParcelableExtra("EXTRAS_DEVICE");
        Log.d(TAG,
                "[registerIntent] Register intent fordevice ["
                        + device.getName() + "] [" + device.getAddress()
                        + "]");

        Log.d(TAG, "[registerIntent] Creating GATT service intent");
        Intent gattServiceIntent = new Intent(context, RBLService.class);
        Log.d(TAG, "[registerIntent] Binding service");

        boolean status = context.getApplicationContext().bindService(
                gattServiceIntent, mServiceConnection,
                Context.BIND_AUTO_CREATE);

        if (status) {
            Log.i(TAG, "Starting Service (just in case)");
            context.startService(gattServiceIntent);

            Log.d(TAG, "[registerIntent] Registering receiver");

            context.registerReceiver(mGattUpdateReceiver,
                    makeGattUpdateIntentFilter());
            Log.d(TAG, "[registerIntent] Registering receiver done");

        } else {
            Log.d(TAG, "[registerIntent] Could not bind service");
            return null;
        }
        return this;
    }
    return null;
}

private final ServiceConnection mServiceConnection = new ServiceConnection() {

    @Override
    public void onServiceConnected(ComponentName componentName,
            IBinder service) {
        Log.d(TAG, "onServiceConnected");

        mBluetoothLeService = ((RBLService.LocalBinder) service)
                .getService();
        if (!mBluetoothLeService.initialize()) {
            Log.e(TAG, "Unable to initialize Bluetooth");
        }
        // Automatically connects to the device upon successful start-up
        // initialization.
        Log.d(TAG, "Connecting Service to device [" + device.getName()
                + "]");
        mBluetoothLeService.connect(device.getAddress());
    }

    @Override
    public void onServiceDisconnected(ComponentName componentName) {
        Log.d(TAG, "onServiceDisconnect called");
        mBluetoothLeService = null;
    }
};

Answer 1

这就是诀窍。

@Override
public void disconnect() {

    serviceReady = false;
    Log.d(TAG, "unregister gatt update receiver");
    context.unregisterReceiver(mGattUpdateReceiver);
    Log.d(TAG, "diconnect BT service");
    mBluetoothLeService.disconnect();
    Log.d(TAG, "closing service connection");
    mBluetoothLeService.close();
    Log.d(TAG, "closing service connection");
    context.getApplicationContext().unbindService(mServiceConnection);

}

绑定服务中的onServiceConnected仅被调用一次

1 个答案: