connectGatt后没有调用onConnectionStateChange

时间:2016-12-18 19:23:09

标签: android bluetooth-lowenergy

我有一个按钮来启动连接,然后写入Characaristic。这是代码:

 public void sendMessage(View view) {
    final BluetoothManager bluetoothManager =
            (BluetoothManager) getSystemService(Context.BLUETOOTH_SERVICE);
    mBluetoothAdapter = bluetoothManager.getAdapter();
    BluetoothDevice device = mBluetoothAdapter.getRemoteDevice("Device MAC");
    device.connectGatt(this, false, mGattCallback, 2);
    //connectToDevice(device);
}

private final BluetoothGattCallback mGattCallback = new BluetoothGattCallback() {
            @Override
            public void onConnectionStateChange(BluetoothGatt gatt, int status,
                                                int newState) {...

问题是,未调用onConnectionStateChange。我尝试使用反射来建立连接,如下所述:BluetoothDevice.ConnectGatt() with transport parameter 但它不起作用。这是我在调试控制台中得到的结果:

  

D / BluetoothGatt:onClientRegistered() - status = 0 clientIf = 12   D / BluetoothGatt:onClientConnectionState() - status = 0 clientIf = 12 device = 8E:4D:4B:10:AC:E6   D / BluetoothGatt:onClientConnParamsChanged() - Device = 8E:4D:4B:10:AC:E6 interval = 6 status = 0   D / BluetoothGatt:onClientConnParamsChanged() - Device = 8E:4D:4B:10:AC:E6 interval = 30 status = 0

有什么建议吗?感谢。

0 个答案:

没有答案