我试图通过蓝牙从Android设备连接到HC-06。在使用之前我设法让它工作:
bluetoothSocket = (BluetoothSocket) bluetoothDevice.getClass().getMethod("createRfcommSocket", new Class[] {int.class}).invoke(this.bluetoothDevice,1);
问题是它只能工作一次。当我断开并关闭输入和输出流然后关闭套接字,然后尝试重新连接它给我这个错误:
D/BluetoothSocket: connect(), SocketState: INIT, mPfd: {ParcelFileDescriptor: FileDescriptor[55]}
D/BluetoothSocket: close() in, this: android.bluetooth.BluetoothSocket@2d5fa8b, channel: 1, state: INIT
D/BluetoothSocket: close() this: android.bluetooth.BluetoothSocket@2d5fa8b, channel: 1, mSocketIS: android.net.LocalSocketImpl$SocketInputStream@39f43768, mSocketOS: android.net.LocalSocketImpl$SocketOutputStream@184d7781mSocket: android.net.LocalSocket@222b6026 impl:android.net.LocalSocketImpl@727b467 fd:FileDescriptor[55]
D/BluetoothSocket: Closing mSocket: android.net.LocalSocket@222b6026 impl:android.net.LocalSocketImpl@727b467 fd:FileDescriptor[55]
W/System.err: java.io.IOException: read failed, socket might closed or timeout, read ret: -1
W/System.err: at android.bluetooth.BluetoothSocket.readAll(BluetoothSocket.java:739)
W/System.err: at android.bluetooth.BluetoothSocket.waitSocketSignal(BluetoothSocket.java:716)
W/System.err: at android.bluetooth.BluetoothSocket.connect(BluetoothSocket.java:482)
W/System.err: at com.example.work.dmm.clientBluetoothConnection.run(clientBluetoothConnection.java:65)
我试图搜索问题并发现各种帖子说应该使用createRfcommSocketToServiceRecord()。我尝试过这个:
ParcelUuid[] uuids = bluetoothDevice.getUuids();
UUID uuid = uuids[0].getUuid();
bluetoothSocket = bluetoothDevice.createRfcommSocketToServiceRecord(uuid);
但这根本不起作用。我不知道从哪里去,所以任何帮助表示赞赏。
断开连接然后重新连接也有同样的问题我得到一个错误,但在我的情况下有一个广播接收器接收蓝牙适配器重新打开时的动作。这是破坏适配器完全重新开启的原因所以我删除了那部分代码并且它工作...在断开连接后重新连接它工作正常。