蓝牙发现：
需要权限：
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
主要方法：
client:
void search(SearchCallBack call);
void connect(BluetoothDevice device, ConnectCallBack call);
void sendUTF(String msg, SendUTFCallBack call);
void sendData(byte[] data);
void sendFile(File file, boolean isbreak);
void close();
server:
void listen(ListenCallBack call);
void shutDown();
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udp:
所需权限：
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
