android - 如何在 Android 中通过蓝牙发送十六进制值

Question

我想通过蓝牙/SPP 在 android 中发送一个十六进制字符串我试过这个:

out = sock.getOutputStream();

String myHexString = Integer.toHexString(80) + " "
        + Integer.toHexString(2) + " " + Integer.toHexString(0)
        + " " + Integer.toHexString(48);

发送这个字符串:

out.write(myHexString.getBytes());

但是没用...

有什么帮助吗？

Answer 1

问题解决了:

private boolean connected = false;
private BluetoothSocket sock;
private InputStream in;
private OutputStream out;

zee = BluetoothAdapter.getDefaultAdapter().getRemoteDevice(
        "XX:XX:XX:XX:XX:XX");
    m = zee.getClass().getMethod("createRfcommSocket",
        new Class[] { int.class });
    sock = (BluetoothSocket) m.invoke(zee, Integer.valueOf(1));
    sock.connect();
    in = sock.getInputStream();
    out = sock.getOutputStream();

char[] test = { 0x55, 0x0, 0x0, 0x0, 0x0, 0x50, 0x2, 0x0,
        0x30, 0xD7 };

for(int k=0; k < test.lenght; k++){
new DataOutputStream(sock.getOutputStream()).writeByte(test[k]);
}