如何通过蓝牙在 android 上发送几个字节？

Question

我在 Android 上通过蓝牙发送字节时遇到问题。我从 Whosebug 得到了这段代码：

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]);
}




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

字节一个接一个...但我需要将它们打包发送。我需要使用什么方法？如何做到这一点？

Answer 1

这对我有用：

OutputStream outStream = socket.getOutputStream();
byte[] test = {0x03, 0x40, 0x00, (byte) ch2, (byte) 0xC1, (byte) 0xC0};
outStream.write(test);

如何通过蓝牙在 android 上发送几个字节？

How to sent few Bytes on android via bluetooth?

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