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我和我的团队正在尝试让我们的android应用程序向我们的arduino发送一个信号，并带有蓝牙外壳。无论如何，信号并不需要有意义，只要arduino知道已经发送了一个信号。我已经看到了许多关于这方面的在线资料，但似乎没有一个似乎是一致的，它似乎并没有为我工作。Android信号到Arduino蓝牙外壳
我当前的代码：（我们只需要发送一个信号时，onRecieve（）被调用）
package com.example.alarmquiz2;
import android.provider.Settings.Secure;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.IOException;
import java.util.UUID;
import android.telephony.TelephonyManager;
import android.bluetooth.BluetoothSocket;
import android.util.Log;
import android.bluetooth.BluetoothClass.Device;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothAdapter;
import android.content.Context;
import android.widget.Toast;
import android.content.Intent;
import android.content.BroadcastReceiver;
public class AlarmReceiver
extends BroadcastReceiver
{
Sound s = new Sound();
private BluetoothAdapter blue;
private Context contexxt;
private Device arduino;
private BluetoothSocket btSocket;
private TelephonyManager tManager;
private UUID uuid;
private OutputStream outStream;
private InputStream inStream;
private static String address = "00:14:03:18:42:19";
public void onReceive(Context context, Intent intent)
{
TelephonyManager tManager =
(TelephonyManager)context
.getSystemService(Context.TELEPHONY_SERVICE);
uuid = UUID.fromString(tmanager.getDeviceID());
contexxt = context;
this.CheckBt();
this.Connect();
this.writeData("meh");
if (!s.isPlaying())
{
s.setSound(context);
s.startSound();
Intent i = new Intent(context, MainActivity.class);
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(i);
}
else if (s.isPlaying())
{
s.stopSound();
Intent i = new Intent(context, SecondscreenActivity.class);
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(i);
}
}
private void CheckBt()
{
blue = BluetoothAdapter.getDefaultAdapter();
if (!blue.isEnabled())
{
Toast
.makeText(contexxt, "Bluetooth Disabled !", Toast.LENGTH_SHORT)
.show();
/*
* It tests if the bluetooth is enabled or not, if not the app will
* show a message.
*/
}
if (blue == null)
{
Toast.makeText(contexxt, "Bluetooth null !", Toast.LENGTH_SHORT)
.show();
}
}
public void Connect()
{
BluetoothDevice device = blue.getRemoteDevice(address);
Log.d("", "Connecting to ... " + device);
blue.cancelDiscovery();
try
{
btSocket = device.createRfcommSocketToServiceRecord(uuid);
/*
* Here is the part the connection is made, by asking the device to create a
* RfcommSocket (Unsecure socket I guess), It map a port for us or something
* like that
*/
btSocket.connect();
Log.d("", "Connection made.");
}
catch (IOException e)
{
try
{
btSocket.close();
}
catch (IOException e2)
{
Log.d("", "Unable to end the connection");
}
Log.d("", "Socket creation failed");
}
/*
* this is a method used to read what the Arduino says for example when
* you write Serial.print("Hello world.") in your Arduino code
*/
}
private void writeData(String data)
{
try
{
outStream = btSocket.getOutputStream();
}
catch (IOException e)
{
Log.d("", "Bug BEFORE Sending stuff", e);
}
String message = data;
/* In my example, I put a button that invoke this method and send a string to it */
byte[] msgBuffer = message.getBytes();
try
{
outStream.write(msgBuffer);
}
catch (IOException e)
{
Log.d("", "Bug while sending stuff", e);
}
}
}
香港专业教育学院也给我自己都在我的清单中所需的权限。我现在正在接触我的朋友电话的问题是，“getDeviceID（）”返回一个14位数字而不是“00000000-0000-0000-0000-000000000000”格式。任何建议，训斥或建议将是最受欢迎的。
“盾”不是“壳” –