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Android+Arduino+藍芽程式   Arduino code #include #include //引用二個函式庫SoftwareSerial及Wire//http://blog.cavedu.com/programming-language/appinventor/appinventorandarduinowithbluetooth2/SoftwareSerial I2CBT(10,11);//定義PIN10及PIN11分別為RX及TX腳位 byte cmmd[20];int insize, a; void setup(){ Serial.begin(9600); //Arduino起始鮑率：9600 I2CBT.begin(9600); //藍牙鮑率：57600(注意！鮑率每個藍牙晶片不一定相同，請務必確認 pinMode(9, OUTPUT); //請注意您使用的Arduino 該腳位是否支援 PWM (會有~符號），否則會看不到效果 digitalWrite(9,HIGH); //點亮LED} void loop() { byte cmmd[20]; int insize; while(1) { if ((insize=(I2CBT.available()))>0) { //讀取藍牙訊息 Serial.print(“input size = “); Serial.println(insize); for (int i=0; i { Serial.print(cmmd[i]=char(I2CBT.read())); Serial.print(” “); }//此段請參考上一篇解釋 } switch (cmmd[0]) { //讀取第一個字 case 97: //97為”a”的ASCII CODE digitalWrite(13,HIGH); //點亮LED digitalWrite(9,HIGH); //點亮LED break; case 98://98為”b”的ASCII CODE Serial.println(“Get b”); digitalWrite(13,LOW); //熄滅LED digitalWrite(9,LOW); //熄滅LED break; } //Switch } //while}   Android code-setting xml package=”com.example.bluetooth9_3_01″ android:versionCode=”1″ android:versionName=”1.0″ > android:minSdkVersion=”8″ android:targetSdkVersion=”18″ /> android:allowBackup=”true” android:icon=”@drawable/ic_launcher” android:label=”@string/app_name” android:theme=”@style/AppTheme” > android:name=”com.example.bluetooth9_3_01.Bluetooth9_3_01″ android:label=”@string/app_name” >   Android code-layout01 xml xmlns:tools=”http://schemas.android.com/tools” android:layout_width=”match_parent” android:layout_height=”match_parent” android:paddingBottom=”@dimen/activity_vertical_margin” android:paddingLeft=”@dimen/activity_horizontal_margin” android:paddingRight=”@dimen/activity_horizontal_margin” android:paddingTop=”@dimen/activity_vertical_margin” tools:context=”.Bluetooth9_3_01″ > android:id=”@+id/button2″ android:layout_width=”wrap_content” android:layout_height=”wrap_content” android:layout_alignBaseline=”@+id/textView1″ android:layout_marginTop=”28dp” android:text=”結束” /> android:id=”@+id/textView1″ android:layout_width=”wrap_content” android:layout_height=”wrap_content” android:layout_alignParentRight=”true” android:layout_alignParentTop=”true” android:layout_marginRight=”84dp” android:layout_marginTop=”42dp” android:text=”TextView” /> android:id=”@+id/bluetooth_list” android:layout_width=”match_parent” android:layout_height=”wrap_content” android:layout_below=”@+id/button2″ > android:id=”@+id/editText1″ android:layout_width=”wrap_content” android:layout_height=”wrap_content” android:layout_alignParentTop=”true” android:layout_alignRight=”@+id/bluetooth_list” android:ems=”10″ android:inputType=”numberDecimal” > android:id=”@+id/button1″ android:layout_width=”wrap_content” android:layout_height=”wrap_content” android:layout_below=”@+id/editText1″ android:layout_toRightOf=”@+id/button2″ android:text=”Button” />   Android code-layout02 xml android:layout_width=”match_parent” android:layout_height=”match_parent” android:orientation=”vertical” > android:id=”@+id/Bluetooth_Name” android:layout_width=”wrap_content” android:layout_height=”wrap_content” android:text=”Name” android:textColor=”#ff0000″ android:textSize=”4mm” /> android:id=”@+id/Bluetooth_Address” android:layout_width=”wrap_content” android:layout_height=”wrap_content” android:text=”Address” android:textColor=”#00ff00″ android:textSize=”4mm” />   Android code package com.example.bluetooth9_3_01; import java.io.BufferedInputStream;import java.io.BufferedOutputStream;import java.io.IOException;import java.math.BigInteger;import java.util.ArrayList;import java.util.HashMap;import java.util.Set;import java.util.UUID;import android.os.Bundle;import android.app.Activity;import android.bluetooth.BluetoothAdapter;import android.bluetooth.BluetoothDevice;import android.bluetooth.BluetoothSocket;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.content.IntentFilter;import android.view.View;import android.view.View.OnClickListener;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.Button;import android.widget.ListView;import android.widget.SimpleAdapter;import android.widget.TextView;import android.widget.Toast; public class Bluetooth9_3_01 extends Activity implements OnItemClickListener{ private BluetoothAdapter bluetoothAdapter; private int ENABLE_BULETOOTH=2; private ArrayList> arrayList; private SimpleAdapter adapter; private ListView listmenu; private BlueToothReceiver receiver; private BufferedOutputStream out; private BufferedInputStream in; private BluetoothSocket socket; private final UUID MY_UUID=UUID.fromString (“00001101-0000-1000-8000-00805F9B34FB”); private Button end; private Button send; private TextView tv1; private byte[] array_51={‘b’,’a’}; private boolean m_blnchange=false; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.bluetooth9_3_01); findId(); bluetoothAdapter=BluetoothAdapter.getDefaultAdapter(); if(bluetoothAdapter==null){ Toast.makeText(this, “不支援Bluetooth”, Toast.LENGTH_LONG).show(); finish(); }else if(!bluetoothAdapter.isEnabled()){ Intent intent=new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE); startActivityForResult(intent, ENABLE_BULETOOTH); } arrayList=new ArrayList>(); if(bluetoothAdapter.isDiscovering()) bluetoothAdapter.cancelDiscovery(); bluetoothAdapter.startDiscovery(); findBluetooth() ; listmenu.setOnItemClickListener( this); send.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { try { if(!m_blnchange) { out.write(array_51[0]); } else { out.write(array_51[1]); } out.flush(); m_blnchange=!m_blnchange; } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } }); end.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { try { out.close(); in.close(); socket.close(); finish(); } catch (IOException e) { e.printStackTrace(); android.os.Process.killProcess(android.os.Process.myPid()); } } }); } private void findBluetooth() { receiver=new BlueToothReceiver(); IntentFilter filter=new IntentFilter(); filter.addAction(BluetoothDevice.ACTION_BOND_STATE_CHANGED); filter.addAction(BluetoothDevice.ACTION_FOUND); registerReceiver(receiver, filter); adapter=new SimpleAdapter(this, arrayList, R.layout.bluetoothitem, new String[]{“arrayName”,”arrayAddress”}, new int[]{R.id.Bluetooth_Name, R.id.Bluetooth_Address}); listmenu.setAdapter(adapter); } public class BlueToothReceiver extends BroadcastReceiver{ @Override public void onReceive(Context context, Intent intent) { String action=intent.getAction(); if(BluetoothDevice.ACTION_FOUND.equals(action)){ BluetoothDevice device=intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); HashMap map=new HashMap(); map.put(“arrayName”, device.getName()); map.put(“arrayAddress”, device.getAddress()); arrayList.add(map); }else if(BluetoothDevice.ACTION_BOND_STATE_CHANGED.equals(action)){ BluetoothDevice device1=intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); switch(device1.getBondState()){ case BluetoothDevice.BOND_BONDING: tv1.setText(“配對中”); break; case BluetoothDevice.BOND_BONDED: tv1.setText(“配對完成”); break; case BluetoothDevice.BOND_NONE: tv1.setText(“配對取消”); break; default: break; } } } } public void onItemClick(AdapterView> arg0, View arg1, int arg2, long arg3){ bluetoothAdapter.cancelDiscovery(); Set device1=bluetoothAdapter.getBondedDevices(); BluetoothDevice device =bluetoothAdapter.getRemoteDevice (arrayList.get(arg2).get(“arrayAddress”)); try{ socket=device.createRfcommSocketToServiceRecord(MY_UUID); socket.connect(); out=new BufferedOutputStream(socket.getOutputStream()); in=new BufferedInputStream(socket.getInputStream()); tv1.setText(“連線成功”); }catch(IOException e){ } } private void findId() { tv1=(TextView)findViewById(R.id.textView1); end=(Button)findViewById(R.id.button2); send=(Button)findViewById(R.id.button1); listmenu=(ListView) findViewById(R.id.bluetooth_list); } @Override protected void onDestroy() { super.onDestroy(); if(receiver!=null) unregisterReceiver(receiver); Toast.makeText(this, “結束”, 2000).show(); } }