package com.car.demo;
import java.io.IOException;
import java.io.OutputStream;
import java.util.UUID;
import android.app.Activity;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothSocket;
import android.graphics.ColorMatrixColorFilter;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.view.Window;
import android.widget.ImageButton;
import android.widget.TextView;
import android.widget.Toast;
/**
*
* @author Penny
* 2017年3月13日 10:46:43
* 蓝牙玩具小车项目；
* Android端 APP
* 主要功能：
* 1 连接小车蓝牙模块，
* 2 并能对小车 进行 前后左右 方向控制。
*/
/**--可发送字段
case 0x31: P1=0xfe;beep=0;break; //接受到1，第一个LED亮
case 0x32: P1=0xfd;beep=0;break; //接受到2，第二个LED亮
case 0x33: P1=0xfb;beep=0;break; //接受到3，第三个LED亮
case 0x34: P1=0xf7;beep=0;break; //接受到4，第四个LED亮
case 0x35: P1=0xef;beep=0;break; //接受到5，第五个LED亮
case 0x36: P1=0xdf;beep=0;break; //接受到6，第六个LED亮
case 0x37: P1=0xbf;beep=0;break; //接受到7，第七个LED亮
case 0x38: P1=0x7f;beep=0;break; //接受到8，第八个LED亮
*/
public class CarControl extends Activity{
private final static String MY_UUID = "00001101-0000-1000-8000-00805F9B34FB"; //SPP服务UUID号
private final static String ADDRESS ="98:D3:35:00:D0:5C"; //蓝牙模块 mac number
BluetoothDevice _device = null; //蓝牙设备
BluetoothSocket _socket = null; //蓝牙通信socket
private BluetoothAdapter _bluetooth = null; //获取本地蓝牙适配器，即蓝牙设备
private OutputStream os=null;
// private final static Handler handler =new Handler();//消息延时处理!!!!此方法存在内存泄漏
// static TimerTask task =null;
TextView msg = null;
/**
* 以上两种方式比较简单，但是需要很多的图片和布局文件，如果项目中的图片按钮比较多，那就很浪费资源。第三种方式使用矩阵颜色滤镜。
颜色过滤矩阵是一个4x5的矩阵，四行分别是红色通道值，绿色通道值，蓝色通道值和alpha通道值。五列分别是对应通道的红色值，绿色值，蓝色值，alpha值和偏移量。
RGB和Alpha的终值计算方法如下：
Red通道终值= a[0] * srcR + a[1] * srcG + a[2] * srcB + a[3] * srcA + a[4]
Green通道终值= a[5] * srcR + a[6] * srcG + a[7] * srcB + a[8] * srcA + a[9]
Blue通道终值= a[10] * srcR + a[11] * srcG + a[12] * srcB + a[13] * srcA + a[14]
Alpha通道终值= a[15] * srcR + a[16] * srcG + a[17] * srcB + a[18] * srcA + a[19]
备注：
srcR为原图Red通道值，srcG为原图Green通道值，srcB为原图Blue通道值，srcA为原图Alpha通道值。
每个通道的源值和终值都在0到255的范围内。即使计算结果大于255或小于0，值都将被限制在0到255的范围内。
*/
/**
* 按钮被按下
*/
private final static float[] BUTTON_PRESSED = new float[] {
2.0f, 0, 0, 0, -50,
0, 2.0f, 0, 0, -50,
0, 0, 2.0f, 0, -50,
0, 0, 0, 0.4f, 0 };
/**
* 按钮恢复原状
*/
private final static float[] BUTTON_RELEASED = new float[] {
1, 0, 0, 0, 0,
0, 1, 0, 0, 0,
0, 0, 1, 0, 0,
0, 0, 0, 1, 0 };
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
/**
* 界面按键获取
*/
setContentView(R.layout.ctl);
ImageButton up = (ImageButton) findViewById(R.id.up);
ImageButton down = (ImageButton) findViewById(R.id.down);
ImageButton left = (ImageButton) findViewById(R.id.left);
ImageButton right = (ImageButton) findViewById(R.id.right);
ImageButton stop = (ImageButton) findViewById(R.id.stop);
ImageButton conn = (ImageButton) findViewById(R.id.conn);
ImageButton close = (ImageButton) findViewById(R.id.close);
ImageButton btnA = (ImageButton) findViewById(R.id.a);
ImageButton btnB = (ImageButton) findViewById(R.id.b);
_bluetooth= BluetoothAdapter.getDefaultAdapter();
if (_bluetooth != null){
// Toast.makeText(this,"已发现:
"+ _bluetooth.getName()+"
"+_bluetooth.getAddress()+"
设备！", Toast.LENGTH_SHORT).show();
delayMsg("已发现:"+ _bluetooth.getName()+","+_bluetooth.getAddress()+"设备！", 3000);//3秒后执行清空信息提示
}else{
if(!_bluetooth.isEnabled())
return;
}
// 设置设备可以被搜索
new Thread(){
public void run(){
if(!_bluetooth.isEnabled()){
_bluetooth.enable();
}
}
}.start();
delayMsg("请点击蓝牙连接按钮！", 3000);//3秒后执行清空信息提示
/**
*连接按键
*/
conn.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
if(event.getAction() == MotionEvent.ACTION_DOWN) {
v.getBackground().setColorFilter(new ColorMatrixColorFilter(BUTTON_PRESSED));
v.setBackgroundDrawable(v.getBackground());
}else if(event.getAction() == MotionEvent.ACTION_UP) {
v.getBackground().setColorFilter(new ColorMatrixColorFilter(BUTTON_RELEASED));
v.setBackgroundDrawable(v.getBackground());
}
//-----------------------准备连接-------------------
if(_bluetooth!=null&&_socket==null){
_device = _bluetooth.getRemoteDevice(ADDRESS); //由Mac 地址获取小车蓝牙设备
try {
_socket = _device.createInsecureRfcommSocketToServiceRecord(UUID.fromString(MY_UUID));
} catch (IOException e) {
// Toast.makeText(CarControl.this, "蓝牙模块获取Socket失败！", Toast.LENGTH_SHORT).show();
// msg.setText("蓝牙模块获取Socket失败！");
delayMsg("蓝牙模块获取Socket失败！", 3000);
}
}
//---------------连接------------------------------
try {
if(_socket!=null&&!_socket.isConnected())
_socket.connect();
if(_socket.isConnected()&&os==null)
os= _socket.getOutputStream();
// Toast.makeText(CarControl.this, "socket成功连接", Toast.LENGTH_SHORT).show();
delayMsg("socket成功连接", 3000);
} catch (IOException e) {
Toast.makeText(CarControl.this, "socket连接失败，程序已退出！", Toast.LENGTH_SHORT).show();
// delayMsg("socket连接失败！程序已退出", 3000);
try {
if(_socket!=null)
_socket.close();
_socket=null;
if(_bluetooth!=null)
_bluetooth.disable();
_bluetooth=null;
finish();
} catch (IOException e1) {
// Toast.makeText(CarControl.this, "socket关闭失败！程序已退出", Toast.LENGTH_SHORT).show();
// delayMsg("socket连接失败！程序已退出", 3000);
}
}
return false;
}
});
/**
* 关闭按键
*/
close.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
if(event.getAction() == MotionEvent.ACTION_DOWN) {
v.getBackground().setColorFilter(new ColorMatrixColorFilter(BUTTON_PRESSED));
v.setBackgroundDrawable(v.getBackground());
}else if(event.getAction() == MotionEvent.ACTION_UP) {
v.getBackground().setColorFilter(new ColorMatrixColorFilter(BUTTON_RELEASED));
v.setBackgroundDrawable(v.getBackground());
}
finish();
if(_bluetooth!=null){
if(_bluetooth.isDiscovering()){
_bluetooth.cancelDiscovery();
}
if(_bluetooth.isEnabled()){
_bluetooth.disable();
_bluetooth=null;
}
}
if(_socket!=null){
try {
_socket.close();
_socket=null;
} catch (IOException e) {
}finally{
if(os!=null){
try {
os.close();
} catch (IOException e) {
}
}
}
}
return false;
}
});
/**
* 上下左右 1234
*/
//向上方向键 id=1
up.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
if(event.getAction() == MotionEvent.ACTION_DOWN) {
v.getBackground().setColorFilter(new ColorMatrixColorFilter(BUTTON_PRESSED));
v.setBackgroundDrawable(v.getBackground());
}else if(event.getAction() == MotionEvent.ACTION_UP) {
v.getBackground().setColorFilter(new ColorMatrixColorFilter(BUTTON_RELEASED));
v.setBackgroundDrawable(v.getBackground());
}
try {
if(_socket!=null&&_socket.isConnected()&&os!=null){
byte[] code1= new byte[]{0x33};
os.write(code1);
// Toast.makeText(CarControl.this, "前进指令（1）！", Toast.LENGTH_SHORT).show();
delayMsg("↑前进↑", 1000);
}else{
// Toast.makeText(CarControl.this, "没有连接上小车蓝牙", Toast.LENGTH_SHORT).show();
// msg.setText("没有连接上小车蓝牙!");
delayMsg("没有连接上小车蓝牙！", 2000);
}
} catch (IOException e) {
// Toast.makeText(CarControl.this, "前进指令（1）发送失败！", Toast.LENGTH_SHORT).show();
delayMsg("前进指令（1）发送失败！", 2000);
}
return false;
}
});
//向下方向键id=3
down.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
if(event.getAction() == MotionEvent.ACTION_DOWN) {
v.getBackground().setColorFilter(new ColorMatrixColorFilter(BUTTON_PRESSED));
v.setBackgroundDrawable(v.getBackground());
}else if(event.getAction() == MotionEvent.ACTION_UP) {
v.getBackground().setColorFilter(new ColorMatrixColorFilter(BUTTON_RELEASED));
v.setBackgroundDrawable(v.getBackground());
}
try {
if(_socket!=null&&_socket.isConnected()&&os!=null){
byte[] code3= new byte[]{0x34};
os.write(code3);
// Toast.makeText(CarControl.this, "后退指令（3）！", Toast.LENGTH_SHORT).show();
delayMsg("↓后退↓", 1000);
}else{
// Toast.makeText(CarControl.this, "没有连接上小车蓝牙", Toast.LENGTH_SHORT).show();
delayMsg("没有连接上小车蓝牙！", 2000);
}
} catch (IOException e) {
// Toast.makeText(CarControl.this, "后退指令（3）发送失败！", Toast.LENGTH_SHORT).show();
delayMsg("后退指令（3）发送失败！", 2000);
}
return false;
}
});
//向左方向键 id=4
left.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
if(event.getAction() == MotionEvent.ACTION_DOWN) {
v.getBackground().setColorFilter(new ColorMatrixColorFilter(BUTTON_PRESSED));
v.setBackgroundDrawable(v.getBackground());
}else if(event.getAction() == MotionEvent.ACTION_UP) {
v.getBackground().setColorFilter(new ColorMatrixColorFilter(BUTTON_RELEASED));
v.setBackgroundDrawable(v.getBackground());
}
try {
if(_socket!=null&&_socket.isConnected()&&os!=null){
byte[] code4= new byte[]{0x31};
os.write(code4);
// Toast.makeText(CarControl.this, "左转指令（4）！", Toast.LENGTH_SHORT).show();
delayMsg("←左转←", 1000);
}else{
// Toast.makeText(CarControl.this, "没有连接上小车蓝牙", Toast.LENGTH_SHORT).show();
delayMsg("没有连接上小车蓝牙！", 2000);
}
} catch (IOException e) {
// Toast.makeText(CarControl.this, "左转指令（4）发送失败！", Toast.LENGTH_SHORT).show();
delayMsg("左转指令（4）发送失败！", 2000);
}
return false;
}
});
//向右方向键 id=2
right.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
if(event.getAction() == MotionEvent.ACTION_DOWN) {
v.getBackground().setColorFilter(new ColorMatrixColorFilter(BUTTON_PRESSED));
v.setBackgroundDrawable(v.getBackground());
}else if(event.getAction() == MotionEvent.ACTION_UP) {
v.getBackground().setColorFilter(new ColorMatrixColorFilter(BUTTON_RELEASED));
v.setBackgroundDrawable(v.getBackground());
}
try {
if(_socket!=null&&_socket.isConnected()&&os!=null){
byte[] code2= new byte[]{0x32};
os.write(code2);
// Toast.makeText(CarControl.this, "右转指令（2）！", Toast.LENGTH_SHORT).show();
delayMsg("→右转→", 1000);
}else{
// Toast.makeText(CarControl.this, "没有连接上小车蓝牙!", Toast.LENGTH_SHORT).show();
delayMsg("没有连接上小车蓝牙！", 2000);
}
} catch (IOException e) {
// Toast.makeText(CarControl.this, "右转指令（2）发送失败！", Toast.LENGTH_SHORT).show();
delayMsg("右转指令（2）发送失败！", 2000);
}
return false;
}
});
//stop
stop.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
if(event.getAction() == MotionEvent.ACTION_DOWN) {
v.getBackground().setColorFilter(new ColorMatrixColorFilter(BUTTON_PRESSED));
v.setBackgroundDrawable(v.getBackground());
}else if(event.getAction() == MotionEvent.ACTION_UP) {
v.getBackground().setColorFilter(new ColorMatrixColorFilter(BUTTON_RELEASED));
v.setBackgroundDrawable(v.getBackground());
}
try {
if(_socket!=null&&_socket.isConnected()&&os!=null){
byte[] code2= new byte[]{0x35};
os.write(code2);
// Toast.makeText(CarControl.this, "右转指令（2）！", Toast.LENGTH_SHORT).show();
delayMsg("A", 1000);
}else{
// Toast.makeText(CarControl.this, "没有连接上小车蓝牙!", Toast.LENGTH_SHORT).show();
delayMsg("没有连接上小车蓝牙！", 2000);
}
} catch (IOException e) {
// Toast.makeText(CarControl.this, "右转指令（2）发送失败！", Toast.LENGTH_SHORT).show();
delayMsg("A发送失败！", 2000);
}
return false;
}
});
/***
* A-B 功能键
*/
//A
btnA.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
if(event.getAction() == MotionEvent.ACTION_DOWN) {
v.getBackground().setColorFilter(new ColorMatrixColorFilter(BUTTON_PRESSED));
v.setBackgroundDrawable(v.getBackground());
}else if(event.getAction() == MotionEvent.ACTION_UP) {
v.getBackground().setColorFilter(new ColorMatrixColorFilter(BUTTON_RELEASED));
v.setBackgroundDrawable(v.getBackground());
}
try {
if(_socket!=null&&_socket.isConnected()&&os!=null){
byte[] code2= new byte[]{0x36};
os.write(code2);
// Toast.makeText(CarControl.this, "右转指令（2）！", Toast.LENGTH_SHORT).show();
delayMsg("A", 1000);
}else{
// Toast.makeText(CarControl.this, "没有连接上小车蓝牙!", Toast.LENGTH_SHORT).show();
delayMsg("没有连接上小车蓝牙！", 2000);
}
} catch (IOException e) {
// Toast.makeText(CarControl.this, "右转指令（2）发送失败！", Toast.LENGTH_SHORT).show();
delayMsg("A发送失败！", 2000);
}
return false;
}
});
//B
btnB.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
if(event.getAction() == MotionEvent.ACTION_DOWN) {
v.getBackground().setColorFilter(new ColorMatrixColorFilter(BUTTON_PRESSED));
v.setBackgroundDrawable(v.getBackground());
}else if(event.getAction() == MotionEvent.ACTION_UP) {
v.getBackground().setColorFilter(new ColorMatrixColorFilter(BUTTON_RELEASED));
v.setBackgroundDrawable(v.getBackground());
}
try {
if(_socket!=null&&_socket.isConnected()&&os!=null){
byte[] code2= new byte[]{0x37};
os.write(code2);
// Toast.makeText(CarControl.this, "右转指令（2）！", Toast.LENGTH_SHORT).show();
delayMsg("B", 1000);
}else{
// Toast.makeText(CarControl.this, "没有连接上小车蓝牙!", Toast.LENGTH_SHORT).show();
delayMsg("没有连接上小车蓝牙！", 2000);
}
} catch (IOException e) {
// Toast.makeText(CarControl.this, "右转指令（2）发送失败！", Toast.LENGTH_SHORT).show();
delayMsg("B发送失败！", 2000);
}
return false;
}
});
}
private void delayMsg(final String msgtext,int times){
msg=(TextView) findViewById(R.id.ctlmsg);
msg.setText(msgtext);
}
}
开源地址[https://github.com/Himi7362/bluecar]