Android蓝牙连接FT232单片机

刚上班，因为工作需要实现蓝牙连接单片机，一直没接触过蓝牙并且还是个初学者。在网上各种找,也终于实现了连接发送的功能。

代码写的太乱，什么也没考虑，好多都是其他网上的前辈的代码，有些还不明白。主要是想，哪位看见了指导一下。谢谢各位

protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        requestWindowFeature(Window.FEATURE_NO_TITLE);        setContentView(R.layout.activity_search);        //注册连接的广播        registerReceiver(mGattUpdateReceiver, makeGattUpdateIntentFilter());        IntentFilter filter = new IntentFilter(BluetoothAdapter.ACTION_STATE_CHANGED);        registerReceiver(receiver, filter);        startService(new Intent(this, BluetoothLeService.class));        initView();    }    @Override    protected void onStart() {        super.onStart();        bindService(new Intent(this, BluetoothLeService.class), mServiceConnection, Context.BIND_AUTO_CREATE);    }    /**     * 初始化布局     */    public void initView() {        rippleBackground=(RippleBackground)findViewById(R.id.content);        list = new ArrayList<>();        mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();        tvSwitch = (TextView) findViewById(R.id.searchs_btn_title_switch);        imgSearch = (ImageView) findViewById(R.id.searchs_img_search_png);        tvSearch = (TextView) findViewById(R.id.searchs_tv_search_text);        listView = (ListView) findViewById(R.id.searchs_lv);        listView.setVerticalScrollBarEnabled(false);        imgBack=(ImageView) findViewById(R.id.searchs_img_title_back);        relativeLayout = (RelativeLayout) findViewById(R.id.searchs_rl_search_son);        relativeLayout.setOnClickListener(this);        imgBack.setOnClickListener(this);        tvSwitch.setOnClickListener(this);        devicesListAdapter = new DevicesListAdapter<>(this, list);        listView.setAdapter(devicesListAdapter);        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {            @Override            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {                //点击条目进行连接                mBluetoothLeService.connect(list.get(position).getBluetoothAddress());            }        });    }    private IntentFilter makeGattUpdateIntentFilter() {                        //注册接收的事件        final IntentFilter intentFilter = new IntentFilter();        intentFilter.addAction(BluetoothLeService.ACTION_GATT_CONNECTED);        intentFilter.addAction(BluetoothLeService.ACTION_GATT_DISCONNECTED);        intentFilter.addAction(BluetoothLeService.ACTION_GATT_SERVICES_DISCOVERED);        intentFilter.addAction(BluetoothLeService.ACTION_DATA_AVAILABLE);        intentFilter.addAction(BluetoothDevice.ACTION_UUID);        return intentFilter;    }    @Override    public void onClick(View v) {        switch (v.getId()) {            case R.id.searchs_btn_title_switch://开关蓝牙按钮                switchBluetooth();                break;            case R.id.searchs_rl_search_son://搜索按钮                searchOnClick();                break;            case R.id.searchs_img_title_back:                finish();                break;        }    }    /**     * 开关蓝牙的方法     */    public void switchBluetooth() {        if (mController.getBluetoothStatus()) {            if (mBluetoothAdapter != null && mBluetoothAdapter.isEnabled()) {                mBluetoothAdapter.disable();                isSearch = false;                mBluetoothAdapter.cancelDiscovery();//关闭搜索                imgSearch.setImageResource(R.mipmap.sousuo);                tvSearch.setText("搜索");                rippleBackground.stopRippleAnimation();            }        } else {            startActivityForResult(new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE), 1);        }    }    /**     * 点击搜索的方法     */    public void searchOnClick() {        if (!mBluetoothAdapter.isEnabled()) {            Toast.makeText(getApplicationContext(), "请先开启蓝牙", Toast.LENGTH_SHORT).show();        } else {            if (isSearch) {                rippleBackground.stopRippleAnimation();                isSearch = false;                mBluetoothAdapter.cancelDiscovery();//关闭搜索                imgSearch.setImageResource(R.mipmap.sousuo);                tvSearch.setText("搜索");            } else {                rippleBackground.startRippleAnimation();                isSearch = true;                imgSearch.setImageResource(R.mipmap.stop);                tvSearch.setText("停止");                listView.setVisibility(View.VISIBLE);                if (list != null) {                    list.clear();                    if (devicesListAdapter != null) {                        devicesListAdapter.notifyDataSetChanged();//刷新                    }                }                //开始搜索                mBluetoothAdapter.startDiscovery();                //注册搜索广播进行监听                IntentFilter filters = new IntentFilter(BluetoothDevice.ACTION_FOUND);                registerReceiver(receiverss, filters);            }        }    }    /**     * 搜索的广播监听     */    private BroadcastReceiver receiverss = new BroadcastReceiver() {        public void onReceive(Context context, Intent intent) {            String action = intent.getAction();            //搜索设备时，取得设备的MAC地址            if (BluetoothDevice.ACTION_FOUND.equals(action)) {                BluetoothDevice device = intent                        .getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);                //把蓝牙信息存到实体类中                blueToothBean = new BlueToothBean(device.getBluetoothClass().getDeviceClass(), device.getName(), false, device.getAddress());                boolean zai=false;                if(list.size()>0) {                    for (int i = 0; i < list.size(); i++) {                        if (list.get(i).getBluetoothAddress().indexOf(blueToothBean.getBluetoothAddress())!=-1) {                            zai=true;                        }                    }                    if(!zai){                        list.add(blueToothBean);                    }                }else{                    list.add(blueToothBean);                }                if (devicesListAdapter != null) {                    devicesListAdapter.notifyDataSetChanged();                }            }        }    };    /**     * 监听蓝牙的状态     */    private BroadcastReceiver receiver = new BroadcastReceiver() {        @Override        public void onReceive(Context context, Intent intent) {            int state = intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, 1);            switch (state) {                case BluetoothAdapter.STATE_OFF:                    tvSwitch.setText("开启");                    isSearch = false;                    mBluetoothAdapter.cancelDiscovery();//关闭搜索                    imgSearch.setImageResource(R.mipmap.sousuo);                    tvSearch.setText("搜索");                    break;                case BluetoothAdapter.STATE_ON:                    tvSwitch.setText("关闭");                    break;                case BluetoothAdapter.STATE_TURNING_ON://                    Toast.makeText(SearchActivity.this, "正在打开蓝牙", Toast.LENGTH_SHORT).show();                    break;                case BluetoothAdapter.STATE_TURNING_OFF://                    Toast.makeText(SearchActivity.this, "正在关闭蓝牙", Toast.LENGTH_SHORT).show();                    break;                default://                    Toast.makeText(SearchActivity.this, "未知状态", Toast.LENGTH_SHORT).show();            }        }    };    private void ShowDialog() {        Toast.makeText(this, "连接成功", Toast.LENGTH_SHORT).show();    }    private final ServiceConnection mServiceConnection = new ServiceConnection() {        @Override        public void onServiceConnected(ComponentName componentName, IBinder service) {            mBluetoothLeService = ((BluetoothLeService.LocalBinder) service).getService();            if (!mBluetoothLeService.initialize()) {                finish();            }        }        @Override        public void onServiceDisconnected(ComponentName componentName) {            mBluetoothLeService = null;        }    };    /**     * 连接设备的广播监听     */    private final  BroadcastReceiver mGattUpdateReceiver = new BroadcastReceiver() {        @Override        public void onReceive(Context context, Intent intent) {            final String action = intent.getAction();            if (BluetoothLeService.ACTION_GATT_CONNECTED.equals(action)) {                Log.e(TAG, "Only gatt, just wait");            } else if (BluetoothLeService.ACTION_GATT_DISCONNECTED.equals(action)) { //断开连接                mConnected = false;                invalidateOptionsMenu();            } else if (BluetoothLeService.ACTION_GATT_SERVICES_DISCOVERED.equals(action)) {//发送数据                mConnected = true;                ShowDialog();                //发送信息                mBluetoothLeService.WriteValue("7E 7E 3D 3D");                invalidateOptionsMenu();            } else if (BluetoothLeService.ACTION_DATA_AVAILABLE.equals(action)) { //接收数据                //接收到byte数组类型的信息                byte[] bytes = intent.getByteArrayExtra(BluetoothLeService.EXTRA_DATA);                //把信息转换成String类型                String sss = bytes2hex02(bytes);            }        }    };    /**     * byte[]转换成String方法     *     * @param bytes     * @return     */    public String bytes2hex02(byte[] bytes) {        StringBuilder sb = new StringBuilder();        String tmp = null;        for (byte b : bytes) {            // 将每个字节与0xFF进行与运算，然后转化为10进制，然后借助于Integer再转化为16进制            tmp = Integer.toHexString(0xFF & b);            if (tmp.length() == 1)// 每个字节8为，转为16进制标志，2个16进制位            {                tmp = "0" + tmp;            }            sb.append(tmp);        }        return sb.toString();    }    @Override    protected void onResume() {        super.onResume();        //判断蓝牙是否开启        if (mController.getBluetoothStatus()) {            tvSwitch.setText("关闭");        } else {            tvSwitch.setText("开启");        }    }    @Override    protected void onPause() {        super.onPause();    }    @Override    protected void onStop() {        super.onStop();    }    @Override    protected void onDestroy() {        super.onDestroy();        unregisterReceiver(mGattUpdateReceiver);        unbindService(mServiceConnection);        mBluetoothAdapter.cancelDiscovery();    }

服务是主要代码 都是扒过来的，做了一丁点改动。

package com.example.hello.bluetoothdemo;import android.app.Service;import android.bluetooth.BluetoothAdapter;import android.bluetooth.BluetoothDevice;import android.bluetooth.BluetoothGatt;import android.bluetooth.BluetoothGattCallback;import android.bluetooth.BluetoothGattCharacteristic;import android.bluetooth.BluetoothGattDescriptor;import android.bluetooth.BluetoothGattService;import android.bluetooth.BluetoothManager;import android.bluetooth.BluetoothProfile;import android.content.Context;import android.content.Intent;import android.os.Binder;import android.os.IBinder;import android.util.Log;import java.util.List;import java.util.UUID;/** * */public class BluetoothLeService extends Service {    private final static String TAG = BluetoothLeService.class.getSimpleName();    private BluetoothManager mBluetoothManager;    private BluetoothAdapter mBluetoothAdapter;    private BluetoothGatt mBluetoothGatt;    public final static String ACTION_GATT_CONNECTED =            "com.example.bluetooth.le.ACTION_GATT_CONNECTED";    public final static String ACTION_GATT_DISCONNECTED =            "com.example.bluetooth.le.ACTION_GATT_DISCONNECTED";    public final static String ACTION_GATT_SERVICES_DISCOVERED =            "com.example.bluetooth.le.ACTION_GATT_SERVICES_DISCOVERED";    public final static String ACTION_DATA_AVAILABLE =            "com.example.bluetooth.le.ACTION_DATA_AVAILABLE";    public final static String EXTRA_DATA =            "com.example.bluetooth.le.EXTRA_DATA";    public final static UUID UUID_NOTIFY =            UUID.fromString("0000ffe1-0000-1000-8000-00805f9b34fb");    public final static UUID UUID_SERVICE =        UUID.fromString("0000ffe0-0000-1000-8000-00805f9b34fb");        public BluetoothGattCharacteristic mNotifyCharacteristic;    /**     * 向单片机中发送信息  十六进制     * @param strValue     */    public void WriteValue(String strValue)    {    mNotifyCharacteristic.setValue(toByteArray(strValue));    mBluetoothGatt.writeCharacteristic(mNotifyCharacteristic);    }    /**     * 转换     * @param arg     * @return     */    public static byte[] toByteArray(String arg) {        if (arg != null) {/* 1.先去除String中的' '，然后将String转换为char数组 */            char[] NewArray = new char[1000];            char[] array = arg.toCharArray();            int length = 0;            for (int i = 0; i < array.length; i++) {                if (array[i] != ' ') {                    NewArray[length] = array[i];                    length++;                }            }/* 将char数组中的值转成一个实际的十进制数组 */            int EvenLength = (length % 2 == 0) ? length : length + 1;            if (EvenLength != 0) {                int[] data = new int[EvenLength];                data[EvenLength - 1] = 0;                for (int i = 0; i < length; i++) {                    if (NewArray[i] >= '0' && NewArray[i] <= '9') {                        data[i] = NewArray[i] - '0';                    } else if (NewArray[i] >= 'a' && NewArray[i] <= 'f') {                        data[i] = NewArray[i] - 'a' + 10;                    } else if (NewArray[i] >= 'A' && NewArray[i] <= 'F') {                        data[i] = NewArray[i] - 'A' + 10;                    }                }/* 将 每个char的值每两个组成一个16进制数据 */                byte[] byteArray = new byte[EvenLength / 2];                for (int i = 0; i < EvenLength / 2; i++) {                    byteArray[i] = (byte) (data[i * 2] * 16 + data[i * 2 + 1]);                }                return byteArray;            }        }        return new byte[] {};    }    public void findService(List<BluetoothGattService> gattServices)    {    Log.i(TAG, "Count is:" + gattServices.size());    for (BluetoothGattService gattService : gattServices)    {    Log.i(TAG, gattService.getUuid().toString());Log.i(TAG, UUID_SERVICE.toString());    if(gattService.getUuid().toString().equalsIgnoreCase(UUID_SERVICE.toString()))    {    List<BluetoothGattCharacteristic> gattCharacteristics =                    gattService.getCharacteristics();    Log.i(TAG, "Count is:" + gattCharacteristics.size());    for (BluetoothGattCharacteristic gattCharacteristic :                    gattCharacteristics)     {    if(gattCharacteristic.getUuid().toString().equalsIgnoreCase(UUID_NOTIFY.toString()))    {    Log.i(TAG, gattCharacteristic.getUuid().toString());    Log.i(TAG, UUID_NOTIFY.toString());    mNotifyCharacteristic = gattCharacteristic;    setCharacteristicNotification(gattCharacteristic, true);    broadcastUpdate(ACTION_GATT_SERVICES_DISCOVERED);    return;    }    }    }    }    }    private final BluetoothGattCallback mGattCallback = new BluetoothGattCallback() {        @Override        public void onConnectionStateChange(BluetoothGatt gatt, int status, int newState) {            String intentAction;            Log.i(TAG, "oldStatus=" + status + " NewStates=" + newState);            if(status == BluetoothGatt.GATT_SUCCESS)            {                       if (newState == BluetoothProfile.STATE_CONNECTED) {                intentAction = ACTION_GATT_CONNECTED;                                broadcastUpdate(intentAction);                Log.i(TAG, "Connected to GATT server.");                // Attempts to discover services after successful connection.                Log.i(TAG, "Attempting to start service discovery:" +                mBluetoothGatt.discoverServices());            } else if (newState == BluetoothProfile.STATE_DISCONNECTED) {                intentAction = ACTION_GATT_DISCONNECTED;                mBluetoothGatt.close();                mBluetoothGatt = null;                Log.i(TAG, "Disconnected from GATT server.");                broadcastUpdate(intentAction);            }        }        }        @Override        public void onServicesDiscovered(BluetoothGatt gatt, int status) {            if (status == BluetoothGatt.GATT_SUCCESS) {            Log.w(TAG, "onServicesDiscovered received: " + status);            findService(gatt.getServices());            } else {            if(mBluetoothGatt.getDevice().getUuids() == null)                Log.w(TAG, "onServicesDiscovered received: " + status);            }        }        @Override        public void onCharacteristicRead(BluetoothGatt gatt,                                         BluetoothGattCharacteristic characteristic,                                         int status) {            if (status == BluetoothGatt.GATT_SUCCESS) {                broadcastUpdate(ACTION_DATA_AVAILABLE, characteristic);            }        }        @Override        public void onCharacteristicChanged(BluetoothGatt gatt,                                            BluetoothGattCharacteristic characteristic) {            broadcastUpdate(ACTION_DATA_AVAILABLE, characteristic);            Log.e(TAG, "OnCharacteristicWrite");        }                @Override        public void onCharacteristicWrite(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic,                                          int status)        {        Log.e(TAG, "OnCharacteristicWrite");        }                @Override        public void onDescriptorRead(BluetoothGatt gatt,                                         BluetoothGattDescriptor bd,                                         int status) {        Log.e(TAG, "onDescriptorRead");        }                @Override        public void onDescriptorWrite(BluetoothGatt gatt,         BluetoothGattDescriptor bd,                                         int status) {        Log.e(TAG, "onDescriptorWrite");        }                @Override        public void onReadRemoteRssi(BluetoothGatt gatt, int a, int b)        {        Log.e(TAG, "onReadRemoteRssi");        }                @Override        public void onReliableWriteCompleted(BluetoothGatt gatt, int a)        {        Log.e(TAG, "onReliableWriteCompleted");        }            };    private void broadcastUpdate(final String action) {        final Intent intent = new Intent(action);        sendBroadcast(intent);    }    private void broadcastUpdate(final String action,                                 final BluetoothGattCharacteristic characteristic) {        final Intent intent = new Intent(action);        final byte[] data = characteristic.getValue();        if (data != null && data.length > 0) {            intent.putExtra(EXTRA_DATA, data);        }        sendBroadcast(intent);    }    public class LocalBinder extends Binder {        public BluetoothLeService getService() {            return BluetoothLeService.this;        }    }    @Override    public IBinder onBind(Intent intent) {        return mBinder;    }    @Override    public boolean onUnbind(Intent intent) {        close();        return super.onUnbind(intent);    }    private final IBinder mBinder = new LocalBinder();    public boolean initialize() {        if (mBluetoothManager == null) {            mBluetoothManager = (BluetoothManager) getSystemService(Context.BLUETOOTH_SERVICE);            if (mBluetoothManager == null) {                Log.e(TAG, "Unable to initialize BluetoothManager.");                return false;            }        }        mBluetoothAdapter = mBluetoothManager.getAdapter();        if (mBluetoothAdapter == null) {            Log.e(TAG, "Unable to obtain a BluetoothAdapter.");            return false;        }        return true;    }    public boolean connect(final String address) {        if (mBluetoothAdapter == null || address == null) {            Log.w(TAG, "BluetoothAdapter not initialized or unspecified address.");            return false;        }        BluetoothDevice device = mBluetoothAdapter.getRemoteDevice(address);        if (device == null) {            Log.w(TAG, "Device not found.  Unable to connect.");            return false;        }        if(mBluetoothGatt != null)        {        mBluetoothGatt.close();            mBluetoothGatt = null;        }        mBluetoothGatt = device.connectGatt(this, false, mGattCallback);        Log.d(TAG, "Trying to create a new connection.");        return true;    }    public void disconnect() {        if (mBluetoothAdapter == null || mBluetoothGatt == null) {            Log.w(TAG, "BluetoothAdapter not initialized");            return;        }        mBluetoothGatt.disconnect();    }    public void close() {        if (mBluetoothGatt == null) {            return;        }        mBluetoothGatt.close();        mBluetoothGatt = null;    }    public void readCharacteristic(BluetoothGattCharacteristic characteristic) {        if (mBluetoothAdapter == null || mBluetoothGatt == null) {            Log.w(TAG, "BluetoothAdapter not initialized");            return;        }        mBluetoothGatt.readCharacteristic(characteristic);    }    public void setCharacteristicNotification(BluetoothGattCharacteristic characteristic,                                              boolean enabled) {        if (mBluetoothAdapter == null || mBluetoothGatt == null) {            Log.w(TAG, "BluetoothAdapter not initialized");            return;        }        mBluetoothGatt.setCharacteristicNotification(characteristic, enabled);    }    public List<BluetoothGattService> getSupportedGattServices() {        if (mBluetoothGatt == null) return null;        return mBluetoothGatt.getServices();    }}

public class BluetoothController {    private BluetoothAdapter mAdapter;    public BluetoothController(){        mAdapter = BluetoothAdapter.getDefaultAdapter();    }    /**     * 判断当前设备是否支持蓝牙     * @return     */    public boolean isSupportBluetooth(){        if(mAdapter!=null){            return true;        }        return false;    }    /**     * 获取蓝牙的状态     * @return     */    public boolean getBluetoothStatus(){        if(mAdapter!=null){            return mAdapter.isEnabled();        }        return false;    }    /**     * 打开蓝牙     * @param activity     * @param requestCode     */    public void turnOnBluetooth(Activity activity, int requestCode){        if(mAdapter!=null&&!mAdapter.isEnabled()) {            Intent intent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);            activity.startActivityForResult(intent, requestCode);        }    }    /**     * 关闭蓝牙     */    public void turnOffBluetooth(){        if(mAdapter!=null&&mAdapter.isEnabled()) {            mAdapter.disable();        }    }}

大神们  我需要你们的批斗，我欠缺经验，请多指导。