本文实例为大家分享了android实现蓝牙app的具体代码，供大家参考，具体内容如下
代码语言：javascript复制private BluetoothGatt bluetoothGatt;
private BluetoothGattService gattService;
private BluetoothGattCharacteristic gattCharacteristic;
private BluetoothManager bluetoothManager;
private BluetoothAdapter bluetoothAdapter;
private List<BluetoothDevice devices = new ArrayList< ();
private UUID serviceUUID; //不同设备 不同uuid
private UUID characteristicUUID; //不同设备 不同uuid
private final UUID service4UUID= UUID.fromString("0000fff0-0000-1000-8000-00805f9b34fb");
private final UUID charAUUID = UUID.fromString("0000fffa-0000-1000-8000-00805f9b34fb");
private LightReceiver lightReceiver;
private ScanReceiver scanReceiver;
private ListView listView;
private TextView tvrefresh;
private String lightAction;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Log.i("tag", "MainActivity onCreate()");
//
listView = (ListView) findViewById(R.id.lv_bluetooth);
tvrefresh = (TextView) findViewById(R.id.tv_refresh_bluetooth);
tvrefresh.setOnClickListener(this);
openBluetooth();
registeLigthReceiver();
registeScanReceiver();
}
@Override
protected void onStart() {
super.onStart();
Log.i("tag", "MainActivity onStart()");
bluetoothScan();
}
//返回
@Override
public boolean onKeyUp(int keyCode, KeyEvent event) {
Log.i("tag", "MainActivity onKeyUp()");
this.finish();
return super.onKeyUp(keyCode, event);
}
//重新扫描蓝牙
@Override
public void onClick(View view) {
switch (view.getId()) {
case R.id.tv_refresh_bluetooth:
//蓝牙扫描
bluetoothScan();
break;
default:
break;
}
}
//打开本地蓝牙
private void openBluetooth() {
Log.i("tag", "openLocalBluetooth()");
//检查手机是否支持蓝牙4.0
if (!getPackageManager().hasSystemFeature(PackageManager.FEATURE_BLUETOOTH_LE)) {
Toast.makeText(this, "手机不支持蓝牙4.0", Toast.LENGTH_SHORT).show();
finish();
}
//调用系统服务的方式，请求开启蓝牙
bluetoothManager = (BluetoothManager) getSystemService(Context.BLUETOOTH_SERVICE);
bluetoothAdapter = bluetoothManager.getAdapter();
//开启蓝牙
if (!bluetoothAdapter.isEnabled()) {
bluetoothAdapter.enable();
}
}
//开始蓝牙扫描 扫描到一个添加一个
private void bluetoothScan() {
Log.i("tag", "bluetoothScan()");
if (bluetoothAdapter == null) {
openBluetooth();
}
if (!bluetoothAdapter.isDiscovering()) {
bluetoothAdapter.startDiscovery(); //回调
} else {
Toast.makeText(this, "扫描中..", Toast.LENGTH_SHORT).show();
}
}
//更新蓝牙列表中的数据
private void updateUi() {
Log.i("tag", "updateUi()");
if (devices != null && devices.size() 0) {
BlueAdapter adapter = new BlueAdapter(this, devices);
listView.setAdapter(adapter);
adapter.notifyDataSetChanged();
} else {
Toast.makeText(this, "附近没有蓝牙", Toast.LENGTH_SHORT).show();
}
}
//取得gatt 对应的service
private BluetoothGattService getGattService(BluetoothGatt gatt, UUID serviceUUID) {
List<BluetoothGattService gattServices = gatt.getServices();
for (BluetoothGattService gattService : gattServices) {
if (gattService.getUuid().equals(serviceUUID)) {
return gattService;
}
}
return null;
}
//取得service对应的characteristic
private BluetoothGattCharacteristic getGattCharacteristic(BluetoothGattService gattService, UUID characteristicUUID) {
List<BluetoothGattCharacteristic gattCharacteristics = gattService.getCharacteristics();
for (BluetoothGattCharacteristic gattCharacteristic : gattCharacteristics) {
if (gattCharacteristic.getUuid().equals(characteristicUUID)) {
return gattCharacteristic;
}
}
return null;
}
//注册蓝牙扫描监听
private void registeScanReceiver() {
Log.i("tag", "registeScanReceiver()");
scanReceiver = new ScanReceiver();
IntentFilter filter = new IntentFilter();
filter.addAction(BluetoothDevice.ACTION_FOUND);
filter.addAction(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
registerReceiver(scanReceiver, filter);
}
//定义蓝牙扫描监听类 添加device ， 更新界面
class ScanReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
Log.i("tag", " BluetoothReceiver / ScanReceiver onReceive() action=" intent.getAction());
String scanAction = intent.getAction();
if (scanAction.equals(BluetoothDevice.ACTION_FOUND)) {
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
if (!devices.contains(device)) {
devices.add(device);
if (CacheUtils.getBlueDeviceString(MainActivity1.this, device.getAddress()).equals("")) {
CacheUtils.putBlueDeviceString(MainActivity1.this, device.getAddress(), device.getName());
}
updateUi();
}
} else if (scanAction.equals(BluetoothAdapter.ACTION_DISCOVERY_FINISHED)) {
if (devices == null || devices.size() == 0) {
Toast.makeText(MainActivity1.this, "附近没有发现蓝牙设备", Toast.LENGTH_SHORT).show();
}
}
}
}
//注册灯光监听
private void registeLigthReceiver() {
Log.i("tag", "registeReceiver()");
lightReceiver = new LightReceiver();
IntentFilter filter = new IntentFilter();
filter.addAction("openLight");
filter.addAction("closeLight");
registerReceiver(lightReceiver, filter);
}
//定义灯控监听类
class LightReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
Log.i("tag", " BluetoothReceiver /LightReceiver onReceive() action=" intent.getAction());
//
String address = intent.getStringExtra("bluetoothAddress"); //从adapter取得的数据
lightAction = intent.getAction();
// if() 不同设备 不同serviceUUID，不同的characteristicUUID 自己确定
serviceUUID=service4UUID;
characteristicUUID=charAUUID;
if (bluetoothAdapter == null) {
openBluetooth();
}
BluetoothDevice device = bluetoothAdapter.getRemoteDevice(address);
MyBluetoothGattCallback gattCallback = new MyBluetoothGattCallback();
bluetoothGatt = device.connectGatt(MainActivity1.this, false, gattCallback); //回调
}
}
//蓝牙连接/通信回调
class MyBluetoothGattCallback extends android.bluetooth.BluetoothGattCallback {
@Override
public void onConnectionStateChange(BluetoothGatt gatt, int status, int newState) {
super.onConnectionStateChange(gatt, status, newState);
Log.i("tag", "MyBluetoothGattCallback onConnectionStateChange() newState=" newState);
if (newState == BluetoothProfile.STATE_CONNECTED) {
gatt.discoverServices(); //连接成功，开始搜索服务，一定要调用此方法，否则获取不到服务
Log.i("tag", "MyBluetoothGattCallback STATE_CONNECTED ");
} else if (newState == BluetoothProfile.STATE_DISCONNECTED) {
Log.i("tag", "MyBluetoothGattCallback STATE_DISCONNECTED");
}
}
@Override
public void onServicesDiscovered(BluetoothGatt gatt, int status) {
super.onServicesDiscovered(gatt, status);
Log.i("tag", "MyBluetoothGattCallback onServicesDiscovered() status=" status);
if (lightAction.equals("openLight") || lightAction.equals("closeLight")) { //避免 不停更新
if (gattService == null || gattCharacteristic == null || !serviceUUID.equals(service4UUID) || !characteristicUUID.equals(charAUUID)) {
gattService = getGattService(gatt, serviceUUID);
if (gattService != null) {
gattCharacteristic = getGattCharacteristic(gattService, characteristicUUID);
if (gattCharacteristic != null) {
gatt.setCharacteristicNotification(gattCharacteristic, true);
gatt.connect();
}
}
}
if (lightAction.equals("openLight")) {
gattCharacteristic.setValue("openLight"); //这里自己设置 蓝牙模组需要的数据
gatt.writeCharacteristic(gattCharacteristic);
} else if (lightAction.equals("closeLight")) {
gattCharacteristic.setValue("closeLight"); //这里自己设置 蓝牙模组需要的数据
gatt.writeCharacteristic(gattCharacteristic);
}
lightAction = "";
gatt.readRemoteRssi();
}
}
}
@Override
protected void onDestroy() {
super.onDestroy();
Log.i("tag", "onDestroy()");
if (bluetoothAdapter != null) {
bluetoothAdapter.disable();
bluetoothAdapter = null;
}
if (bluetoothGatt != null) {
bluetoothGatt.disconnect();
bluetoothGatt.close();
bluetoothGatt = null;
}
if (lightReceiver != null) {
unregisterReceiver(lightReceiver);
lightReceiver = null;
}
if (scanReceiver != null) {
unregisterReceiver(scanReceiver);
scanReceiver = null;
}
}以上就是本文的全部内容，希望对大家的学习有所帮助。
