デバイスBLEから値を読み取ることができるAndroid Studioでアプリを構築しています。このデバイスには、4 つのサービスがあります。4番目のサービスには3つの特徴があります。この 4 番目のサービスのすべての特徴を読みたいと思います。
このデバイスは、より多くの情報を送信できるため、アプリケーションがデバイス BLE から到着するすべての情報を保存できるようにしたいと考えています。
これは私のコードです：
@TargetApi(21)
public class BLEActivity extends BaseActivity {
private BluetoothAdapter mBluetoothAdapter;
private int REQUEST_ENABLE_BT = 1;
private Handler mHandler;
private static final long SCAN_PERIOD = 10000;
private BluetoothLeScanner mLEScanner;
private ScanSettings settings;
private List<ScanFilter> filters;
private BluetoothGatt mGatt;
String mCurrentService;
TextView tvBLE;
ImageButton ibDownload;
BluetoothDevice currDevice;
private int id = 1000;
public SensorDataAdapter adapter;
final BLEActivity classe = this;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_ble);
mHandler = new Handler();
//mSensors = db.getAllSensorTypes();
//BLUETOOTH LOW ENERGY NON SUPPORTATO
if (!getPackageManager().hasSystemFeature(PackageManager.FEATURE_BLUETOOTH_LE)) {
Toast.makeText(this, "BLE Not Supported",
Toast.LENGTH_SHORT).show();
finish();
}
final BluetoothManager bluetoothManager =
(BluetoothManager) getSystemService(Context.BLUETOOTH_SERVICE);
mBluetoothAdapter = bluetoothManager.getAdapter();
//VERIFICO SE IL BLUETOOTH DEL DISPOSITIVO E' ABILITATO
//OPPURE NO. SE NON è ABILITATO DEVO CHIEDERE ALL'UTENTE DI ATTIVARLO
// Ensures Bluetooth is available on the device and it is enabled. If not,
if (mBluetoothAdapter == null || !mBluetoothAdapter.isEnabled()) {
Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT);
}
ibDownload.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if(currDevice!=null){
mGatt = currDevice.connectGatt(getBaseContext(), false, gattCallback);
scanLeDevice(false);// will stop after first device detection
}
}
});
}
private void scanLeDevice(final boolean enable) {
if (enable) {
mHandler.postDelayed(new Runnable() {
@Override
public void run() {
if (Build.VERSION.SDK_INT < 21) {
mBluetoothAdapter.stopLeScan(mLeScanCallback);
} else {
mLEScanner.stopScan(mScanCallback);
}
}
}, SCAN_PERIOD);
if (Build.VERSION.SDK_INT < 21) {
mBluetoothAdapter.startLeScan(mLeScanCallback);
} else {
mLEScanner.startScan(filters, settings, mScanCallback);
}
} else {
if (Build.VERSION.SDK_INT < 21) {
mBluetoothAdapter.stopLeScan(mLeScanCallback);
} else {
mLEScanner.stopScan(mScanCallback);
}
}
}
private ScanCallback mScanCallback = new ScanCallback() {
@Override
public void onScanResult(int callbackType, ScanResult result) {
Log.i("callbackType", String.valueOf(callbackType));
Log.i("result", result.toString());
BluetoothDevice btDevice = result.getDevice();
connectToDevice(btDevice);
}
@Override
public void onBatchScanResults(List<ScanResult> results) {
for (ScanResult sr : results) {
Log.i("ScanResult - Results", sr.toString());
}
}
@Override
public void onScanFailed(int errorCode) {
Log.e("Scan Failed", "Error Code: " + errorCode);
}
};
private BluetoothAdapter.LeScanCallback mLeScanCallback =
new BluetoothAdapter.LeScanCallback() {
@Override
public void onLeScan(final BluetoothDevice device, int rssi,
byte[] scanRecord) {
runOnUiThread(new Runnable() {
@Override
public void run() {
Log.i("onLeScan", device.toString());
connectToDevice(device);
}
});
}
};
public void connectToDevice(BluetoothDevice device) {
if (mGatt == null) {
currDevice = device;
ibDownload.setEnabled(true);
ibDownload.setImageResource(R.drawable.download_ok);
}
}
private final BluetoothGattCallback gattCallback = new BluetoothGattCallback() {
@Override
public void onConnectionStateChange(BluetoothGatt gatt, int status, int newState) {
Log.i("onConnectionStateChange", "Status: " + status);
switch (newState) {
case BluetoothProfile.STATE_CONNECTED:
Log.i("gattCallback", "STATE_CONNECTED");
gatt.discoverServices();
break;
case BluetoothProfile.STATE_DISCONNECTED:
Log.e("gattCallback", "STATE_DISCONNECTED");
break;
default:
Log.e("gattCallback", "STATE_OTHER");
}
}
@Override
public void onServicesDiscovered(BluetoothGatt gatt, int status) {
List<BluetoothGattService> services = gatt.getServices();
Log.i("onServicesDiscovered", services.toString());
;
for(BluetoothGattService srv : services){
// if(srv.getUuid().toString().equals(mSensors.get(1).getServUid())){
mCurrentService = srv.getUuid().toString();
//RECUPERO SOLO IL SERVIZIO CON UID 1130
if(mCurrentService.contains("1130")){
List<BluetoothGattCharacteristic> mListCars = srv.getCharacteristics();
//leggo le caratteristiche del servizio che cerco
for(BluetoothGattCharacteristic bc : mListCars){
//recupero solo le caratteristiche 1131, 1132
if(bc.getUuid().toString().contains("1131") ||
bc.getUuid().toString().contains("1132")){
//LEGGO LE 2 CARATTERISTICHE NECESSARIE
gatt.readCharacteristic(srv.getCharacteristic(bc.getUuid()));
}
}
}else{
Log.i("SERVIZIO NON CORRETTO", "SERVIZIO NON CORRETTO");
}
// }
}
}
@Override
public void onCharacteristicRead(BluetoothGatt gatt,
BluetoothGattCharacteristic
characteristic, int status) {
Log.i("onCharacteristicRead", characteristic.toString());
SensorData mSenData = new SensorData();
mSenData.setValue(characteristic.getStringValue(0));
Log.i("LETTURA DATI ", mSenData.getValue());
mSenData.setIdType(++id);
mSenData.setCharacteristic(characteristic.getUuid().toString());
mSenData.setValueTimestamp(db.getDateTime());
db.insertSensorData(mSenData);
}
};
}
このコードでは、サービスの最初の特性を 1 つ読み取り、最初の特性の値を 1 つだけ読み取ることができます。
BLE デバイスのすべての特性のすべての値を自動的に読み取りたいです。これを行うためにコードを変更するにはどうすればよいですか?