Android Open Source - BleSensorTag Ble Utils

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Back to project page BleSensorTag.


The source code is released under:

MIT License

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Java Source Code

package sample.ble.sensortag.ble;
//from   ww w .  j av a2s .c  om
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothGatt;
import android.bluetooth.BluetoothGattCharacteristic;
import android.bluetooth.BluetoothManager;
import android.content.Context;

public class BleUtils {

    public static final int STATUS_BLE_ENABLED = 0;
    public static final int STATUS_BLUETOOTH_NOT_AVAILABLE = 1;
    public static final int STATUS_BLE_NOT_AVAILABLE = 2;
    public static final int STATUS_BLUETOOTH_DISABLED = 3;

    public static BluetoothAdapter getBluetoothAdapter(Context context) {
        // Initializes a Bluetooth adapter.  For API level 18 and above, get a reference to
        // BluetoothAdapter through BluetoothManager.
        final BluetoothManager bluetoothManager =
                (BluetoothManager) context.getSystemService(Context.BLUETOOTH_SERVICE);
        if (bluetoothManager == null)
            return null;
        return bluetoothManager.getAdapter();

    public static int getBleStatus(Context context) {
        // Use this check to determine whether BLE is supported on the device.  Then you can
        // selectively disable BLE-related features.
        if (!context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_BLUETOOTH_LE)) {
            return STATUS_BLE_NOT_AVAILABLE;

        final BluetoothAdapter adapter = getBluetoothAdapter(context);
        // Checks if Bluetooth is supported on the device.
        if (adapter == null) {

        if (adapter.isEnabled())

        return STATUS_BLE_ENABLED;

    public static BleGattExecutor createExecutor(final BleExecutorListener listener) {
        return new BleGattExecutor() {
            public void onConnectionStateChange(BluetoothGatt gatt, int status, int newState) {
                super.onConnectionStateChange(gatt, status, newState);
                listener.onConnectionStateChange(gatt, status, newState);

            public void onServicesDiscovered(BluetoothGatt gatt, int status) {
                super.onServicesDiscovered(gatt, status);
                listener.onServicesDiscovered(gatt, status);

            public void onCharacteristicRead(BluetoothGatt gatt,
                                             BluetoothGattCharacteristic characteristic,
                                             int status) {
                super.onCharacteristicRead(gatt, characteristic, status);
                listener.onCharacteristicRead(gatt, characteristic, status);

            public void onCharacteristicChanged(BluetoothGatt gatt,
                                                BluetoothGattCharacteristic characteristic) {
                super.onCharacteristicChanged(gatt, characteristic);
                listener.onCharacteristicChanged(gatt, characteristic);

Java Source Code List