（java，bluetooth-lowenergy，ble）如何通過BLE從android設備獲取數據

Question

我是BLE（藍牙低能耗）的初學者。 我想通過BLE從android設備獲取數據。

我已經在Google文檔中閱讀了有關特征的信息。 而且我已經在Google上進行過搜索。

我的設備沒有響應我的請求字節碼。 我認為這是因為我設置了錯誤的特征。 cus我認為我對特征並不完全了解。

請問有人幫我設定正確的特征嗎？

這是自定義的Uuid（最好在頂部看到添加的圖像。）

CUSTOM SERVICE
0783b03e-8535-b5a0-7140-a304d2495cb7

NOTIFY Uuid : 0783B03E-8535-B5A0-7140-A304D2495CB8
Read Uuid : 00002a19-0000-1000-8000-00805f9b34fb
Write Uuid : 0783b03e-8535-b5a0-7140-a304d2495cba

這是我設置的Uuid

    public final UUID serviceUuid = UUID.fromString("0783b03e-8535-b5a0-7140-a304d2495cb7");
    public final UUID notifyUuid = UUID.fromString("0783b03e-8535-b5a0-7140-a304d2495cb8");
    public final UUID readUuid = UUID.fromString("00002902-0000-1000-8000-00805f9b34fb");
    public final UUID writeUuid = UUID.fromString("0783b03e-8535-b5a0-7140-a304d2495cba");

這是我的代碼

BluetoothHandler.java

 targetGattCharacteristic = targetGattService.getCharacteristic(Define.GetInstance().notifyUuid);
        BluetoothGattCharacteristic readGattCharacteristic = targetGattService.getCharacteristic(Define.GetInstance().notifyUuid);

        if (readGattCharacteristic != null) {
            mBleService.setCharacteristicNotification(readGattCharacteristic, true);

        } else {
            callInterface();
            return;
        }

(BluetoothService.java)

    public void setCharacteristicNotification(BluetoothGattCharacteristic characteristic,
                                              boolean enabled) {
        if (mBluetoothAdapter == null || mBluetoothGatt == null) {
            Log.w(TAG, "BluetoothAdapter not initialized");
            return;
        }

        mBluetoothGatt.setCharacteristicNotification(characteristic, enabled);

        BluetoothGattDescriptor gD = new BluetoothGattDescriptor(UUID.fromString(Define.GetInstance().readUuid.toString()),  BluetoothGattDescriptor.PERMISSION_WRITE | BluetoothGattDescriptor.PERMISSION_READ);
        characteristic.addDescriptor(gD);
        if (Define.GetInstance().notifyUuid.equals(characteristic.getUuid())) {
            BluetoothGattDescriptor descriptor = characteristic.getDescriptor(
                    UUID.fromString(Define.GetInstance().readUuid.toString()));
            descriptor.setValue(BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE);
            mBluetoothGatt.writeDescriptor(descriptor);

        }
    }

Answer 1

我通過參考此網站解決了它。 https://medium.com/@avigezerit/bluetooth-low-energy-on-android-22bc7310387a