Best way to read multiple characteristics on Android app

Hello,

A fragment of my Android Application need to know the value of 5 characteristics of my CC2650 to built these components (text field, switch on/off for exemple).

But, the problem is read multiple characteristic need time. And for exemple, if i do :

    private void loadBLEData(){

        mBluetoothLeService.readCharacteristic(characteristic1);
        mBluetoothLeService.readCharacteristic(characteristic2);
        mBluetoothLeService.readCharacteristic(characteristic3);
        mBluetoothLeService.readCharacteristic(characteristic4);
        mBluetoothLeService.readCharacteristic(characteristic5);
    }

I only obtain the value of one or two, sometimes 4-5 characteristic, but not the rest, because readCharacteristic is asynchron right?

I call my function loadBLEData on my main thread (in onCreateView() on my fragment).

I know this not the best way, because this behaviours is random, and not clean.

That why i ask to you, how i can do this ?

Thank's you a lot.

Best regards,

Steeve