Android APP:How to update the services?

[kk]

Hi,all!

I am programing an android ble app.And I have successfully connected to my device and get my own service(uuid:0x1600),and the characteristic in it(uuid:0x1601).

But the problem is, I modified my own service uuid from 0x1600 to 0x1500, but my APP still find the service's uuid is 0x1600.By the way,I am pretty sure the service's uuid has changed to 0x1500 because I tested it with Master Concrol Panel.

And my code is:

BluetoothGatt mBluetoothGatt;
List<BluetoothGattService> gattServices;
...
gattServices=mBluetoothGatt.getServices();
for (BluetoothGattService gattService : gattServices){
   service_uuid = gattService.getUuid().toString();
}

Can someone explain this for me,thank you very much!

[kk]

I think I got my answer from this:https://devzone.nordicsemi.com/question/31835/incorrect-service-uuid/

The reason might be this:

the caches of my phone stored the resent data about my service,so even I changed my uuid the chches still used the old one.

And Cache can be cleared by turning the bluetooth off and on. Doing so I successfully change my uuid. Thank you very much!