I have an activity in which there is a continuous updation of display on the screen and also updation of text to speech. The problem here is while the UI is updating, if I press home button then also the text to speech is not stopped. It is running continuously. I have tried to write the `stop()` and also `shutdown()` in `pause()` and also in `destroy()` but still its not working. Can anyone please let me know how to stop that?

Please help me. 

Thanks a lot.