Home/ Questions/Q 7694631
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-31T21:21:48+00:00

when I read document about asyntask , they say that: should not update UI

  • 0

when I read document about asyntask, they say that: “should not” update UI thread in doInbackground because doInbackground work on different thread.

that means : this action will dangerous because UI Thread isn’t thread-safe. I understand it. but when I try for test what happen when I update UI Thread in this function. I receive error: (but error doesn’t not look like because aysnchonize, but because we CANNOT do it) 

   (TextView)((Activity)context).findViewById(R.id.text)).setText("StackOverFlow");
//context: reference of context object of UI Thread

Please explain for me. Does we shouldn't or mustn't .

thanks 🙂

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    what I have understand so far with android is…,

    we can’t update UI thread from background thread.
    May be it is the case they have stopped us to update UI from background thread.

    The reason for that is very clear… @ OS level there will be so many thread will be running.

    And also
    different thread from different application, And in that case It will be chaos on the screen, if we can update UI from bg-thread

    • 0