why fun not executed inside Thread kotlin?

Question

• I try execute function inside Thread but that function not executed:

  Thread {
      run {
          Thread.sleep(1000)
          createView(view, inflater)
      }
  }.start()
  

• So i try with another code like:

  thread(start = true) {
      Thread.sleep(1000)
      createView(view, inflater)
  }
  

  and again the createView not executed

• Finally I try:

  Thread {
      Thread.sleep(5000)
      fun run() {
          Runnable {
              createView(view, inflater)
          }
      }
  }.start()
  

  and i got an error:

  "Only the original thread that created a view hierarchy can touch its views."

Answer 1

Only the Main Thread can alter views. So you would need to do something like this:

Thread {
    Thread.sleep(5000)

    this@SomeActivity.runOnUiThread(Runnable {
        createView(view, inflater)
    })
}.start()