Question

I am new to android i am trying to create a new thread to invoke another method.
But don’t why it is throwing the error.

here is my stub

void test()

    {

        int i=0;
        Toast.makeText(getApplicationContext(), "Testing", Toast.LENGTH_SHORT).show();

    }
    public void Button2_Click(View v)
    {
        Thread thread = new Thread()
        {
              @Override
              public void run() {
                  test();
              }
          };

        thread.start();
    }

Answer 1

You can’t manipulate the UI from other threads than the main thread, and launching a Toast involves the user interface.

change your test function

    void test()

{

    int i=0;
    Log.d("Test","Testing");

}

now if the thread works you will se a log inside LogCat. If you want to display a Toast from another thread, you must use Handler or runOnUiThread.