android set visibility of a button on timer

Question

I have an app that shows a disclaimer at the beginning of the program. I want a button to remain invisible for a set amount of time, and then become visible. I set up a thread that sleeps for 5 seconds, and then tries to make the button visible. However ,I get this error when I execute my code:

08-02 21:34:07.868: ERROR/AndroidRuntime(1401): android.view.ViewRoot$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.

How can I count 5 seconds, and then make the button visible? THanks.

Thread splashTread = new Thread() {
           @Override
           public void run() {
            try {
                   int waited = 0;
                   while(_active && (!_ok2)) {
                       sleep(100);
                       if(_active) {
                           waited += 100;
                           if(waited >= _splashTime)
                           {
                            turnButtonOn();
                           }

                       }
                   }
               } catch(InterruptedException e) {
                   // do nothing
               } finally {
                   finish();
                   startActivity(new Intent("com.lba.mixer.Choose"));

               }
    };
    splashTread.start();


      public static void turnButtonOn() {
         okButton.setVisibility(View.VISIBLE);
      }

Solution 1

The problem is that you're not in the UI thread when you call okButton.setVisibility(View.VISIBLE);, since you create and run your own thread. What you have to do is get your button's handler and set the visibility through the UI thread that you get via the handler.

So instead of

okButton.setVisibility(View.VISIBLE)

you should do

okButton.getHandler().post(new Runnable() {
    public void run() {
        okButton.setVisibility(View.VISIBLE);
    }
});

Solution 2

I found this to be a much simpler solution. Visibility on 7 second delay

continuebutton.setVisibility(View.INVISIBLE);
continuebutton.postDelayed(new Runnable() {
        public void run() {
            continuebutton.setVisibility(View.VISIBLE);
        }
    }, 7000);

Solution 3

I found this a Better solution to the problem (button id = but_resend)

define handler

  private Handler handler;

call function in extend class

 showButtons();

define after class

private void showButtons() {
        handler = new Handler();

        handler.postDelayed(new Runnable() {
            @Override
            public void run() {
                ((Button) findViewById(R.id.but_resend)).setVisibility(View.VISIBLE);
            }
        }, 20000); // produce 20 sec delay in button visibility


    }

and keep in mind to hide the visibility in the.xml file by

android:visibility="invisible"

Comments

[Tushar Pandey]

Can we find something like , particular View Section of ListView is Visible from 3 ( any instance of time ) seconds .

[Sonhja]

Wow, no problem with this one!

[iBEK]

Still works fine in 2017, need to delay closing of my listView in searchView to make the softInPutMode close first and then listView afterwords. It's a great workaround for the jumping view in ConstraintLayout with rising and closing of softInputMode.

[Kartik Arora]

Thankyou bro, that was extremely helpful.