CODEWITHSUNDEEP
android
Noitidart
Noitidart

Reputation: 37328

Update text in a TextView from a Thread

I have added a TextView to a RelativeLayout that I already added a SurfaceView to. I can get the TextView to display text over my SurfaceView.

rl = new RelativeLayout(this);
tv = new TextView(this);
tv.setText(Integer.toString(GameScreen.score));
tv.setTextSize(50);
tv.setPadding(390, 50, 0, 0);
tv.setTextColor(Color.BLACK);
rl.addView(renderView);
rl.addView(tv);
setContentView(rl);

Then in my GameScreen class's update method i put:

game.getTextView().setText(Integer.toString(score));

And it gives me the error:

android.view.ViewRootImpl$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.

What can I do to get around this ?

Upvotes: 0

Views: 1732

Answers (3)

Vivek Bhardwaj
Vivek Bhardwaj

Reputation: 528

Use this peice of code.. Um sure it will help you out ! 

private void runThread() {

    new Thread() {
        public void run() {

                try {
                    runOnUiThread(new Runnable() {

                        @Override
                        public void run() {
                           game.getTextView().setText(Integer.toString(score));
                        }
                    });

                } catch (InterruptedException e) {
                    e.printStackTrace();
                }

        }
    }.start();

Let me know if it works! :)

Upvotes: 1

Mustansar Saeed
Mustansar Saeed

Reputation: 2790

Use the following which is the recommended way to update Widget on UiThread

game.getTextView().post(new Runnable() {
                @Override
                public void run() {
                    game.getTextView().setText(Integer.toString(score));
                }
            });

Hope this helps.

Upvotes: 3

Ankit Aggarwal
Ankit Aggarwal

Reputation: 5385

run your code in the UI thread. You cannot do UI operations from a worker thread.

your_context.runOnUiThread(new Runnable() {
    public void run(){   
        game.getTextView().setText(Integer.toString(score));
    }
});

Upvotes: 1

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