In Android, how do I smoothly fade the background from one color to another? (How to use threads)

Question

I\'ve been playing with Android programming on and off for a couple of weeks, and I\'m trying to get something to work that seems simple, but I think I am missing something.

Answer 1

A couple more solutions for old devices:

TIMER

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    final Timer myTimer = new Timer();
    final View myview = getWindow().getDecorView().findViewById(
            android.R.id.content);

    myTimer.schedule(new TimerTask() {
        int color = 0;
        @Override
        public void run() {
            // If you want to modify a view in your Activity
            runOnUiThread(new Runnable() {
                public void run() {
                    color++;
                    myview.setBackgroundColor(Color.argb(255, color, color,
                            color));
                    if (color == 255)
                        myTimer.cancel();
                }
            });
        }
    }, 1000, 20); // initial delay 1 second, interval 1 second

}

THREAD

    @Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    new Thread() {
        int color = 0;
        View myview = getWindow().getDecorView().findViewById(
                android.R.id.content);
        @Override
        public void run() {
            for (color = 0; color < 255; color++) {
                try {
                    sleep(20);
                    runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            myview.setBackgroundColor(Color.argb(255,
                                    color, color, color));
                        }
                    });
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }
    }.start();
}