Android - Fade out bitmap image on canvas

Question

I am drawing a scaled bitmap onto a canvas and would like to fade my image out at a specified time.

Basically, when my character image goes over a certain section of the

Answer 1

        if(indexX == mazeFinishX && indexY == mazeFinishY)
        {
            canvas.drawBitmap(finish, j * totalCellWidth, i * totalCellHeight, null);
            // As soon as the character moves over this square they are automtically re-directs to new page
            new CountDownTimer(0500, 1000) {
                @Override
                public void onTick(long millisUntilFinished) {}
                @Override
                public void onFinish() {
Paint paint = new Paint();
paint.setAlpha(25);
canvas.drawBitmap(chrImg, 0, 0, paint);
                }
            }.start();
            new CountDownTimer(0500, 1000) {
                @Override
                public void onTick(long millisUntilFinished) {}
                @Override
                public void onFinish() {
Paint paint = new Paint();
paint.setAlpha(45);
canvas.drawBitmap(chrImg, 0, 0, paint);             }
            }.start();
            new CountDownTimer(0500, 1000) {
                @Override
                public void onTick(long millisUntilFinished) {}
                @Override
                public void onFinish() {
Paint paint = new Paint();
paint.setAlpha(70);
canvas.drawBitmap(chrImg, 0, 0, paint);             }
            }.start();
            new CountDownTimer(0500, 1000) {
                @Override
                public void onTick(long millisUntilFinished) {}
                @Override
                public void onFinish() {
Paint paint = new Paint();
paint.setAlpha(100);
canvas.drawBitmap(chrImg, 0, 0, paint);             }
            }.start();
            // This is where I want to fade the character image out before the re-direct
            new CountDownTimer(3000, 1000) {

            @Override
            public void onTick(long millisUntilFinished) {
                // TODO Auto-generated method stub

            }

            @Override
            public void onFinish() {
                // TODO Auto-generated method stub

                    Intent i = new Intent(currentclass.this, nextClass.class);
                    startActivity(i);
            }
        }.start();

    }

this will make your bitmap becomes transparent ( the alpha will be 100 ) .. and then redirect to the next class after 3 seconds.

Update: for the bitmap you can't use .setAlpha so we must use a paint, so we created a new paint each time then set the bitmap with the paint. but if you have an imageView you can use .setalpha