问如何创建多个ImageViews的更新函数？

EN

...
blob1.setX(generateRandomNumber(0, 930));
blob1.setY(generateRandomNumber(0, 1750));
blob2.setX(generateRandomNumber(0, 930));
blob2.setY(generateRandomNumber(0, 1750));
...

//start the timer
    timer.schedule(new TimerTask() {
        @Override
        public void run() {
            handler.post(new Runnable() {
                @Override
                public void run() {
                    playerMovement();
                    updateBlobPosition(blob1);
                    updateBlobPosition(blob2);
                    collision(blob1);
                    collision(blob2);
                }
            });
        }
    }, 0, 20);

...
protected ImageView updateBlobPosition(ImageView blob) {

    blobX = blob.getX();
    blobY = blob.getY();

    blobX += blobVelocityX;
    blobY += blobVelocityY;

    //left
    if ((blob.getX() + blobVelocityX < 0)) {
        blobVelocityX = -blobVelocityX;
    }
    //right
    else if (blob.getX() - blobVelocityX > 930) {
        blobVelocityX = -Math.abs(blobVelocityX);
    }
    //top
    if ((blob.getY() + blobVelocityY < -20)) {
        blobVelocityY = -blobVelocityY;
    }
    //bottom
    else if (blob.getY() - blobVelocityY > 1750) {
        blobVelocityY = -Math.abs(blobVelocityY);
    }

    blob.setX(blobX);
    blob.setY(blobY);

    return blob;
}