Custom Progress Bar in Android? [closed]

Answer 1

As shown here you can use image views to get custom scroll bar like effect.

The layout XML for custom progress bar in that example is:

And then he creates a list of images in class file as:

/**
 * Loads the layout and sets the initial set of images
 */
private void prepareLayout() {
    LayoutInflater inflater = (LayoutInflater) context
            .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View view = inflater.inflate(R.layout.myprogressbar, null);
    addView(view);

    imageHolders = new ArrayList();
    imageHolders.add((ImageView) view.findViewById(R.id.imgOne));
    imageHolders.add((ImageView) view.findViewById(R.id.imgTwo));
    imageHolders.add((ImageView) view.findViewById(R.id.imgThree));

    // Prepare an array list of images to be animated
    images = new ArrayList();

    images.add("progress_1");
    images.add("progress_2");
    images.add("progress_3");
    images.add("progress_4");
    images.add("progress_5");
    images.add("progress_6");
    images.add("progress_7");
    images.add("progress_8");
    images.add("progress_9");
}

Then he starts a Thread that sleeps for 0.3 seconds and calls the handler with handler.sendEmptyMessage(0); and finally in Handler he do the rest of the work of images:

@Override
public void handleMessage(Message msg) {
    int currentImage = 0;
    int nextImage = 0;
    // Logic to change the images
    for (ImageView imageView : imageHolders) {
        currentImage = Integer.parseInt(imageView.getTag().toString());
        if (currentImage < 9) {
            nextImage = currentImage + 1;
        } else {
            nextImage = 1;
        }
        imageView.setTag("" + nextImage);
        imageView.setImageResource(getResources().getIdentifier(
                images.get(nextImage - 1), "drawable",
                "com.beanie.example"));
    }
    super.handleMessage(msg);
}

Also take a look at here and here.