How to create Custom Ratings bar in Android

Question

Hello all i need to perform Ratings in my application... SO i need to create custom Ratings bar... Can Anyone Help me in this?

Answer 1

When creating a custom rating bar that displays a solid gradient line running on a SeekBar-like track, rather than stars, I also encountered a problem related to the vertical centering of the background (track drawable). This is the flawed drawable code I used originally (which generated the problem), as suggested by Android developer and other StackOverflow entries:

The problem here is the first item, which relates to the background of the custom RatingBar. Many entries will tell you to set the layout_minHeight feature to some large value to avoid a vertical spatial disconnect between the thumb and its track. This was not the solution for me - when viewed on a tablet, the background was still drawing to its smaller phone-based size - so the track was consistently positioned well above the center of the RatingBar track. The solution is to remove this entry in the RatingBar drawable, so it now looks like this:

Then, in the style definition of the custom RatingBar, set the layout_background to the the track drawable. Mine looks like this:

(Previously, the background setting here was undefined.).

This is the entry in my layout, which uses both the style and the drawables:

So, to summarize, do not set the background (track) feature in your custom RatingBar drawable, set it in the layout_background feature of your custom RatingBar style. This ensures the track is always vertically centered in a horizontal RatingBar. (Remember, in this custom RatingBar, instead of using stars or other isolated images as the rating, I'm using a gradient line that "grows" or "shrinks" horizontally to display the rating - this rating line uses a SeekBar-like thumb running on a SeekBar-like "track".)