How to create Rating bar in Android Studio #11 || Android App Development Tutorials 2020
#RatingBar #AndroidStudio #starRating
Star RatingBar is used to get the rating from the app user. A user can simply touch, drag or click on the stars to set the rating value. The value of rating always returns a floating point number which may be 1.0, 2.5, 4.5 etc.
In Android, RatingBar is an extension of ProgressBar and SeekBar which shows a rating in stars. RatingBar is a subclass of AbsSeekBar class.
The getRating() method of android RatingBar class returns the rating number.
getRating():
You can get the rating number from a RatingBar by using getRating() method. This method returns a Floating Point number. Below we get the current rating number from a RatingBar.
getNumStars():
You can get the number of stars of a RatingBar by using getNumstars() method. This method returns int value. In below code we get the total number of stars of a RatingBar.
Now let’s we discuss some important attribute that helps us to configure a RatingBar in XML file (layout).
1. id: id is an attribute used to uniquely identify a rating bar.
2. background: background attribute is used to set the background of a RatingBar. We can set a color or a drawable in the background of a rating bar.
Below we set the red color for the background of a rating bar.
3. numStars: numStars attribute is used to set the number of stars (or rating items) to be displayed in a rating bar. By default a rating bar shows five stars but we can change it using numStars attribute.
numStars must have a integer number like 1,2 etc.
Below we set num stars value to 7 of RatingBar
4. rating: Rating attribute set the default rating of a rating bar. It must be a floating point number.
Below we set default rating to 3.5 for a rating bar
5. padding: padding attribute is used to set the padding from left, right, top or bottom.
paddingRight: set padding from the right side of the rating bar.
paddingLeft: set padding from the left side of the rating bar.
paddingTop: set padding from the top side of the rating bar.
paddingBottom: set the padding from the bottom side of the rating bar.
Padding: set the padding from the all side’s of the rating bar.
Below we set the 20dp padding from all the side’s of the rating bar.
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5. Check box
6. Switch
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9. Seek Bar
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