Android-basic control (implemented by Ratingbar)

Android-basic control (implemented by Ratingbar)
1. Review

In the previous article, I learned about Android layout optimization and how to understand and learn SeekBar (you can drag a scroll bar ).

2. Key Points

(1) Implementation of RatingBar

(2) Implementation of OnRatingBarChangeListener

3. 3.1

3.2 layout implementation

 

 

3.3 OnRatingBarChangeListener implementation

 

The initialization control (findviewById) will not be mentioned;

Display with Toast

Class rating_bar1Listener implements OnRatingBarChangeListener {@ Overridepublic void onRatingChanged (RatingBar ratingBar, float rating, boolean fromUser) {Toast. makeText (this, rating + stars, Toast. LENGTH_SHORT ). show ();}}

 

3.4 bind a listening event

 

rating_bar1.setOnRatingBarChangeListener(new rating_bar1Listener());