Android 星级评分条的基本用法

1. <?xml version="1.0" encoding="utf-8"?>
2. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
3.     xmlns:app="http://schemas.android.com/apk/res-auto"
4.     xmlns:tools="http://schemas.android.com/tools"
5.     android:layout_width="match_parent"
6.     android:layout_height="match_parent"
7.     tools:context=".StarActivity">
8.     <RatingBar
9.         android:id="@+id/rb_star"
10.         android:layout_width="wrap_content"
11.         android:layout_height="wrap_content"
12.         android:numStars="5"
13.         android:stepSize="0.5"
14.         android:indeterminate="false"
15.         android:rating="3"
16.         />
17. </LinearLayout>

1. @Override
2.     protected void onCreate(Bundle savedInstanceState) {
3.         super.onCreate(savedInstanceState);
4.         setContentView(R.layout.activity_star);
5. 
6.         rb_star = findViewById(R.id.rb_star);
7. 
8.         //获取选中的星数
9.         String state = String.valueOf(rb_star.getRating());
10.         //获取每次至少改变几颗星
11.         String step = String.valueOf(rb_star.getStepSize());
12.         //获取当前进度
13.         String progress = String.valueOf(rb_star.getProgress());
14.         Toast.makeText(this, "获取选中的星数：" + state, Toast.LENGTH_SHORT).show();
15.         Toast.makeText(this, "每次改变的星数：" + step, Toast.LENGTH_SHORT).show();
16.         Toast.makeText(this, "获取当前进度：" + progress, Toast.LENGTH_SHORT).show();
17.         //设置评分改变监听器
18.         rb_star.setOnRatingBarChangeListener(new RatingBar.OnRatingBarChangeListener() {
19.             @Override
20.             public void onRatingChanged(RatingBar ratingBar, float rating, boolean fromUser) {
21.                 //获取当前进度
22.                 int progress1 = ratingBar.getProgress();
23.                 Toast.makeText(StarActivity.this, "获取当前进度"+progress1, Toast.LENGTH_SHORT).show();
24.             }
25.         });
26.     }
27. }