自定義樣式RatingBar的使用

1.設置佈局文件，自定義ratingbar樣式

 1 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 2     xmlns:tools="http://schemas.android.com/tools"
 3     android:layout_width="match_parent"
 4     android:layout_height="match_parent"
 5     tools:context="${relativePackage}.${activityClass}" >
 6 
 7 
 8     <RatingBar
 9         android:id="@+id/rb"
10         android:layout_width="wrap_content"
11         android:layout_height="30dp"
12         android:layout_marginLeft="20dp"
13         android:layout_marginTop="20dp"
14         android:numStars="5"
15         android:progressDrawable="@drawable/rating_star"
16         android:stepSize="0.5" /> <!-- 自定義ratingbar樣式 -->
17 
18     <TextView
19         android:id="@+id/tv_num"
20         android:layout_width="wrap_content"
21         android:layout_height="wrap_content"
22         android:layout_below="@+id/rb"
23         android:layout_marginLeft="20dp"
24         android:layout_marginTop="20dp"
25         android:text="當前評分是：" />
26 
27     <TextView
28         android:id="@+id/tv"
29         android:layout_width="wrap_content"
30         android:layout_height="wrap_content"
31         android:layout_below="@+id/rb"
32         android:layout_marginTop="20dp"
33         android:layout_toRightOf="@id/tv_num"
34         android:text="0.0"
35         android:textColor="#FF0000" />
36 
37 </RelativeLayout>

2.在activity中設置監聽器

 1 package com.example.ratingbar;
 2 
 3 import android.app.Activity;
 4 import android.os.Bundle;
 5 import android.view.Menu;
 6 import android.view.MenuItem;
 7 import android.view.View;
 8 import android.widget.RatingBar;
 9 import android.widget.RatingBar.OnRatingBarChangeListener;
10 import android.widget.TextView;
11 
12 public class MainActivity extends Activity {
13 
14     private TextView tv;
15     private RatingBar rb;
16 
17     @Override
18     protected void onCreate(Bundle savedInstanceState) {
19         super.onCreate(savedInstanceState);
20         setContentView(R.layout.activity_main);
21         //找到控制項
22         tv = (TextView) findViewById(R.id.tv);
23         rb = (RatingBar) findViewById(R.id.rb);
24         rb.setOnRatingBarChangeListener(new OnRatingBarChangeListener() {//設置ratingbar監聽器
25             
26             @Override
27             public void onRatingChanged(RatingBar ratingBar, float rating, boolean fromUser) {
28                 if(fromUser){//如果是用戶操作
29                     tv.setText(Float.toString(rating));//顯示分數
30                 }
31                 
32             }
33         });
34         
35     }
36 }

3.效果圖