Android RatingBar案例

最新推荐文章于 2025-09-10 11:40:21 发布

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最新推荐文章于 2025-09-10 11:40:21 发布

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CC 4.0 BY-SA版权

文章标签：移动开发

原文链接：https://my.oschina.net/amigos/blog/60034

本文详细介绍了Android中RatingBar组件的使用方法，包括如何设置星星数量、当前评分、步长等属性，并通过实例演示了如何监听评分变化并同步更新多个RatingBar组件。

为什么80%的码农都做不了架构师？>>>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"    
    android:orientation="vertical"    
    android:paddingLeft="10dip"    
    android:layout_width="wrap_content"    
    android:layout_height="wrap_content">    
    <RatingBar 
        android:id="@+id/rbOne"        
        android:layout_width="wrap_content"        
        android:layout_height="wrap_content"        
        android:numStars="3"        
        android:rating="2.5" />    
    <RatingBar android:id="@+id/rbTwo"        
        android:layout_width="wrap_content"        
        android:layout_height="wrap_content"        
        android:numStars="5"        
        android:rating="2.25" />    
    <LinearLayout        
        android:layout_width="match_parent"        
        android:layout_height="wrap_content"        
        android:layout_marginTop="10dip">                
			    <TextView android:id="@+id/textView"            
			        android:layout_width="wrap_content"            
			        android:layout_height="wrap_content" />                    
			    <RatingBar android:id="@+id/rbThree"            
			        style="?android:attr/ratingBarStyleSmall"            
			        android:layout_marginLeft="5dip"            
			        android:layout_width="wrap_content"            
			        android:layout_height="wrap_content"            
			        android:layout_gravity="center_vertical" />                
     </LinearLayout>    
     <RatingBar 
         android:id="@+id/rbFour"        
         style="?android:attr/ratingBarStyleIndicator"        
         android:layout_marginLeft="5dip"        
         android:layout_width="wrap_content"        
         android:layout_height="wrap_content"        
         android:layout_gravity="center_vertical" />            
</LinearLayout>

package com.test;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.widget.RatingBar;
import android.widget.RatingBar.OnRatingBarChangeListener;
import android.widget.TextView;
public class RatingBarDemo_2 extends Activity implements OnRatingBarChangeListener{    
	private RatingBar smallRatingBar = null;     
	private RatingBar indicatorRatingBar = null;     
	private TextView ratingText = null;      
	private RatingBar  rabarone,rabartwoBar;
	/** Called when the activity is first created. */    
	@Override    
	public void onCreate(Bundle savedInstanceState) {        
		super.onCreate(savedInstanceState);        
		setContentView(R.layout.ratingbar_2);                
		ratingText = (TextView) findViewById(R.id.textView);        
		indicatorRatingBar = (RatingBar) findViewById(R.id.rbFour);        
		smallRatingBar = (RatingBar) findViewById(R.id.rbThree);                
		// The different rating bars in the layout. Assign the listener to us.        
		rabarone=((RatingBar)findViewById(R.id.rbOne));   
		rabarone.setOnRatingBarChangeListener(this);
		rabartwoBar=((RatingBar)findViewById(R.id.rbTwo));    
		rabartwoBar.setOnRatingBarChangeListener(this);
		}        
	@Override    
	public void onRatingChanged(RatingBar ratingBar, float rating,      
			boolean fromUser) {        
		// getNumStars        
		// Returns the number of stars shown.      
		final int numStars = ratingBar.getNumStars();      
		ratingText.setText(" 欢迎程度 " + rating + "/" + numStars);            
		if (indicatorRatingBar.getNumStars() != numStars) 
		{                
			indicatorRatingBar.setNumStars(numStars);                
			smallRatingBar.setNumStars(numStars);            
			}            
		// getRating            
		// Gets the current rating 评级(number of stars filled).            
		if (indicatorRatingBar.getRating() != rating) 
		{               
			Log.d("sxp","rating " + rating);                
			indicatorRatingBar.setRating(rating);                
			smallRatingBar.setRating(rating);            
			}            
		// getStepSize            
		// Gets the step size of this rating bar.            
		final float ratingBarStepSize = ratingBar.getStepSize();            
		if (indicatorRatingBar.getStepSize() != ratingBarStepSize) 
		{               
			Log.d("sxp","ratingBarStepSize " + ratingBarStepSize);                
			indicatorRatingBar.setStepSize(ratingBarStepSize);                
			smallRatingBar.setStepSize(ratingBarStepSize);            
			}    
		}
	
	
}

执行效果：