RatingBar控件比较常见就是用来做评分控件，先上图看看什么是RatingBar

在布局文件中声明

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:orientation="vertical" >

    <RatingBar

        android:id="@+id/ratingbar"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:numStars="5"

        android:stepSize="0.1"/>

</LinearLayout>

numStars表示有多少颗星， stepSize表示每次滑动的大小

在Activity中的代码

package com.example.ratingbar;

import android.app.Activity;

import android.os.Bundle;

import android.widget.RatingBar;

import com.example.widgetdemo.R;

public class ratingBarActivity extends Activity {

	private RatingBar ratingBar = null;

	@Override

	protected void onCreate(Bundle savedInstanceState) {

		// TODO Auto-generated method stub

		super.onCreate(savedInstanceState);

		setContentView(R.layout.ratingbar);

		ratingBar = (RatingBar)findViewById(R.id.ratingbar);

		ratingBar.setOnRatingBarChangeListener(new ratingChangeListener());

	}

	 class ratingChangeListener implements RatingBar.OnRatingBarChangeListener{

		@Override

		public void onRatingChanged(RatingBar ratingBar, float rating,

				boolean fromUser) {

			// TODO Auto-generated method stub

			if(fromUser){

				System.out.println("onRatingChanged " + rating);

			}

		}

	 }

}

这个控件比较简单，同样也可以参考源码

点击打开链接