Android评分控件RatingBar使用实例解析

<&＃63;xml version="1.0" encoding="utf-8"&＃63;>


 
 
 

 
 
 

 
 
 

 
 
 

import android.app.Activity;
import android.os.Bundle;
import android.widget.RatingBar;
import android.widget.RatingBar.OnRatingBarChangeListener;

public class MainActivity extends Activity {

 // 可交互的两个 ratingBar
 private RatingBar ratingBar1 = null;
 private RatingBar ratingBar2 = null;

 // 不可交互的两个 ratingBar
 private RatingBar ratingBarOne= null;
 private RatingBar ratingBarTwo = null;

 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  // 设置布局页面
  setContentView(R.layout.activity_main);
  // 初始化函数
  initView();
 }

 // 初始化函数
 public void initView() {
  // 通过findViewById分别获得控件
  ratingBar1 = (RatingBar) findViewById(R.id.ratingBar1);
  ratingBar2 = (RatingBar) findViewById(R.id.ratingBar2);
  ratingBarOne= (RatingBar) findViewById(R.id.ratingBarOne);
  ratingBarTwo = (RatingBar) findViewById(R.id.ratingBarTwo);

  // 为ratingBar1添加 OnRatingBarChangeListener
  // 当用户交互改变分值时，触发该事件
  ratingBar1.setOnRatingBarChangeListener(new OnRatingBarChangeListener() {
     // 该方法可以获取到 3个参数
     public void onRatingChanged(RatingBar ratingBar,
       float rating, boolean paramBoolean) {
      // 第一个参数 当前评分修改的 ratingBar
      System.out.println(ratingBar);
      // 第二个参数 当前评分分数，范围 0~星星数量
      System.out.println(rating);
      // 第三个参数 如果评分改变是由用户触摸手势或方向键轨迹球移动触发的，则返回true
      System.out.println(paramBoolean);

      //将不可交互的展示型ratingBarOne的评分分数通过setRating
      //设置成onRatingChanged方法获得的ratingBar1的分值参数rating 
      ratingBarOne.setRating(rating);
     }
    });

  // 为ratingBar2添加 OnRatingBarChangeListener
  // 当用户交互改变分值时，触发该事件
  ratingBar2.setOnRatingBarChangeListener(new OnRatingBarChangeListener() {
     public void onRatingChanged(RatingBar ratingBar,
       float rating, boolean paramBoolean) {
      //将不可交互的展示型ratingBarTwo的评分分数通过setRating
      //设置成onRatingChanged方法获得的ratingBar2的分值参数rating 
      ratingBarTwo.setRating(rating);
     }
    });
 }
}