Android常用控件之RatingBar的使用

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mb5ff40c7a158f2 2013-09-01 00:44:00

文章标签 android 控件 ide xml bundle 文章分类 代码人生

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

Android常用控件之RatingBar的使用_ide

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);
      }
    }

   }
}