RatingBar 星型进度条

最新推荐文章于 2019-12-07 11:24:20 发布

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分类专栏： Android

本文链接：https://blog.youkuaiyun.com/wyb_hardworking/article/details/25033547

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本文介绍了如何在Android中使用RatingBar组件创建星型进度条，常见于评分和评价场景。示例提供了XML布局代码。

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如图所示，星级进度条一般用于评价等级。

xml代码如下

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="${packageName}.${activityClass}" >

    <RatingBar
        android:id="@+id/firstRatingBar"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:numStars="5"
        android:stepSize="0.5"/>
	<Button 
	    android:id="@+id/button"
	    android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/firstRatingBar"
        android:text="button"/>
</RelativeLayout>

Java代码如下

package com.wyb.s01_e18_ratingbar;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.RatingBar;
import android.widget.RatingBar.OnRatingBarChangeListener;

public class MainActivity extends Activity {

	private RatingBar ratingBar;
	private Button button;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		ratingBar = (RatingBar)findViewById(R.id.firstRatingBar);
		button = (Button)findViewById(R.id.button);
		
		ratingBar.setOnRatingBarChangeListener(new RatingBarListener());
		button.setOnClickListener(new buttonListener());
	}
	class RatingBarListener implements OnRatingBarChangeListener{

		@Override
		public void onRatingChanged(RatingBar ratingBar, float rating, boolean fromUser) {
			// TODO Auto-generated method stub
			System.out.println("rating : "+rating+" fromUser : "+fromUser);
		}
		
	}
	class buttonListener implements OnClickListener{

		@Override
		public void onClick(View v) {
			// TODO Auto-generated method stub
			ratingBar.setRating(ratingBar.getRating()+1.0f);;
		}
		
	}
}