android 评分组件 RatingBar

在main.xml中

<?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 //评分组件

android:id="@+id/ratingbarA"

android:numStars="5" //一共5颗星

android:stepSize="0.5" //每次操作的歩长是0.5个

android:isIndicator="false" //用户可以操作

android:layout_width="wrap_content"

android:layout_height="wrap_content"/>

<RatingBar

android:id="@+id/ratingbarB"

android:numStars="5"

android:rating="3" //默认值为3颗星

android:isIndicator="true" //用户不可以操作

android:layout_width="wrap_content"

android:layout_height="wrap_content"/>

<TextView //以后对于分数改变是时候可以再这个组件上显示

android:id="@+id/text"

android:layout_width="fill_parent"

android:layout_height="wrap_content"/>

</LinearLayout>

在MyRatingBarDemo.java程序中

package com.tarena.ratingbar;

import android.app.Activity;

import android.os.Bundle;

import android.text.method.ScrollingMovementMethod;

import android.widget.RatingBar;

import android.widget.RatingBar.OnRatingBarChangeListener;

import android.widget.TextView;

public class MyRatingBarDemo extends Activity {

private RatingBar ratingBarA = null;

private TextView text = null;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

super.setContentView(R.layout.main);

this.ratingBarA = (RatingBar) super.findViewById(R.id.ratingbarA);

this.text = (TextView) super.findViewById(R.id.text);

this.ratingBarA.setOnRatingBarChangeListener(new OnRatingBarChangeListenerImpl());

this.text.setMovementMethod(ScrollingMovementMethod.getInstance()); //设置文本可滚动

}

private class OnRatingBarChangeListenerImpl implements OnRatingBarChangeListener{

public void onRatingChanged(RatingBar ratingBar, float rating,

boolean fromUser) {

MyRatingBarDemo.this.text.append("当前值为: " + ratingBar

.getRating() + " , 歩长为: " + ratingBar.getStepSize() + "\n");

}

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