Android学习之RatingBar评分组件

main.xml:

<?xml version="1.0" encoding="utf-8"?><LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:id="@+id/MyLayout"android:orientation="vertical"android:layout_width="fill_parent"android:layout_height="fill_parent"><RatingBarandroid:numStars="5"android:stepSize="0.5"android:isIndicator="false"android:id="@+id/ratingbarA"android:layout_width="wrap_content"android:layout_height="wrap_content"/><RatingBarandroid:numStars="5"android:rating="3"android:isIndicator="true"android:id="@+id/ratingbarB"android:layout_width="wrap_content"android:layout_height="wrap_content"/><TextViewandroid:id="@+id/text"android:layout_width="fill_parent"android:layout_height="wrap_content"/></LinearLayout>

MyRatingBarDemo.java:

import android.app.Activity;import android.os.Bundle;import android.widget.RatingBar;import android.widget.TextView;public class MyRatingBarDemo extends Activity {private RatingBar ratingBarA = null; // 定义评分组件private TextView text = null; // 文本显示组件@Overridepublic 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) ;// 取得组件this.ratingBarA.setOnRatingBarChangeListener(new OnRatingBarChangeListenerImpl());// 设置监听}private class OnRatingBarChangeListenerImpl implementsRatingBar.OnRatingBarChangeListener {@Overridepublic void onRatingChanged(RatingBar ratingBar, float rating,boolean fromUser) {MyRatingBarDemo.this.text.append("*** 当前值（Rating）："+ ratingBar.getRating() + "，增长步长："+ ratingBar.getStepSize() + "\n"); // 增加文本显示}} }

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