RatingBar使用完整示例

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MainActivity如下:

package cc.testratingbar;import android.os.Bundle;import android.widget.RatingBar;import android.widget.RatingBar.OnRatingBarChangeListener;import android.app.Activity;/** * Demo描述: * RatingBar使用完整示例 * 如果要自定义RatingBar更改它的外观,只需要在布局文件中修改其style即可 *  * 参考资料: * 1 http://www.cnblogs.com/over140/archive/2010/11/18/1880455.html * 2 http://www.cnblogs.com/lipeil/archive/2012/07/13/2590457.html * 3 http://my.oschina.net/amigos/blog/60060 *   Thank you very much * */public class MainActivity extends Activity {    private RatingBar mRatingBar;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);init();}private void init(){mRatingBar=(RatingBar) findViewById(R.id.ratingBar);//为RatingBar设置监听mRatingBar.setOnRatingBarChangeListener(new RatingBarChangeListenerImpl());//得到RatingBar的最大等级int max=mRatingBar.getMax();//得到RatingBar现在的等级float currentRating=mRatingBar.getRating();System.out.println("max="+max+",currentRating"+currentRating);}//注意onRatingChanged方法中的最后一个参数boolean fromUser://若是由用户触摸手势或方向键轨迹球移动触发RatingBar的等级改变,返回true//若是由编程触发RatingBar的等级改变,返回falseprivate class RatingBarChangeListenerImpl implements OnRatingBarChangeListener{@Overridepublic void onRatingChanged(RatingBar ratingBar, float rating, boolean fromUser) {System.out.println("现在的等级为 rating="+rating+",是否是用户触发 fromUser="+fromUser);}}}

main.xml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" >    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_centerHorizontal="true"        android:text="RatingBar使用完整示例" />    <RatingBar        android:id="@+id/ratingBar"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_centerInParent="true"        android:max="5"        android:rating="2" /></RelativeLayout>

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