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;
@Override
protected 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false
private class RatingBarChangeListenerImpl implements OnRatingBarChangeListener{
@Override
public 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>
