首页 / 移动开发 / Android / android之RatingBar控件用法详解

package com.example.mars_2500_ratingbar;import android.support.v7.app.ActionBarActivity;import android.support.v7.app.ActionBar;import android.support.v4.app.Fragment;import android.app.Activity;import android.os.Bundle;import android.util.Log;import android.view.LayoutInflater;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.view.View.OnClickListener;import android.view.ViewGroup;import android.widget.Button;import android.widget.RatingBar;import android.widget.RatingBar.OnRatingBarChangeListener;import android.os.Build;public class MainActivity extends Activity{RatingBar ratingBar;Button button1;public static String TAG="MainActivity";@Overrideprotected void onCreate（Bundle savedInstanceState）{super.onCreate（savedInstanceState）;setContentView（R.layout.activity_main）;ratingBar=（RatingBar）findViewById（R.id.ratingBar1）;ratingBar.setOnRatingBarChangeListener（new RatingBarChangeListener（））;button1=（Button）findViewById（R.id.buttn1）;button1.setOnClickListener（new ClickListener（））;}class RatingBarChangeListener implements OnRatingBarChangeListener{@Overridepublic void onRatingChanged（RatingBar ratingBar, float rating,boolean fromUser）{Log.i（TAG, "当前分数="+rating）;System.out.println（"当前分数="+rating）;}}class ClickListener implements OnClickListener{@Overridepublic void onClick（View v）{//在当前加0.5分ratingBar.setRating（ratingBar.getRating（）+0.5f）;}}@Overridepublic boolean onCreateOptionsMenu（Menu menu）{// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater（）.inflate（R.menu.main, menu）;return true;}}

<?xml version="1.0" encoding="UTF-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" > <RatingBar android:id="@+id/ratingBar1"android:layout_width="wrap_content"android:layout_height="wrap_content"android:numStars="5"android:stepSize="0.5"/><Button android:id="@+id/buttn1"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_below="@id/ratingBar1"android:text="评分" /> </LinearLayout>