RatingBar

package com.example.ratingbar_e;import android.os.Bundle;import android.app.Activity;import android.view.Menu;import android.widget.RatingBar;import android.widget.TextView;public class MainActivity extends Activity {private RatingBar rb=null;private TextView tv=null;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);this.rb=(RatingBar)super.findViewById(R.id.rb1_info);this.tv=(TextView)super.findViewById(R.id.tv_info);rb.setOnRatingBarChangeListener(new RatingBar.OnRatingBarChangeListener() {@Overridepublic void onRatingChanged(RatingBar ratingBar, float rating,boolean fromUser) {// TODO Auto-generated method stub//rb.setRating( (float) 0.4);//rb.setNumStars(5);MainActivity.this.tv.append("当前RatingBar的stepsize为："+rb.getStepSize()+"Rating numbers:"+rb.getRating()+"\n");//rb.setVisibility(true);}});}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.activity_main, menu);return true;}}