Android星级滑块

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activity_main.xml

<?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"    >        <ProgressBar         android:id="@+id/ProgressBar01"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:max="100"        android:progress="20"        style="@android:style/Widget.ProgressBar.Horizontal"        />        <RatingBar         android:id="@+id/RatingBar01"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:max="5"        android:rating="1"        />    </LinearLayout>

main_activity.java

package com.example.startbar;import android.os.Bundle;import android.app.Activity;import android.view.Menu;import android.widget.ProgressBar;import android.widget.RatingBar;public class MainActivity extends Activity {final static double MAX_STAR = 5;final static double MAX = 100;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);RatingBar rb = (RatingBar)findViewById(R.id.RatingBar01);rb.setOnRatingBarChangeListener(new RatingBar.OnRatingBarChangeListener() {@Overridepublic void onRatingChanged(RatingBar ratingBar, float rating, boolean fromUser) {// TODO Auto-generated method stubProgressBar pb = (ProgressBar)findViewById(R.id.ProgressBar01);RatingBar rb = (RatingBar)findViewById(R.id.RatingBar01);float rate = rb.getRating();pb.setProgress((int)(rate/MAX_STAR*MAX));}});}@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;}}

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