2.4.6 星级评分条

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:id="@+id/layoutMain"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical"

    tools:context=".MainActivity" >



    <ImageView

        android:id="@+id/imageView1"

        android:layout_width="match_parent"

        android:layout_height="300px"

        android:scaleType="fitCenter"

        android:src="@drawable/a1" />



    <RatingBar

        android:id="@+id/ratingBar1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_gravity="center_horizontal"

        android:max="255"

        android:numStars="5"

        android:progress="255" />



</LinearLayout>

package com.moon.hello2;



import java.util.Calendar;



import android.R.anim;

import android.R.integer;

import android.app.Activity;

import android.os.Bundle;

import android.os.Handler;

import android.os.Message;

import android.view.Menu;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.ArrayAdapter;

import android.widget.AutoCompleteTextView;

import android.widget.Button;

import android.widget.DatePicker;

import android.widget.ImageView;

import android.widget.ProgressBar;

import android.widget.RatingBar;

import android.widget.RatingBar.OnRatingBarChangeListener;

import android.widget.SeekBar;

import android.widget.DatePicker.OnDateChangedListener;

import android.widget.SeekBar.OnSeekBarChangeListener;

import android.widget.TextView;

import android.widget.TimePicker;

import android.widget.TimePicker.OnTimeChangedListener;



public class MainActivity extends Activity {

    private int status = 0;



    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        this.setContentView(R.layout.activity_main);

        final ImageView imageView = (ImageView)findViewById(R.id.imageView1);

        RatingBar ratingBar = (RatingBar)findViewById(R.id.ratingBar1);

        ratingBar.setOnRatingBarChangeListener(new OnRatingBarChangeListener() {

            

            @Override

            public void onRatingChanged(RatingBar arg0, float rating, boolean arg2) {

                // TODO Auto-generated method stub

                imageView.setAlpha(rating*5/255);

            }

        });

    }



    @Override

    public boolean onCreateOptionsMenu(Menu menu) {

        getMenuInflater().inflate(R.menu.main, menu);

        return true;

    }



}