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      1 /*
      2  * Copyright (C) 2007 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.example.android.apis.view;
     18 
     19 import android.app.Activity;
     20 import android.os.Bundle;
     21 import android.widget.RatingBar;
     22 import android.widget.TextView;
     23 
     24 import com.example.android.apis.R;
     25 
     26 /**
     27  * Demonstrates how to use a rating bar
     28  */
     29 public class RatingBar1 extends Activity implements RatingBar.OnRatingBarChangeListener {
     30     RatingBar mSmallRatingBar;
     31     RatingBar mIndicatorRatingBar;
     32     TextView mRatingText;
     33 
     34     @Override
     35     protected void onCreate(Bundle savedInstanceState) {
     36         super.onCreate(savedInstanceState);
     37 
     38         setContentView(R.layout.ratingbar_1);
     39 
     40         mRatingText = (TextView) findViewById(R.id.rating);
     41 
     42         // We copy the most recently changed rating on to these indicator-only
     43         // rating bars
     44         mIndicatorRatingBar = (RatingBar) findViewById(R.id.indicator_ratingbar);
     45         mSmallRatingBar = (RatingBar) findViewById(R.id.small_ratingbar);
     46 
     47         // The different rating bars in the layout. Assign the listener to us.
     48         ((RatingBar)findViewById(R.id.ratingbar1)).setOnRatingBarChangeListener(this);
     49         ((RatingBar)findViewById(R.id.ratingbar2)).setOnRatingBarChangeListener(this);
     50     }
     51 
     52     public void onRatingChanged(RatingBar ratingBar, float rating, boolean fromTouch) {
     53         final int numStars = ratingBar.getNumStars();
     54         mRatingText.setText(
     55                 getString(R.string.ratingbar_rating) + " " + rating + "/" + numStars);
     56 
     57         // Since this rating bar is updated to reflect any of the other rating
     58         // bars, we should update it to the current values.
     59         if (mIndicatorRatingBar.getNumStars() != numStars) {
     60             mIndicatorRatingBar.setNumStars(numStars);
     61             mSmallRatingBar.setNumStars(numStars);
     62         }
     63         if (mIndicatorRatingBar.getRating() != rating) {
     64             mIndicatorRatingBar.setRating(rating);
     65             mSmallRatingBar.setRating(rating);
     66         }
     67         final float ratingBarStepSize = ratingBar.getStepSize();
     68         if (mIndicatorRatingBar.getStepSize() != ratingBarStepSize) {
     69             mIndicatorRatingBar.setStepSize(ratingBarStepSize);
     70             mSmallRatingBar.setStepSize(ratingBarStepSize);
     71         }
     72     }
     73 
     74 }
     75