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 onCreate(Bundle savedInstanceState)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 onRatingChanged(RatingBar ratingBar, float rating, boolean fromTouch)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