1. RatingBarDemo.javajava
public class RatingBarDemo extends AppCompatActivity { private RatingBar ratingBarA = null; private TextView textView = null; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_rating_bar_demo); this.ratingBarA = (RatingBar)findViewById(R.id.ratingBar1); //取得組件 this.textView = (TextView)super.findViewById(R.id.text); this.ratingBarA.setOnRatingBarChangeListener(new OnRatingBarChangeListenerImpl()); //設置監聽 } private class OnRatingBarChangeListenerImpl implements RatingBar.OnRatingBarChangeListener { @Override public void onRatingChanged(RatingBar ratingBar, float rating, boolean fromUser) { RatingBarDemo.this.textView.append("**當前值:"+ratingBar.getRating()+ ",增加步長:"+ratingBar.getStepSize()+"\n"); //增長文本 } } }
2. activity_rating_bar_demo.xmlandroid
<!--有5星評分,每次評分步長0.5,用戶能夠操做--> <RatingBar android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/ratingBarB" android:numStars="5" android:stepSize="0.5" android:isIndicator="false" android:layout_centerHorizontal="true" /> <!--默認3顆星--> <RatingBar android:layout_width="wrap_content" android:layout_height="wrap_content" android:rating="3" android:id="@+id/ratingBar1" android:layout_alignParentTop="true" android:layout_alignLeft="@+id/ratingBarB" android:layout_alignStart="@+id/ratingBarB" android:layout_marginTop="63dp" android:numStars="5" android:stepSize="0.5" /> <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:id="@+id/text" android:layout_below="@+id/ratingBar1" android:layout_alignParentLeft="true" android:layout_alignParentStart="true" android:layout_marginTop="52dp" />