Android开发之自定义星星评分控件RatingBar用法示例

public class MainActivity extends Activity {
  RatingBar ratingBar ;RatingBar ratingBar02 ;
  TextView textView ;
  ImageView imageView ;
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    ratingBar = (RatingBar) findViewById(R.id.rating);
    ratingBar02 = (RatingBar) findViewById(R.id.rating02);
    textView = (TextView) findViewById(R.id.textview);
    imageView = (ImageView) findViewById(R.id.image);
    ratingBar.setOnRatingBarChangeListener(new RatingBar.OnRatingBarChangeListener() {
      @Override
      public void onRatingChanged(RatingBar ratingBar, float rating, boolean fromUser) {
        textView.setText(String.valueOf((int) (rating)));
      }
    });
    ratingBar02.setOnRatingBarChangeListener(new RatingBar.OnRatingBarChangeListener() {
      @Override
      public void onRatingChanged(RatingBar ratingBar, float rating, boolean fromUser) {
        imageView.setAlpha((int)(rating*255/5));
      }
    });
  }
}

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