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我制作了一个 Android Rating Bar 程序来接受用户评分，计算总评分并将其显示在指标评分栏中。

现在我想在我的 Rating Bar 程序中添加另外两个功能：

  1. 我想在 ListView 中使用我现有的评分栏
  2. 其次，希望在 MyRatings 等其他活动中显示高到低评分项目

我的 Java 代码：-

public class InteractiveRatingBarActivity extends Activity implements
OnRatingBarChangeListener {
RatingBar getRatingBar;
RatingBar setRatingBar;
TextView countText;
int count;
float curRate;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    findViewsById();

    setRatingBar.setRating(curRate);
    getRatingBar.setOnRatingBarChangeListener(this);
}  

private void findViewsById() {
    getRatingBar = (RatingBar) findViewById(R.id.getRating);
    setRatingBar = (RatingBar) findViewById(R.id.setRating);
    countText = (TextView) findViewById(R.id.countText);
}

public void onRatingChanged(RatingBar rateBar, float rating,
        boolean fromUser) {
    DecimalFormat decimalFormat = new DecimalFormat("#.#");
    curRate = Float.valueOf(decimalFormat.format((curRate * count + rating)
            / ++count));
    Toast.makeText(InteractiveRatingBarActivity.this,
            "New Rating: " + curRate, Toast.LENGTH_SHORT).show();
    setRatingBar.setRating(curRate);
    countText.setText(count + " Ratings");
}
}

主.xml：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<RatingBar
    android:id="@+id/getRating"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:numStars="5"
    android:stepSize="1.0" />

<RatingBar
    android:id="@+id/setRating"
    style="?android:attr/ratingBarStyleSmall"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@id/getRating"
    android:isIndicator="true"
    android:numStars="5"
    android:stepSize="0.1" />

<TextView
    android:id="@+id/countText"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_below="@+id/getRating"
    android:layout_toRightOf="@+id/setRating"
    android:paddingLeft="10dp" />
</RelativeLayout>
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