Question

我正在开发一个带有碎片的项目，我有4个评级栏（每个都有四颗星），用户只能使用10个＆＃34;星级＆＃34;从所有评级栏中合并。

我正在尝试将这些值加起来，但即使这样也行不通。我希望能够将所有值相加，然后限制在所有评级中可以设置的值。

FragmentRatings.java：

public class FramentRatings extends Fragment{
    RatingBar rbStrength, rbIntellect, rbWisdom, rbDexterity;
    TextView tvPointSpent;
    float pointsS, pointsI, pointsW, pointsD, total;

    private SharedPreferences prefs;

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_ratings, container, false);

        rbStrength = (RatingBar)view.findViewById(R.id.strengthRating);
        rbIntellect = (RatingBar)view.findViewById(R.id.intellectRating);
        rbWisdom = (RatingBar)view.findViewById(R.id.wisdomRating);
        rbDexterity = (RatingBar)view.findViewById(R.id.dexterityRating);


        tvPointSpent = (TextView)view.findViewById(R.id.tvPointsSpend);

        rbStrength.setOnRatingBarChangeListener(new RatingBar.OnRatingBarChangeListener() {
            @Override
            public void onRatingChanged(RatingBar ratingBar, float rating, boolean fromUser) {
                tvPointSpent.setText(""+rbStrength.getRating());
                pointsS = rbStrength.getRating();
            }
        });

        rbIntellect.setOnRatingBarChangeListener(new RatingBar.OnRatingBarChangeListener() {
            @Override
            public void onRatingChanged(RatingBar ratingBar, float rating, boolean fromUser) {
                //tvPointSpent.setText(""+rbIntellect.getRating());
                pointsI = rbIntellect.getRating();
            }
        });

        rbWisdom.setOnRatingBarChangeListener(new RatingBar.OnRatingBarChangeListener() {
            @Override
            public void onRatingChanged(RatingBar ratingBar, float rating, boolean fromUser) {
                //tvPointSpent.setText(""+rbStrength.getRating());
                pointsW = rbWisdom.getRating();
            }
        });

        rbDexterity.setOnRatingBarChangeListener(new RatingBar.OnRatingBarChangeListener() {
            @Override
            public void onRatingChanged(RatingBar ratingBar, float rating, boolean fromUser) {
                //tvPointSpent.setText(""+rbStrength.getRating());
                pointsD = rbDexterity.getRating();
            }
        });

        total = pointsD + pointsI + pointsS + pointsW;

        tvPointSpent.setText(""+pointsS);

        return view;
    }
}

fragment_ratings.xml：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">
    <TextView
        android:id="@+id/tvStrength"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignTop="@+id/strengthRating"
        android:layout_marginEnd="59dp"
        android:layout_marginRight="59dp"
        android:layout_toLeftOf="@+id/strengthRating"
        android:layout_toStartOf="@+id/strengthRating"
        android:text="Strength:"
        android:textSize="30sp" />

    <TextView
        android:id="@+id/tvIntellect"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/tvStrength"
        android:layout_alignStart="@+id/tvStrength"
        android:layout_alignTop="@+id/intellectRating"
        android:text="Intellect:"
        android:textSize="30sp" />

    <TextView
        android:id="@+id/tvWisdom"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/tvIntellect"
        android:layout_alignStart="@+id/tvIntellect"
        android:layout_alignTop="@+id/wisdomRating"
        android:text="Wisdom:"
        android:textSize="30sp" />

    <RatingBar
        android:id="@+id/strengthRating"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="141dp"
        android:layout_marginRight="141dp"
        android:layout_marginTop="61dp"
        android:numStars="4"
        android:rating="0"
        android:stepSize="1.0"
        android:layout_alignParentTop="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true" />

    <RatingBar
        android:id="@+id/intellectRating"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/strengthRating"
        android:layout_alignStart="@+id/strengthRating"
        android:layout_below="@+id/strengthRating"
        android:layout_marginTop="58dp"
        android:numStars="4"
        android:rating="0"
        android:stepSize="1.0" />

    <RatingBar
        android:id="@+id/wisdomRating"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/intellectRating"
        android:layout_alignStart="@+id/intellectRating"
        android:layout_below="@+id/intellectRating"
        android:layout_marginTop="61dp"
        android:numStars="4"
        android:rating="0"
        android:stepSize="1.0" />

    <RatingBar
        android:id="@+id/dexterityRating"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignEnd="@+id/wisdomRating"
        android:layout_alignRight="@+id/wisdomRating"
        android:layout_below="@+id/wisdomRating"
        android:layout_marginTop="66dp"
        android:numStars="4"
        android:rating="0"
        android:stepSize="1.0" />

    <TextView
        android:id="@+id/tvDexterity"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/tvIntellect"
        android:layout_alignStart="@+id/tvIntellect"
        android:layout_alignTop="@+id/dexterityRating"
        android:text="Dexterity:"
        android:textSize="30sp" />

    <TextView
        android:id="@+id/tvPoints"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/tvDexterity"
        android:layout_alignStart="@+id/tvDexterity"
        android:layout_below="@+id/dexterityRating"
        android:layout_marginTop="62dp"
        android:text="Points left to spend: "
        android:textSize="30sp" />

    <TextView
        android:id="@+id/tvPointsSpend"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignTop="@+id/tvPoints"
        android:layout_marginLeft="30dp"
        android:layout_marginStart="30dp"
        android:layout_toEndOf="@+id/tvPoints"
        android:layout_toRightOf="@+id/tvPoints"
        android:text="10"
        android:textSize="30sp" />


</RelativeLayout>

Picture of the rating bars

Answer 1

可能有逻辑错误但不应该行：

tvPointSpent.setText（ “” + pointsS）;

是：

tvPointSpent.setText（将String.valueOf（总））;

Answer 2

我可能已经很晚了，但是

我建议的一个快速修复方法是pointsS = ratingBar.getRating(); 或pointsS = rating;并像这样休息一下，因为函数onRatingChanged(...)中的这些参数可获取更改后的值和最终值。

获得多个评级栏的值，并设置可以使用的星数限制

2 个答案: