Question

Android有默认星级评分栏。但在我的项目中有规模评级栏。怎么做那样的。请分享您的宝贵积分。有可能以同样的方式。下面我贴了样本图片。请给出你的建议。有没有可用的图书馆。

谢谢，

enter image description here

Answer 1

使用自定义评级栏。我发布的代码可能对您有所帮助。

   public class CustomRatingBar extends LinearLayout {

    @SuppressWarnings("unused")
    private Context context;
    private RatingHandler ratingHandler;
    private ImageView[] imgStar;

    private int emptyStarResourceId;
    private int starBgColor = 0;
    private int filledStarResourceId;
    private int halfFilledStarResourceId;
    private int starSize;
    private float starRating = 0;
    private boolean isEditable;

    @SuppressLint("NewApi")
    public CustomRatingBar(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        this.context = context;
        init(attrs);
    }

    public CustomRatingBar(Context context, AttributeSet attrs) {
        super(context, attrs);
        this.context = context;
        init(attrs);
    }

    public CustomRatingBar(Context context) {
        super(context);
        this.context = context;
        init(null);
    }

    private void init(AttributeSet attrs) {

        setGravity(Gravity.CENTER_VERTICAL);
        if (attrs == null) {
            filledStarResourceId = R.drawable.ijoomer_ratingstar_green;
            emptyStarResourceId = R.drawable.ijoomer_ratingstar_gray;
            halfFilledStarResourceId = R.drawable.ijoomer_ratingstarhalf_green;
            starRating = 0;
            starSize = convertSizeToDeviceDependent(10);
            isEditable = false;

        } else {
            String namespace = "http://schemas.android.com/apk/res/" + getContext().getPackageName();
            filledStarResourceId = attrs.getAttributeResourceValue(namespace, "star_filled", R.drawable.ijoomer_ratingstar_green);
            emptyStarResourceId = attrs.getAttributeResourceValue(namespace, "star_empty", R.drawable.ijoomer_ratingstar_gray);
            halfFilledStarResourceId = attrs.getAttributeResourceValue(namespace, "star_half", R.drawable.ijoomer_ratingstarhalf_green);
            starRating = attrs.getAttributeFloatValue(namespace, "star_rating", 0);
            starSize = attrs.getAttributeIntValue(namespace, "star_size", convertSizeToDeviceDependent(10));
            isEditable = attrs.getAttributeBooleanValue(namespace, "isEditable", false);
        }
        createView();
    }

    /**
     * This method used to create view.
     */
    private void createView() {

        View v = LayoutInflater.from(getContext()).inflate(R.layout.ijoomer_ratingbar, null);
        imgStar = new ImageView[5];
        imgStar[0] = (ImageView) v.findViewById(R.id.imgStar1);
        imgStar[1] = (ImageView) v.findViewById(R.id.imgStar2);
        imgStar[2] = (ImageView) v.findViewById(R.id.imgStar3);
        imgStar[3] = (ImageView) v.findViewById(R.id.imgStar4);
        imgStar[4] = (ImageView) v.findViewById(R.id.imgStar5);
        for (int i = 0; i < 5; i++) {
            imgStar[i].setImageResource(emptyStarResourceId);

            imgStar[i].getLayoutParams().width = starSize;
            imgStar[i].getLayoutParams().height = starSize;
            imgStar[i].setTag(i);

            imgStar[i].setOnClickListener(new OnClickListener() {

                @Override
                public void onClick(View v) {
                    if (isEditable) {
                        starRating = ((Integer) v.getTag()) + 1;
                        updateView();
                        if (getRatingHandler() != null)
                            ratingHandler.onRatingChangedListener(starRating);
                    }

                }
            });
        }
        v.setBackgroundColor(Color.TRANSPARENT);
        addView(v, new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT));
        updateView();

    }

    /**
     * This method used to update view.
     */
    private void updateView() {

        for (int i = 0; i < 5; i++) {
            imgStar[i].setImageResource(emptyStarResourceId);
            imgStar[i].getLayoutParams().width = starSize;
            imgStar[i].getLayoutParams().height = starSize;

        }
        if (starRating > 0 && starRating <= 5.0) {
            for (int i = 0; i < Math.ceil(starRating); i++) {
                if (i == Math.floor(starRating) && Math.ceil(starRating) > Math.floor(starRating)) {
                    imgStar[i].setImageResource(halfFilledStarResourceId);
                    if (starBgColor != 0) {
                         imgStar[i].setBackgroundColor(starBgColor);
                    }

                } else {
                    imgStar[i].setImageResource(filledStarResourceId);
                    if (starBgColor != 0) {
                         imgStar[i].setBackgroundColor(starBgColor);
                    }

                }
            }
        }

    }

    /**
     * This method used to get rating handler.
     * 
     * @return represented {@link RatingHandler}
     */
    public RatingHandler getRatingHandler() {
        return ratingHandler;
    }

    /**
     * This method used to get star bg color id.
     * 
     * @return represented {@link Integer}
     */
    public int getStarBgColor() {
        return starBgColor;
    }

    /**
     * This method used to set star bg color id.
     * 
     * @param starBgColor
     *            represented bg color id
     */
    public void setStarBgColor(int starBgColor) {
        this.starBgColor = starBgColor;
    }

    /**
     * This method used to set rating handler.
     * 
     * @param ratingHandler
     *            represented handler
     */
    public void setRatingHandler(RatingHandler ratingHandler) {
        this.ratingHandler = ratingHandler;
    }

    /**
     * This method used to get star size.
     * 
     * @return represented {@link Integer}
     */
    public int getStarSize() {
        return starSize;
    }

    /**
     * This method used to set star size.
     * 
     * @param starSize
     *            represented size
     */
    public void setStarSize(int starSize) {
        this.starSize = convertSizeToDeviceDependent(starSize);
        updateView();

    }

    /**
     * This method used to get star rating.
     * 
     * @return represented {@link Float}
     */
    public float getStarRating() {
        return starRating;
    }

    /**
     * This method used to set star rating.
     * 
     * @param starRating
     */
    public void setStarRating(float starRating) {
        this.starRating = starRating;
        updateView();
    }

    /**
     * This method used to check is editable.
     * 
     * @return represented
     */
    public boolean isEditable() {
        return isEditable;
    }

    /**
     * This method set is editable.
     * 
     * @param isEditable
     *            represented editable
     */
    public void setEditable(boolean isEditable) {
        this.isEditable = isEditable;
    }

    /**
     * This method used to get empty star resource id.
     * 
     * @return represented {@link Integer}
     */
    public int getEmptyStarResourceId() {
        return emptyStarResourceId;
    }

    /**
     * This method used to set empty star resource id.
     * 
     * @param emptyStarResourceId
     *            represented resource id
     */
    public void setEmptyStarResourceId(int emptyStarResourceId) {
        this.emptyStarResourceId = emptyStarResourceId;
    }

    /**
     * This method used to get filled star resource id.
     * 
     * @return represented {@link Integer}
     */
    public int getFilledStarResourceId() {
        return filledStarResourceId;
    }

    /**
     * This method used to set filled star resource id.
     * 
     * @param filledStarResourceId
     *            represented resource id
     */
    public void setFilledStarResourceId(int filledStarResourceId) {
        this.filledStarResourceId = filledStarResourceId;
    }

    /**
     * This method used to get half start resource id.
     * 
     * @return represented {@link Integer}
     */
    public int getHalfFilledStarResourceId() {
        return halfFilledStarResourceId;
    }

    /**
     * This method used to set half resource id.
     * 
     * @param halfFilledStarResourceId
     *            represented resource id
     */
    public void setHalfFilledStarResourceId(int halfFilledStarResourceId) {
        this.halfFilledStarResourceId = halfFilledStarResourceId;
    }

    /**
     * This method used to convert size to device dependent.
     * 
     * @param value
     *            represented size
     * @return represented {@link Integer}
     */
    public int convertSizeToDeviceDependent(int value) {
        DisplayMetrics dm = new DisplayMetrics();
        ((Activity) getContext()).getWindowManager().getDefaultDisplay().getMetrics(dm);
        return ((dm.densityDpi * value) / 160);
    }

    /**
     * Inner interface
     * 
     * @author tasol
     * 
     */
    public interface RatingHandler {
        void onRatingChangedListener(float rating);

    }

}

如何在android中制作规模评级栏？

1 个答案: