Android 有默认的星级评分栏。但在我的项目中有规模评级栏。怎么做。请分享您的宝贵意见。有没有可能用同样的方法。下面我粘贴了示例图像。请给出你的建议。有没有可用的图书馆。
谢谢，
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1 回答
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使用自定义评分栏。我正在发布可能对您有帮助的代码。
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);
}
}
于 2013-09-20T12:43:45.263 回答