[add] 自定义ratingbar
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liujing
@@ -0,0 +1,298 @@
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package com.mogo.module.common.view;
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import android.content.Context;
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import android.content.res.TypedArray;
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import android.graphics.drawable.Drawable;
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import android.util.AttributeSet;
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import android.view.View;
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import android.widget.ImageView;
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import android.widget.LinearLayout;
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import androidx.annotation.Nullable;
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import androidx.core.content.ContextCompat;
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import com.mogo.module.common.R;
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import java.math.BigDecimal;
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public class CustomRatingBar extends LinearLayout {
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private Context mContext;
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/*
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是否可点击
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* */
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private boolean mClickable;
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/*
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* 单元总数(心形/星星)
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* */
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private int elementCount;
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/*
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* 单元点击事件
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* */
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private OnRatingChangeListener mOnRatingBarChangeListener;
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/*
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* 每个单元的大小
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* */
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private float elementWidth;
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private float elementHeight;
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public float getElementWidth() {
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return elementWidth;
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}
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public void setElementWidth(float elementWidth) {
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this.elementWidth = elementWidth;
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}
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public float getElementHeight() {
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return elementHeight;
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}
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public void setElementHeight(float elementHeight) {
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this.elementHeight = elementHeight;
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}
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/*
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* 每个单元间的距离
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* */
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private float elementPadding;
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/*
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*单元的显示数量,支持小数点
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* */
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private float elementStep;
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/*
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* 空白的默认单元图片
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* */
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private Drawable elementEmptyDrawable;
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/*
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* 选中后的单元图片
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* */
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private Drawable elementFillDrawable;
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/*
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* 半颗单元图片
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* */
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private Drawable elementHarfDrawable;
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/*
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* 每次点击单元所增加的量是半个还是整个
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* */
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private StepSize stepSize;
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@Override
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public boolean isClickable() {
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return mClickable;
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}
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@Override
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public void setClickable(boolean clickable) {
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mClickable = clickable;
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}
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public int getElementCount() {
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return elementCount;
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}
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public void setElementCount(int elementCount) {
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this.elementCount = elementCount;
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}
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public OnRatingChangeListener getOnRatingBarChangeListener() {
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return mOnRatingBarChangeListener;
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}
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public void setOnRatingChangeListener(OnRatingChangeListener onRatingBarChangeListener) {
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mOnRatingBarChangeListener = onRatingBarChangeListener;
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}
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public float getElementPadding() {
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return elementPadding;
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}
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public void setElementPadding(float elementPadding) {
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this.elementPadding = elementPadding;
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}
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public float getElementStep() {
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return elementStep;
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}
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public void setElementStep(float elementStep) {
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this.elementStep = elementStep;
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}
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public Drawable getElementEmptyDrawable() {
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return elementEmptyDrawable;
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}
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public void setElementEmptyDrawable(Drawable elementEmptyDrawable) {
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this.elementEmptyDrawable = elementEmptyDrawable;
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}
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public Drawable getElementFillDrawable() {
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return elementFillDrawable;
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}
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public void setElementFillDrawable(Drawable elementFillDrawable) {
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this.elementFillDrawable = elementFillDrawable;
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}
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public Drawable getElementHarfDrawable() {
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return elementHarfDrawable;
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}
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public void setElementHarfDrawable(Drawable elementHarfDrawable) {
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this.elementHarfDrawable = elementHarfDrawable;
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}
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public void setStepSize(StepSize stepSize) {
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this.stepSize = stepSize;
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}
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public CustomRatingBar(Context context, @Nullable AttributeSet attrs) {
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super(context, attrs);
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mContext = context;
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setOrientation(LinearLayout.HORIZONTAL);
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TypedArray mTypedArray = context.obtainStyledAttributes(attrs, R.styleable.CustomRatingBar);
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elementWidth = mTypedArray.getDimension(R.styleable.CustomRatingBar_elenmentWidth,
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context.getResources().getDimension(R.dimen.heart_ratingbar_width));
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elementHeight = mTypedArray.getDimension(R.styleable.CustomRatingBar_elenmentHeight,
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context.getResources().getDimension(R.dimen.heart_ratingbar_height));
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elementPadding = mTypedArray.getDimension(R.styleable.CustomRatingBar_elenmentPadding, 10);
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elementStep = mTypedArray.getFloat(R.styleable.CustomRatingBar_elenmentStep, 1.0f);
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stepSize = StepSize.fromStep(mTypedArray.getInt(R.styleable.CustomRatingBar_stepSize, 1));
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elementCount = mTypedArray.getInteger(R.styleable.CustomRatingBar_elenmentCount, 5);
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stepSize = StepSize.Half;
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Drawable drawable_empty_default = ContextCompat.getDrawable(context, R.drawable.icon_heart_unchoose);
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Drawable drawable_harf_default = ContextCompat.getDrawable(context, R.drawable.icon_heart_second);
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Drawable drawable_fill_default = ContextCompat.getDrawable(context, R.drawable.icon_heart_choose);
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Drawable drawable_empty = mTypedArray.getDrawable(R.styleable.CustomRatingBar_elenmentEmpty);
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Drawable drawable_harf = mTypedArray.getDrawable(R.styleable.CustomRatingBar_elenmentHarf);
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Drawable drawable_fill = mTypedArray.getDrawable(R.styleable.CustomRatingBar_elenmentFill);
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elementEmptyDrawable = drawable_empty != null ? drawable_empty : drawable_empty_default;
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elementFillDrawable = drawable_harf != null ? drawable_harf : drawable_fill_default;
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elementHarfDrawable = drawable_fill != null ? drawable_fill : drawable_harf_default;
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mClickable = mTypedArray.getBoolean(R.styleable.CustomRatingBar_clickable, false);
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mTypedArray.recycle();
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for (int i = 0; i < elementCount; ++i) {
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final ImageView imageView = getElenmentImageView();
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imageView.setImageDrawable(elementEmptyDrawable);
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imageView.setOnClickListener(
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new OnClickListener() {
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@Override
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public void onClick(View v) {
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if (mClickable) {
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//浮点数的整数部分
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int fint = (int) elementStep;
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BigDecimal b1 = new BigDecimal(Float.toString(elementStep));
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BigDecimal b2 = new BigDecimal(Integer.toString(fint));
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//浮点数的小数部分
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float fPoint = b1.subtract(b2).floatValue();
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if (fPoint == 0) {
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fint -= 1;
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}
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if (indexOfChild(v) > fint) {
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setRating(indexOfChild(v) + 1);
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} else if (indexOfChild(v) == fint) {
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if (stepSize == StepSize.Full) {//如果是满星 就不考虑半颗星了
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return;
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}
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//点击之后默认每次先增加一颗星，再次点击变为半颗星
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if (imageView.getDrawable().getCurrent().getConstantState().
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equals(elementHarfDrawable.getConstantState())) {
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setRating(indexOfChild(v) + 1);
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} else {
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setRating(indexOfChild(v) + 0.5f);
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}
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} else {
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setRating(indexOfChild(v) + 1f);
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}
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}
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}
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}
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);
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addView(imageView);
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}
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setRating(elementStep);
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}
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private ImageView getElenmentImageView() {
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ImageView imageView = new ImageView(getContext());
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LayoutParams layout = new LayoutParams(
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Math.round(mContext.getResources().getDimension(R.dimen.heart_ratingbar_width)),
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Math.round(mContext.getResources().getDimension(R.dimen.heart_ratingbar_width)));//设置每个单元格在线性布局的大小
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layout.setMargins(0, 0, Math.round(elementPadding), 0);//设置每颗星星在线性布局的间距
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imageView.setLayoutParams(layout);
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imageView.setAdjustViewBounds(true);
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imageView.setScaleType(ImageView.ScaleType.FIT_XY);
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imageView.setImageDrawable(elementEmptyDrawable);
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imageView.setMinimumWidth((int) elementWidth);
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imageView.setMaxWidth((int) elementWidth);
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imageView.setMinimumHeight((int) elementHeight);
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imageView.setMaxHeight((int) elementHeight);
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return imageView;
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}
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public void setRating(float rating) {
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if (rating > elementCount)
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rating = elementCount;
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if (mOnRatingBarChangeListener != null) {
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mOnRatingBarChangeListener.onRatingChange(rating);
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}
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this.elementStep = rating;
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//浮点数的整数部分
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int fint = (int) rating;
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BigDecimal b1 = new BigDecimal(Float.toString(rating));
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BigDecimal b2 = new BigDecimal(Integer.toString(fint));
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//浮点数的小数部分
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float fPoint = b1.subtract(b2).floatValue();
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//设置选中的单元
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for (int i = 0; i < fint; ++i) {
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((ImageView) getChildAt(i)).setImageDrawable(elementFillDrawable);
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}
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//设置没有选中的单元
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for (int i = fint; i < elementCount; i++) {
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((ImageView) getChildAt(i)).setImageDrawable(elementEmptyDrawable);
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}
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//小数点默认增加半个
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if (fPoint > 0) {
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((ImageView) getChildAt(fint)).setImageDrawable(elementHarfDrawable);
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}
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}
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public interface OnRatingChangeListener {
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void onRatingChange(float ratingCount);
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}
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/**
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* 每次增加的方式整颗还是半颗，枚举类型
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* 类似于View.GONE
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*/
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public enum StepSize {
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Half(0), Full(1);
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int step;
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StepSize(int step) {
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this.step = step;
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}
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public static StepSize fromStep(int step) {
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for (StepSize f : values()) {
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if (f.step == step) {
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return f;
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}
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}
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throw new IllegalArgumentException();
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}
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}
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}
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