yusheng-android/BaseModule/src/main/java/com/xscm/moduleutil/adapter/GiftTwoAdapter.java

package com.xscm.moduleutil.adapter;

import android.annotation.SuppressLint;
import android.content.Context;
import android.text.Spannable;
import android.text.SpannableStringBuilder;
import android.text.style.ForegroundColorSpan;
import android.view.GestureDetector;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import androidx.constraintlayout.widget.ConstraintLayout;


import com.xscm.moduleutil.R;
import com.xscm.moduleutil.bean.RoonGiftModel;
import com.xscm.moduleutil.color.ThemeableDrawableUtils;
import com.xscm.moduleutil.event.RoomGiftClickEvent;
import com.xscm.moduleutil.utils.ColorManager;
import com.xscm.moduleutil.utils.ImageUtils;

import org.greenrobot.eventbus.EventBus;

import java.lang.ref.WeakReference;
import java.util.List;

public class GiftTwoAdapter extends BaseAdapter {
    private final List<RoonGiftModel> mDatas;
    private final LayoutInflater inflater;
    private final Context mContext;
    private final MyGestureDetector gestureDetector;
    private final String type;
    /**
     * 页数下标,从0开始(当前是第几页)
     */
    private final int curIndex;
    /**
     * 每一页显示的个数
     */
    private final int pageSize = 100;

    public GiftTwoAdapter(Context context, List<RoonGiftModel> mDatas, int curIndex, String type) {
        inflater = LayoutInflater.from(context);
        this.mDatas = mDatas;
        this.curIndex = curIndex;
        this.mContext = context;
        this.type = type;
        this.gestureDetector = new MyGestureDetector(mContext);
    }

    /**
     * 先判断数据集的大小是否足够显示满本页？mDatas.size() > (curIndex+1)*pageSize,
     * 如果够，则直接返回每一页显示的最大条目个数pageSize,
     * 如果不够，则有几项返回几,(mDatas.size() - curIndex * pageSize);(也就是最后一页的时候就显示剩余item)
     */
    @Override
    public int getCount() {
        return mDatas.size() > (curIndex + 1) * pageSize ? pageSize : (mDatas.size() - curIndex * pageSize);
    }

    @Override
    public RoonGiftModel getItem(int position) {
        return mDatas.get(position + curIndex * pageSize);
    }

    @Override
    public long getItemId(int position) {
        return position + (long) curIndex * pageSize;
    }

    private static class MyGestureDetector extends GestureDetector {
        private static WeakReference<GiftTwoAdapter> sAdapter = new WeakReference<>(null);
        private static RoonGiftModel sGiftModel;

        public void setGiftModel(GiftTwoAdapter adapter, RoonGiftModel gift) {
            sAdapter = new WeakReference<>(adapter);
            sGiftModel = gift;
        }

        private static final SimpleOnGestureListener sSimpleOnGestureListener = new SimpleOnGestureListener() {
            @Override
            public boolean onSingleTapConfirmed(MotionEvent e) {
              EventBus.getDefault().post(new RoomGiftClickEvent(sAdapter.get(), sGiftModel, 1));
                return true;
            }

            @Override
            public boolean onDoubleTap(MotionEvent e) {
                EventBus.getDefault().post(new RoomGiftClickEvent(sAdapter.get(), sGiftModel, 2));
                return true;
            }
        };

        public MyGestureDetector(Context context) {
            super(context, sSimpleOnGestureListener);
            setOnDoubleTapListener(sSimpleOnGestureListener);
        }
    }

    @Override
    @SuppressLint({"SetTextI18n", "ClickableViewAccessibility"})
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder viewHolder;
        if (convertView == null) {
            convertView = inflater.inflate(R.layout.room_gv_gift_item, parent, false);
            viewHolder = new ViewHolder();
            viewHolder.tv_gift_name = (TextView) convertView.findViewById(R.id.tv_gift_name);
            viewHolder.tv_gift_price = (TextView) convertView.findViewById(R.id.tv_gift_price);
            viewHolder.iv_gift_pic = (ImageView) convertView.findViewById(R.id.iv_gift_pic);
            viewHolder.item_layout = (ConstraintLayout) convertView.findViewById(R.id.cl_gift);
            viewHolder.ivDownOn = (ImageView) convertView.findViewById(R.id.iv_down_on);
            viewHolder.cl_iv_down_on = (ConstraintLayout) convertView.findViewById(R.id.cl_iv_down_on);
            viewHolder.tv_gift_num = convertView.findViewById(R.id.tv_number);
//            viewHolder.tv_gift_change_love_values = convertView.findViewById(R.id.tv_gift_change_love_values);
            viewHolder.item_layout.setOnTouchListener((v, event) -> {
                gestureDetector.setGiftModel(GiftTwoAdapter.this, (RoonGiftModel) v.getTag(R.id.id_gift_tag));
                gestureDetector.onTouchEvent(event);

                return true;
            });
            convertView.setTag(viewHolder);
        } else {
            viewHolder = (ViewHolder) convertView.getTag();
        }
        /*
         * 在给View绑定显示的数据时，计算正确的position = position + curIndex * pageSize，
         */
//        viewHolder.tv_gift_num.setVisibility(type.equals("1") ? View.VISIBLE : View.INVISIBLE);
//        viewHolder.tv_gift_change_love_values.setVisibility(View.GONE);
        float[] corners = {0f, 4f, 0f, 4f};
        ThemeableDrawableUtils.setThemeableRoundedBackground( viewHolder.tv_gift_num, ColorManager.getInstance().getPrimaryColorInt(), corners);
        viewHolder.tv_gift_num.setTextColor(ColorManager.getInstance().getButtonColorInt());
        RoonGiftModel giftModel = getItem(position);
        //设置礼物名字
        viewHolder.tv_gift_name.setText(giftModel.getGift_name());
        //设置礼物价格
        String surplusTxt = giftModel.getGift_price();
        SpannableStringBuilder stringBuilder = new SpannableStringBuilder(surplusTxt);
        //ForegroundColorSpan 为文字前景色，BackgroundColorSpan为文字背景色
        ForegroundColorSpan redSpan = new ForegroundColorSpan(mContext.getResources().getColor(R.color.color_FFA9A9A9));
        stringBuilder.setSpan(redSpan, surplusTxt.length(), surplusTxt.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);//修改最后两个字体的颜色
        viewHolder.tv_gift_price.setText(stringBuilder);
//        viewHolder.item_layout.setTag(R.id.id_gift_tag, giftModel);

        //加载礼物图片
        ImageUtils.loadImageView(giftModel.getBase_image(), viewHolder.iv_gift_pic);
        //设置选中后的样式

        if (giftModel.isChecked()) {//被选中
            viewHolder.cl_iv_down_on.setBackgroundResource(R.mipmap.room_gift_bjx);
            viewHolder.ivDownOn.setVisibility(View.GONE);
        } else {
            viewHolder.ivDownOn.setVisibility(View.GONE);
            viewHolder.cl_iv_down_on.setBackgroundResource(0);
        }
        if (giftModel.getNum().isEmpty()){
            viewHolder.tv_gift_num.setVisibility(View.GONE);
        }
        viewHolder.tv_gift_num.setText(String.format("x%s", giftModel.getNum()));


        //设置
//        //设置礼物心动值
//        if (giftModel.getCardiac().equals("0")) {
//            viewHolder.tv_gift_change_love_values.setBackgroundResource(R.mipmap.room_gift_xin_dong_reduce);
//            viewHolder.tv_gift_change_love_values.setText(String.format("%s", giftModel.getCardiac()));
//        } else {
//            viewHolder.tv_gift_change_love_values.setBackgroundResource(R.mipmap.room_gift_xin_dong_add);
//            viewHolder.tv_gift_change_love_values.setText(String.format("+%s", giftModel.getCardiac()));
//        }
//        if (giftModel.isManghe()) {
//            viewHolder.tv_gift_change_love_values.setVisibility(View.GONE);
//        }

        return convertView;
    }


    static class ViewHolder {
        public ConstraintLayout item_layout;
        public TextView tv_gift_name, tv_gift_price, tv_gift_num;
        public ImageView iv_gift_pic;
        public TextView tv_gift_change_love_values;
        public ImageView ivDownOn;
        public ConstraintLayout cl_iv_down_on;
    }
}