content: package com.antest1.kcanotify;
  
  import android.content.Context;
  
  import androidx.core.content.ContextCompat;
  import android.view.LayoutInflater;
  import android.view.View;
  import android.view.ViewGroup;
  import android.widget.BaseAdapter;
  import android.widget.ImageView;
  
  import java.util.ArrayList;
  import java.util.List;
  
  public class KcaItemAdapter extends BaseAdapter {
      public static final int IMAGE_SIZE = 128;
      Context context;
      int layout;
      int rescale = -1;
      List<String> item = new ArrayList<>();
      LayoutInflater inf;
      private int prevactive = -1;
  
      public KcaItemAdapter(Context context, int layout, List<String> data) {
          this.context = context;
          this.layout = layout;
          this.item = data;
          inf = (LayoutInflater) context.getSystemService
                  (Context.LAYOUT_INFLATER_SERVICE);
      }
  
      public void setPrevActive(int v) {
          prevactive = v;
      }
  
      @Override
      public int getCount() {
          return item.size();
      }
  
      @Override
      public Object getItem(int position) {
          return item.get(position);
      }
  
      @Override
      public long getItemId(int position) {
          return position;
      }
  
      public void setRescaleDp(int value) {
          rescale = value;
      }
  
      @Override
      public View getView(int position, View convertView, ViewGroup parent) {
          if (convertView==null)
              convertView = inf.inflate(layout, null);
          ImageView iv = (ImageView) convertView.findViewById(R.id.setting_image_pic);
          KcaUtils.setFairyImageFromStorage(context, item.get(position), iv, IMAGE_SIZE);
          if (position == prevactive) iv.setBackground(ContextCompat.getDrawable(context, R.drawable.imagebtn_on));
          else iv.setBackground(ContextCompat.getDrawable(context, R.drawable.imagebtn_off));
          if (rescale > 0) {
              iv.getLayoutParams().width = rescale;
              iv.getLayoutParams().height = rescale;
          }
          return convertView;
      }
  }