git.gumartinm.name Git - JavaForFun/blob

   1 package com.weather.information.fragment.overview;
   2
   3 import android.content.Context;
   4 import android.view.LayoutInflater;
   5 import android.view.View;
   6 import android.view.ViewGroup;
   7 import android.widget.ArrayAdapter;
   8 import android.widget.ImageView;
   9 import android.widget.TextView;
  10
  11 import com.weather.information.R;
  12
  13 public class OverviewAdapter extends ArrayAdapter<OverviewEntry> {
  14     private final int resource;
  15
  16     public OverviewAdapter(final Context context, final int resource) {
  17         super(context, 0);
  18
  19         this.resource = resource;
  20     }
  21
  22     @Override
  23     public View getView(final int position, final View convertView,
  24             final ViewGroup parent) {
  25
  26         // We need to get the best view (re-used if possible) and then
  27         // retrieve its corresponding ViewHolder, which optimizes lookup
  28         // efficiency
  29         final View view = this.getWorkingView(convertView);
  30         final ViewHolder viewHolder = this.getViewHolder(view);
  31         final OverviewEntry entry = this.getItem(position);
  32
  33
  34         // Setting date
  35         viewHolder.dateNameView.setText(entry.getDateName());
  36         viewHolder.dateNumberView.setText(entry.getDateNumber());
  37
  38         // Setting temperature max/min
  39         viewHolder.temperatureMaxView.setText(entry.getMaxTemp());
  40         viewHolder.temperatureMinView.setText(entry.getMinTemp());
  41
  42         // Set image view
  43         viewHolder.pictureView.setImageBitmap(entry.getPicture());
  44
  45
  46         return view;
  47     }
  48
  49     private View getWorkingView(final View convertView) {
  50         // The workingView is basically just the convertView re-used if possible
  51         // or inflated new if not possible
  52         View workingView = null;
  53
  54         if(null == convertView) {
  55             final Context context = this.getContext();
  56             final LayoutInflater inflater = (LayoutInflater)context.getSystemService
  57                     (Context.LAYOUT_INFLATER_SERVICE);
  58
  59             workingView = inflater.inflate(this.resource, null);
  60         } else {
  61             workingView = convertView;
  62         }
  63
  64         return workingView;
  65     }
  66
  67     private ViewHolder getViewHolder(final View workingView) {
  68         // The viewHolder allows us to avoid re-looking up view references
  69         // Since views are recycled, these references will never change
  70         final Object tag = workingView.getTag();
  71         ViewHolder viewHolder = null;
  72
  73
  74         if((null == tag) || !(tag instanceof ViewHolder)) {
  75             viewHolder = new ViewHolder();
  76
  77             viewHolder.dateNameView = (TextView) workingView
  78                     .findViewById(R.id.weather_main_entry_date_name);
  79             viewHolder.dateNumberView = (TextView) workingView
  80                     .findViewById(R.id.weather_main_entry_date_number);
  81             viewHolder.temperatureMaxView = (TextView) workingView
  82                     .findViewById(R.id.weather_main_entry_temperature_max);
  83             viewHolder.temperatureMinView = (TextView) workingView
  84                     .findViewById(R.id.weather_main_entry_temperature_min);
  85             viewHolder.pictureView = (ImageView) workingView
  86                     .findViewById(R.id.weather_main_entry_image);
  87
  88             workingView.setTag(viewHolder);
  89
  90         } else {
  91             viewHolder = (ViewHolder) tag;
  92         }
  93
  94         return viewHolder;
  95     }
  96
  97     /**
  98      * ViewHolder allows us to avoid re-looking up view references
  99      * Since views are recycled, these references will never change
 100      */
 101     private static class ViewHolder {
 102         public TextView dateNameView;
 103         public TextView dateNumberView;
 104         public TextView temperatureMaxView;
 105         public TextView temperatureMinView;
 106         public ImageView pictureView;
 107     }
 108
 109 }