git.gumartinm.name Git - JavaForFun/blob

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