更改ListView的一行的图标

Question

I am displaying some rows in my ListView and want to change only one of the row, by seeing if any of the date in the list matches today's date.

My partial code is:

DateFormat df = new SimpleDateFormat("EEEEE, LLLL d", Locale.US);
String[] suspendedDates = {
    "Tuesday, January 1",
    "Wednesday, April 16",
    "Monday, October 6",
    "Wednesday, December 25"
};

lvDisplay = (ListView) findViewById(R.id.lvDisp);

        for (int i = 0; i < suspendedDates.length; i ++) {
            sDate = suspendedDates[i];
            sReason = datesReason[i];
            if (Arrays.asList(suspendedDates).contains(df.format(Calendar.getInstance(Locale.US).getTime()))) {
                inIconShow = R.drawable.caliconpressed; //if today matches display a different drawable
                contents.add(new SetRows(inIconShow, sDate, sReason));
            }
            if (!Arrays.asList(suspendedDates).contains(df.format(Calendar.getInstance(Locale.US).getTime()))) {
                inIconShow = R.drawable.calicon; //if today doesn't match the array display the default drawable
                contents.add(new SetRows(inIconShow, sDate, sReason));
            }
        }
        // Now set your adapter.
        adapter = new SetRowsCustomAdapter(MainActivity.this, R.layout.listdates, contents);
        lvDisplay.setAdapter(adapter);

SetRowsCustomAdapter class:

import java.util.ArrayList;

import android.app.Activity;
import android.content.Context;
import android.graphics.Typeface;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;

public class SetRowsCustomAdapter extends ArrayAdapter<SetRows> {
    Context context;
   int layoutResourceId;
   ArrayList<SetRows> data=new ArrayList<SetRows>();
   public SetRowsCustomAdapter(Context context, int layoutResourceId, ArrayList<SetRows> data) {
       super(context, layoutResourceId, data);
       this.layoutResourceId = layoutResourceId;
       this.context = context;
       this.data = data;
   }

   @Override
   public View getView(int position, View convertView, ViewGroup parent) {
       View row = convertView;
       ImageHolder holder = null;

       if(row == null)
       {
           LayoutInflater inflater = ((Activity)context).getLayoutInflater();
           row = inflater.inflate(layoutResourceId, parent, false);

           holder = new ImageHolder();
           holder.txtTitle = (TextView)row.findViewById(R.id.tvDateVal);
           //holder.txtTitle.setTypeface(Typeface.createFromAsset(getContext().getAssets(), "fonts/robm.ttf"));
           holder.imgIcon = (ImageView)row.findViewById(R.id.ivIcon0);
           holder.txtID = (TextView)row.findViewById(R.id.tvReasonVal);
           //holder.txtID.setTypeface(Typeface.createFromAsset(getContext().getAssets(), "fonts/robm.ttf"));
           row.setTag(holder);
       }
       else
       {
           holder = (ImageHolder)row.getTag();
       }

       SetRows myImage = data.get(position);
       holder.txtTitle.setText(myImage.name);
       holder.txtID.setText(myImage.id);
       int outImage=myImage.image;
       holder.imgIcon.setImageResource(outImage);
      return row;

   }

   static class ImageHolder
   {
       ImageView imgIcon;
       TextView txtTitle;
       TextView txtID;
   }
}

So the 4th row should have a different icon and the other 3 should have default icon. What is happening is if the date matches, every row has the different icon, otherwise every row has the default icon.

How do I fix it?

Answer 1

if you want change the image you can do in getView method like bellow code:

@Override
   public View getView(int position, View convertView, ViewGroup parent) {
       View row = convertView;
       ImageHolder holder = null;

       if(row == null)
       {
           LayoutInflater inflater = ((Activity)context).getLayoutInflater();
           row = inflater.inflate(layoutResourceId, parent, false);

           holder = new ImageHolder();
           holder.txtTitle = (TextView)row.findViewById(R.id.tvDateVal);
           //holder.txtTitle.setTypeface(Typeface.createFromAsset(getContext().getAssets(), "fonts/robm.ttf"));
           holder.imgIcon = (ImageView)row.findViewById(R.id.ivIcon0);
           holder.txtID = (TextView)row.findViewById(R.id.tvReasonVal);
           //holder.txtID.setTypeface(Typeface.createFromAsset(getContext().getAssets(), "fonts/robm.ttf"));
           row.setTag(holder);
       }
       else
       {
           holder = (ImageHolder)row.getTag();
       }

       SetRows myImage = data.get(position);
       holder.txtTitle.setText(myImage.name);
       holder.txtID.setText(myImage.id);
       int outImage=myImage.image;
       if (data.getValue)
          holder.imgIcon.setImageResource(deferentIcon);
       else
          holder.imgIcon.setImageResource(defaultIcon);
      return row;

   }

and if you want change multi row icons you can send one list of your row and check in that, and for refresh you list use adapter.notifyDataSetChanged()

Edit

for your situation you can add on boolean value in your DS and if date equal set true otherwise set else that and in if statement check that

Answer 2

Use viewHolder in adapter then use notifyDataSetChanged() in adapter; I already used and it will help.