Java – How to color a specific part of a string

How to color a specific part of a string… here is a solution to the problem.

How to color a specific part of a string

I have the following CustomAdapter:

package com.test.testing;

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Locale;

import android.app.Activity;
import android.content.Context;
import android.graphics.Color;
import android.graphics.Typeface;
import android.text.Spannable;
import android.text.SpannableString;
import android.text.style.ForegroundColorSpan;
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>();
   DateFormat df = new SimpleDateFormat("EEEEE, LLLL d", Locale.US);
   String[] suspendedDates = {
            "Monday, January 20",
            "Friday, January 31",
    };
   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.txtDate = (TextView)row.findViewById(R.id.tvDateNum);
           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);
       int inReason = myImage.name.indexOf(","); myImage.name is the same string as suspendedDates[];
        String strR = myImage.name.substring(0, inReason);
        Spannable WordToSpan = new SpannableString(strR);
        WordToSpan.setSpan(new ForegroundColorSpan(Color.parseColor("#4787ED")), 0, WordToSpan.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
        String strRNext = myImage.name.substring(inReason, myImage.name.length());
        Spannable WordToSpan1 = new SpannableString(strRNext);
    WordToSpan1.setSpan(new ForegroundColorSpan(R.color.dateholiday), 0, WordToSpan1.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
        String strConcat = WordToSpan.toString() + WordToSpan1.toString();

holder.txtTitle.setText(strConcat);//myImage.name);
       holder.txtID.setText(myImage.id);
       holder.txtDate.setText(myImage.date);
       int outImage=myImage.image;
       /*if (myImage.name.contains(df.format(Calendar.getInstance(Locale.US).getTime()))) {
           holder.imgIcon.setImageResource(R.drawable.caliconpressed);
       }
       else {
           holder.imgIcon.setImageResource(R.drawable.calicon);
       }*/
      return row;

}

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

I’m using Spannable to set the individual color of the string. It should produce something like this:
enter image description here

But it still shows:

enter image description here

Does anyone know how to edit the adapter to achieve what I want to do?

Solution

Do not convert your Spannable to strings. (i.e. don’t do this: WordToSpan.toString()).

Instead, set the Spannable directly into your bracket as follows:

holder.txtTitle.setText(WordToSpan + WordToSpan1);

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