Add String to adapter

Question

I have an adapter and i want to add a string to it but when i run this code it only add the last string in the songstoadd variable ... That is a custom adapter which adds dividers in where neccessary but in the Array Adapter i want to a all of the strings that have the same first letter in their name ....

SeparatedListAdapter adapter = new SeparatedListAdapter(this);
     ArrayList<String> songstoadd = new ArrayList<String>();

              Collections.sort(songtitle);
              int m = 0;
              while( m <songtitle.size()-1){
                  if(songtitle.get(m).substring(0, 1) == songtitle.get(m+1).substring(0, 1)){
                      m++;
                  }else{
                   songstoadd.clear();
                   songstoadd.add(songtitle.get(m));

                adapter.addSection(songtitle.get(m).substring(0, 1), new ArrayAdapter<String>(getApplicationContext(),R.layout.song, songstoadd));

              m++;
                  }



      }
              setListAdapter(adapter);

        }

i think you need to convert Arraylist to String[] array

Nikunj Patel
– Nikunj Patel

2011-11-22 09:28:49 +00:00
Commented Nov 22, 2011 at 9:28 — Nikunj Patel
– Nikunj Patel, Commented Nov 22, 2011 at 9:28
Look at my edited answer. visit the links..

user370305
– user370305

2011-11-22 17:46:16 +00:00
Commented Nov 22, 2011 at 17:46 — user370305
– user370305, Commented Nov 22, 2011 at 17:46

Community · Accepted Answer · 2017-05-23 12:03:36Z

1

Try this, And let me know what happen..

songstoadd.clear();
 while( m <songtitle.size()-1){
                  if(songtitle.get(m).substring(0, 1).equals( songtitle.get(m+1).substring(0, 1))){
                      m++;
                  }else{

                songstoadd.add(songtitle.get(m));
                adapter.addSection(songtitle.get(m).substring(0, 1), new ArrayAdapter<String>(getApplicationContext(),R.layout.song, songstoadd));

              m++;
                  }

For more info look at

Android: how to use SectionIndexer

Using AlphabetIndexer for fastscrolling ListView

Create easy alphabetical scrolling in ListView?

edited May 23, 2017 at 12:03

CommunityBot

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answered Nov 22, 2011 at 9:40

user370305

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1 Comment

Waggoner_Keith Over a year ago

It still adds every single song title to every section

Sush · Accepted Answer · 2011-11-22 09:43:33Z

0

Try changing your while as below and try..

while(m <songtitle.size()-1){
     if(songtitle.get(m).substring(0, 1) == songtitle.get(m+1).substring(0, 1)){
         songstoadd.add(songtitle.get(m));
         m++;
     }else{

         songstoadd.add(songtitle.get(m));

         adapter.addSection(songtitle.get(m).substring(0, 1), new ArrayAdapter<String>(getApplicationContext(),R.layout.song, songstoadd));

         songstoadd.clear();

         m++;
    }
}

answered Nov 22, 2011 at 9:43

Sush

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1 Comment

Waggoner_Keith Over a year ago

THis only adds the Section Header and not anything from the songtitle array

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