Mohan, I have done this before, where i am reading all the music files in
SDCard and able to show it in Listview with checkbox.
Please follow the below points which will help you in resolving.
1. Create a class which extends the ArrayAdapter
2.In the getView method of the Adapterclass have the following.
// The child views in each row.
CheckBox checkBox;
TextView textView;
// Create a new row view
if (convertView == null) {
convertView = inflater.inflate(R.layout.simplerow, null);
// Find the child views.
textView = (TextView) convertView
.findViewById(R.id.rowTextView);
textView.setTextColor(Color.BLACK);
checkBox = (CheckBox) convertView.findViewById(R.id.CheckBox01);
convertView.setTag(new MusicViewHolder(textView, checkBox));
checkBox.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
CheckBox cb = (CheckBox) v;
Music music = (Music) cb.getTag();
music.setChecked(cb.isChecked());
}
});
}
in onCreate bind the Adapter with your list.
listAdapter = new MusicArrayAdapter(this, musicList);
mainListView.setAdapter(listAdapter);
Warm Regards,
*Mukesh Kumar*,
Android Consultant/Freelancer,
India,Hyderabad
On Tue, Jan 10, 2012 at 11:09 AM, chander <[email protected]> wrote:
> hi all,
>
> I am creating an application in which i used a List view to list all
> files present in SD card, but for some purpose i need to make ListView
> checkable or selectable by user.
> i created my own Array adapter of Files, i tried getChoiceMode
> property as Multiselection but its not working. can someone help me in
> correcting my code if there is any missing thing.
>
> ListView listFiles;
> FileAdapter adapter;
> File[] files; // Full path to the files
> File file; // Current file
> public void onCreate(Bundle savedInstanceState)
> {
> super.onCreate(savedInstanceState);
> setContentView(R.layout.filelist);
>
> Home = this.getFilesDir();
>
> // Finding Buttons for listing files
>
> btnBack = (Button)findViewById(R.id.btnBack);
> btnBack.setOnClickListener(this);
>
> btnSDCard = (Button)findViewById(R.id.btnSDCard);
> btnSDCard.setOnClickListener(this);
>
> btnHome = (Button)findViewById(R.id.btnHome);
> btnHome.setOnClickListener(this);
>
> btnRoot = (Button)findViewById(R.id.btnRoot);
> btnRoot.setOnClickListener(this);
>
> listFiles = (ListView)findViewById(R.id.listFiles);
> listFiles.setOnItemClickListener(this);
>
> listFiles.setAdapter(new
>
> ArrayAdapter<File>(this,android.R.layout.simple_list_item_multiple_choice,files));
> adapter = new FileAdapter(this,files);
> listFiles.setAdapter(adapter);
> listFiles.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
> }
>
>
> When i am running this code its giving Null Pointer exception,can
> someone help me how i rectify or correct this problem.
>
>
> Thanks
>
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