How to remove audio file from SDCard by getting it's position

Question 1

Just changed below piece of code and now it's working fine, but thank you all.

for (int i = 0; i < len; i++)
    if (checked.get(i)) {
          String delete = myList.get(i);
          File f = new File(MEDIA_PATH + "/"+ delete);
          if (f != null && f.exists()) {
          f.delete();
        }
     }

Question 2

Similar example I am posting hope it can help you. Whatever you are doing on check box same I am doing on delete button. If you want to do it with check box then you must maintain states of all checkboxes or atleast state of last selected checkbox. This is a custom adapter and I have override getView method. Look how I am display toast on button click in listview then you will understand. If still you are facing any problem then you can ask.

package com.example.list_view;

import java.util.ArrayList;
import java.util.List;

import android.content.Context;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

public class array_adapter extends ArrayAdapter<String> {
    Context context = null;
    ArrayList<String> file_list = null;
    public array_adapter(Context context, int textViewResourceId,
            ArrayList<String> objects) {
        super(context, textViewResourceId, objects);
        this.context = context;
        this.file_list = objects;
    }

    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {
        View row_view = convertView;

        if (row_view == null) {
            row_view = View.inflate(context, R.layout.list_layout, null);
            TextView text_view = (TextView) row_view.findViewById(R.id.textView1);
            Button button = (Button) row_view.findViewById(R.id.button1);

            button.setOnClickListener(new OnClickListener() {

                @Override
                public void onClick(View v) {
                    // POSITION YOU HAVE SO YOU CAN DO WHATEVER YOU WANT.
                    String file_name = file_list.get(position);
                    String MEDIA_PATH = new String(Environment.getExternalStorageDirectory() + "/AudioRecorder/" + file_name);
                    File file = new File(MEDIA_PATH);
                    file.delete();
                    file_list.remove(position);
                    notifyDataSetChanged()
                    // ATTACT FILE WITH CORRECT FILE PATH AND DELETE.
                    Toast.makeText(context, file_name, Toast.LENGTH_LONG).show();
                }
            });

            text_view.setText(file_list.get(position));
        }
        return row_view;
    }
}

If you are still facing any problem then you can ask.

Question 3

Basically your are not going to delete audio or any file. As you have mention in your question that you have Index or Position for each row in list view.

So, Simple is that you have to delete that path as well as that file also.

File file = new File(selectedFilePath);
boolean deleted = file.delete();

Example : Path /sdcard/My_App/sample_audio.mp3

If you have problem with checked item position then go through this

Question 4

In your "delete" handler you should do the following :

Get the positions of selected items, as you already do :

SparseBooleanArray checked = mListView.getCheckedItemPositions();
For each "checked" position :
1. Construct related file path and remove that file
2. Remove corresponding data at given position from the adapter
After adapter data array/list has been updated and size is reduced
call notifyDataSetChanged() on your adapter to update mListView