CharacterPickerDialog in Android.

You can create custom character Picker, same way we can make custom keyboard using this concept. 

import android.app.Activity;

import android.os.Bundle;

import android.text.method.CharacterPickerDialog;

import android.view.View;

import android.widget.AdapterView;

import android.widget.Button;

import android.widget.Toast;

public class CharacterPickerDialogActivity extends Activity

{    

      private CharacterPickerDialog cpd = null;

      String options="0123456789ABCDEFGHIJ";

     

      @Override

      public void onCreate(Bundle savedInstanceState)

      {

            super.onCreate(savedInstanceState);

            setContentView(R.layout.activity_main);

            Button button = (Button) this.findViewById(R.id.Button01);

            button.setOnClickListener(new View.OnClickListener()

            {

                  @Override

                  public void onClick(View v)

                  {

                        cpd.show();

                  }

            });          

            cpd= new CharacterPickerDialog(this, new View(this),     null,options,false)

            {

                  public void onClick(View v)

                  {

                   Toast.makeText(getApplicationContext(),"onClick! " +  ((Button) v).getText().toString(),

                        Toast.LENGTH_SHORT).show();

                        dismiss();

                  }

                  public void onItemClick(AdapterView parent, View view, intposition, long id)

                  {

                    String message = ("onItemClick! " + ((Button)       view).getText().toString())

                        + " position=" + position + " id=" + id;

                       

                        Toast.makeText(getApplicationContext(), message, Toast.LENGTH_SHORT).show();

                        dismiss();

                  }

            };

      }

}