Here is source code of the Program to Demonstrate Character Picker Dialog in Android. The program is successfully compiled and run on a Windows system using Eclipse Ide. The program output is also shown below.
Main Activity

package com.example.characterpickerdialog;

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 MainActivity extends Activity {

private CharacterPickerDialog dialog = 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.button1);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dialog.show();
}
});
dialog = 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,
int position, long id) {
dismiss();
}
};
}
}