Ejemplo TimerPicker

MainActivity.java

package tech.alvarez.ejemplopickers;

import android.app.DatePickerDialog;
import android.app.Dialog;
import android.app.TimePickerDialog;
import android.support.annotation.NonNull;
import android.support.v4.app.DialogFragment;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.format.DateFormat;
import android.view.View;
import android.widget.DatePicker;
import android.widget.TimePicker;
import android.widget.Toast;

import java.util.Calendar;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    public void seleccionarHora(View view) {
        TimerPickerFragment timerPickerFragment = new TimerPickerFragment();
        timerPickerFragment.show(getSupportFragmentManager(), "timePicker");
    }

    public void seleccionarFecha(View view) {
        DatePickerFragment datePickerFragment = new DatePickerFragment();
        datePickerFragment.show(getSupportFragmentManager(), "datePicker");
    }

    public static class TimerPickerFragment extends DialogFragment implements TimePickerDialog.OnTimeSetListener {

        @NonNull
        @Override
        public Dialog onCreateDialog(Bundle savedInstanceState) {
            Calendar fechaActual = Calendar.getInstance();
            int hora = fechaActual.get(Calendar.HOUR_OF_DAY);
            int minuto  = fechaActual.get(Calendar.MINUTE);

            return new TimePickerDialog(getActivity(), this, hora, minuto, DateFormat.is24HourFormat(getActivity()));
        }

        @Override
        public void onTimeSet(TimePicker timePicker, int i, int i1) {
            Toast.makeText(getActivity(), "Selecciono " + i + ":" + i1, Toast.LENGTH_LONG).show();
        }
    }

    public static class DatePickerFragment extends DialogFragment implements DatePickerDialog.OnDateSetListener {

        @NonNull
        @Override
        public Dialog onCreateDialog(Bundle savedInstanceState) {
            Calendar fechaActual = Calendar.getInstance();
            
            int anio = fechaActual.get(Calendar.YEAR);
            int mes = fechaActual.get(Calendar.MONTH);
            int dia = fechaActual.get(Calendar.DAY_OF_MONTH);
            
            return new DatePickerDialog(getActivity(), this, anio, mes, dia);
        }

        @Override
        public void onDateSet(DatePicker datePicker, int anio, int mes, int dia) {
            Toast.makeText(getActivity(), "Selecciono: " + dia + "/" + mes + "/" + anio, Toast.LENGTH_SHORT).show();
        }
    }



}